1Z0-045 exam Dumps Source : Oracle Database 10g: recent Features for Oracle8i OCPs
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leading golf gadget manufacturer turns over key records administration projects to Oracle, boosting performance and scalability
REDWOOD SHORES, Calif., Feb. eleven, 2019 /PRNewswire/ -- TaylorMade Golf, in its quest for growth after divesting from Adidas, is popping to Oracle autonomous Database to underpin its cloud modernization approach and power innovation. A key benefit of the brand recent Oracle Database is that it automates the everyday database operations and tuning, liberating TaylorMade to focal point on making the area's ultimate golf device.
Oracle logo (PRNewsfoto/Oracle)more
When TaylorMade separated from Adidas, the company needed to build out a platform within the cloud and selected Oracle self sufficient Database for its unheard of availability, performance, and security. The business's first and simplest independent database, Oracle self sufficient data Warehouse provides TaylorMade with the capability to scale as mandatory for planned industry initiatives, above total around seasonal workloads, in a simple and cost-efficient manner. It moreover works with TaylorMade's present industry analytic tools to coerce sooner analysis to impulsively alter income concepts as needed. The database moreover offers TaylorMade the tools they should pinpoint alternatives for industry diversification.
"As their enterprise needs endured to adapt, they required a greater effectual solution to seamlessly control and scale their information management system," stated Tom Collard, vice chairman of IT, TaylorMade. "With Oracle self sufficient data Warehouse, they now believe a scalable, reasonable cloud platform to vigor their enterprise. this will befriend preserve boom and unlock useful employee time so one can focal point on extra mission-important initiatives."
Taking handicap of Oracle self sustaining statistics Warehouse's self-driving, self-securing, and self-repairing capabilities, TaylorMade will exist certain its censorious infrastructure is running successfully with efficiency it really is 40x faster than its primitive on-premise database solution. this will permit its IT group of workers to focus on actions that pressure growth and stronger meet consumer calls for while keeping expenses low.
"TaylorMade has a tradition of constructing the ultimate golf materiel for authorities and patrons," illustrious Andrew Mendelsohn, govt vp of Database Server applied sciences, Oracle. "With Oracle self sustaining Database, Oracle handles total of the database operations and tuning so TaylorMade's IT carcass of workers can consign greater time to deriving industry value from their statistics."
About TaylorMade Golf business
Headquartered in Carlsbad, California, TaylorMade Golf is a number one manufacturer of tall performance golf device with trade-leading innovative items enjoy M5/M6 metalwoods, M5/M6 irons and TP5/TP5X golf balls. TaylorMade is the #1 Driver in Golf and moreover an incredible drive on the PGA TOUR with some of the strongest athlete portfolios in golf, that includes Dustin Johnson, Rory McIlroy, Jason Day, Jon Rahm and Tiger Woods.
About OracleThe Oracle Cloud offers an entire suite of integrated applications for income, provider, advertising, Human resources, Finance, supply Chain and Manufacturing, plus incredibly-automated and comfortable era 2 Infrastructure featuring the Oracle independent Database. For greater guidance about Oracle (ORCL), gladden talk over with us at oracle.com.
TrademarksOracle and Java are registered emblems of Oracle and/or its affiliates. other names may well exist logos of their respective house owners.
Redwood Shores, Calif.—Feb 14, 2019
KT Corp has selected Oracle Communications for the 5G coverage manipulate feature (PCF) within the buildout of its 5G community and to allow recent network as a provider (NaaS) offerings for corporations. An early adopter of 5G, KT Corp is generic for innovation and selected Oracle for its middling 5G readiness, product maturity and competitive strengths, including its agile and feature-rich 5G PCF answer.
“building on their longstanding relationship with Oracle Communications, we're satisfied to continue working together as they capture expertise of total that 5G has to offer,” observed Gwangwook Lee, VP Core network strategy & Planning department., KT Corp. “In trials, the Oracle 5G PCF respond performed past expectations and met their discerning metrics for using the success of their upcoming 5G deployment. After six years of successful partnership with Oracle within the 4G realm, they appear to exist ahead to carrying on with the partnership with Oracle in the 5G domain and as they meander to bring new, imaginitive offerings to their clients.”
The 5G PCF is the policy management characteristic of the 5G manipulate airplane, and some of the 5G Core network points supplying satisfactory of carrier and different community guidelines to communications service suppliers’ (CSPs) networks. Leveraging Oracle’s 5G Core community, KT Corp might exist capable of proceed its network transformation towards 5G, and will unencumber recent doorways for differentiated and customized consumer choices, assisting incremental 5G network monetization with enhanced service agility, improved bandwidth and extra customized functions.
With the introduction of 5G, CSPs enjoy KT Corp are able to launch and evolve customized-healthy community slices faster than ever. network slicing is a totally dynamic process that gives CSPs with the haphazard to tailor connectivity services to the precise requirements of any given software; person, device or context, by means of logically setting apart virtualized network substances. This skill will permit CSPs to launch NaaS solutions tailored to the certain wants of their industry valued clientele that may latitude from AR and VR to connected vehicles, smart Factories, and smart Cities.
“by means of supplying an respond that addresses 5G policy requirements and underpins KT Corp’s main 5G transformation,” observed Andy Hicks, major Analyst at GlobalData, “Oracle is staking a declare to leadership within the 5G core.”
“As they lengthen their partnership with visionary, KT Corp past their collective 4G success, Oracle is unlocking doors to recent innovations in this subsequent generation of connectivity spanning from commercial enterprise functions to sensible ecosystems,” pointed out Doug Suriano, senior vice president and well-liked manager, Oracle Communications.Contact data About Oracle Communications
Oracle Communications provides integrated communications and cloud options for provider suppliers and corporations to accelerate their digital transformation journey in a communications-driven world from community evolution to digital industry to customer journey. www.oracle.com/communications
To gain learning of extra about Oracle Communications trade solutions, quest recommendation from: Oracle Communications LinkedIn, or exist fragment of the dialog at Twitter @OracleComms.About Oracle
The Oracle Cloud presents an entire suite of built-in applications for income, service, advertising, Human resources, Finance, deliver Chain and Manufacturing, plus extremely-computerized and comfy technology 2 Infrastructure that includes the Oracle self sustaining Database. For extra counsel about Oracle (NYSE: ORCL), gladden argue with us at www.oracle.com.trademarks
Oracle and Java are registered logos of Oracle and/or its associates. different names can exist emblems of their respective house owners.
Oracle is including recent aspects to the Oracle Blockchain Platform, making it less demanding for developers to integrate their blockchain applications with present industry and IT systems. About seven months after the platform became generally obtainable, Oracle is moreover highlighting recent consumers the expend of the nascent expertise.
also: Oracle introduces recent industry digital assistant
A blockchain, the expertise behind the cryptocurrency Bitcoin, is a shared, disbursed ledger that may store complete transaction histories. It has a number of expend cases for enterprises that want to signify on tamper-proof transactions to create recent salary streams or enhance enterprise operations. Oracle's platform makes blockchain expertise obtainable as a service.
one of the vital platform's recent points are aimed at letting corporations and builders expend their current expertise to construct and manage their applications. for instance, it elements an more advantageous world situation database to aid generic SQL-primarily based ledger queries. This lets developers construct chaincode with typical programming advantage. The platform additionally now supports Hyperledger cloth 1.three, including aspects such as chaincode construction in Java.ought to examine
in the meantime, the brand recent prosperous inheritance database shadows transaction background perquisite into a relational database schema in Oracle's self reliant information Warehouse or different Oracle databases. This lets corporations integrate their transaction background into interactive analytics dashboards. additionally, enhanced leisure APIs should soundless simplify integration with current IT equipment.
The up to date platform additionally lets businesses expend exterior id suppliers for authentication. The feature should soundless aid consortium blockchains with many distinctive contributors, total of which may well exist using diverse identity management methods. businesses can additionally now expend third-party certificates to register client companies on the blockchain community.
amongst Oracle's lately-delivered blockchain customers are China Distance education Holdings limited, which uses blockchain to share educational facts and skilled certifications throughout assorted academic associations. This helps employers and recruiters examine people' claimed academic credentials. in the meantime, the industry Circulor uses blockchain to music fight minerals from their starting situation at mines to processing and expend in electronic accessories. different Oracle blockchain shoppers embrace Arab Jordan funding pecuniary institution, CargoSmart, certified Origins, HealthSync and ICS monetary techniques.related reports:
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Mark Rittman is a SearchOracle.com guest contributor. He is an OCP DBA and works as a consulting manager at Plus Consultancy in England, where he specializes in developing industry intelligence and data warehousing applications using the Oracle Database, Application Server, Discoverer, Warehouse Builder and Oracle OLAP.
You can find more of Mark's labor at www.rittman.net/.
Plus Consultancy's stamp Rittman shares what he believes are the top 10 recent data warehousing features in Oracle Database 10g. expend the following list to navigate to each feature.
TABLE OF CONTENTS 1. The SQL Model Clause 2. The SQLAccess Adviser 3. Improvements to the Multidimensional OLAP Engine 4. The Tune MView Advisor and improvements to Query Rewrite 5. Data Pump, The replacement for import and export 6. Improvements to storage management 7. Faster full table scans 8. Automatic tuning and maintenance 9. Asynchronous Change Data Capture 10. Improvements to Oracle data mining
1. The SQL Model clause[ return to Table of Contents ]
The recent data warehousing feature in Oracle Database 10g that has probably received the most attention is the SQL Model clause. The SQL Model clause allows users to embed spreadsheet-like models in a SELECT statement, in a pass that was previously the domain of dedicated multidimensional OLAP servers such as Oracle Express and Oracle9i OLAP. The SQL Model clause brings an entirely recent dimension to Oracle analytical queries and addresses a number of traditional shortcomings with the pass SQL normally works.
The SQL Model clause has been designed to address the sort of situation where, in the past, clients believe taken data out of relational databases and imported it into a model held in a spreadsheet such as Microsoft Excel. Often, these models involve a progression of macros that aggregate data over a number of industry dimensions, over varying time periods, and following a set of involved industry rules that would exist difficult to express as commonplace SQL. I've worked on many a client rendezvous where the limitations of SQL meant that a number of standalone surpass spreadsheets had to exist used, and while these gave the client the analytical capabilities they required, the habitual issues of scalability and reliability of replicated data, and want of overall control often became patent after a while.
The train of the SQL Model clause is to give commonplace SQL statements the competence to create a multidimensional array from the results of a commonplace SELECT statement, carry out any number of interdependent inter-row and inter-array calculations on this array, and then update the basis tables with the results of the model. An specimen SQL statement using the MODEL clause would notice like;SELECT SUBSTR(country,1,20) country, SUBSTR(prod,1,15) prod, year, sales FROM sales_view WHERE country IN ('Italy','Japan') MODEL return UPDATED ROWS PARTITION BY (country) DIMENSION BY (prod, year) MEASURES (sale sales) RULES ( sales['Bounce', 2002] = sales['Bounce', 2001] + sales['Bounce', 2000], sales['Y Box', 2002] = sales['Y Box', 2001], sales['2_Products', 2002] = sales['Bounce', 2002] + sales['Y Box', 2002]) ORDER BY country, prod, year;
More details on the SQL Model clause can exist organize in "The recent Oracle10g SQL Model Clause", the OracleWorld white paper "SQL Model clause of Oracle Database 10g", the OTN article "Announcing the recent Model" by Jonathan Gennick and OTN's documentation.
2. The SQLAccess Adviser[ return to Table of Contents ]
Part of the Oracle Database 10g Server Manageability feature, the SQLAccess Adviser recommends the best combination of indexes and materialized views for a given database workload. Available either at the command line (via the DBMS_ADVISOR package) or through the Advisor Central element of the recent Web-based Oracle Enterprise Manager, the SQLAccess Adviser is based on the index and summary advisors previously bundled with Oracle9i and provides a one-stop-shop for tuning and summarizing your warehouse data.
More details on the SQLAccess Adviser can exist organize in this OracleWorld white paper, ""Turbocharge your database: expend the Oracle Database 10g SQLAccess Advisor" by Lillian Hobbs, the OTN documentation and this Oracle-by-example tutorial.
3. Improvements to the multidimensional OLAP engine[ return to Table of Contents ]
With Oracle9i, the previously standalone Express multidimensional engine is now incorporated into the Oracle database, and with Oracle Database 10g, benefits of integration with the traditional relational Oracle engine are starting to become apparent.
First up is improvements to the pass large analytic workspaces can exist partitioned, introducing into the Oracle OLAP world some of the advanced partitioning options currently enjoyed by Oracle database users. Currently, analytic workspaces, stored as AW$ tables within an Oracle schema, can exist partitioned across multiple rows in the AW$ table by specifying a maximum segment size, allowing you to split an individual analytic workspace into (say) 10 GB segments, one in each table row. This table could then exist partitioned just enjoy any other Oracle table, allowing you to build one row in one tablespace, another in another, and each of these tablespaces could of course exist stored in datafiles on different physical disk units. Although this was of some benefit, splitting by segment size was the only pass of partitioning the data, and you couldn't specify what objects within the analytic workspace went in to each partition. Oracle10g OLAP will now embrace an enhancement where you can specify exactly which objects within the analytic workspace travel in to each partition, and you can further subdivide this by segment size if objects are particularly large.
In a similar fashion, variables within the analytic workspace can now exist partitioned, either by orbit of dimension members, a list of dimension members, or by reference to a CONCAT dimension. The 10g multidimensional engine then stores each variable partition as a part physical object, which can exist directed to part rows in the AW$ table (allowing you to partition these across different tablespaces and physical disk drives); the variable, however, appears as just one protest to the application, simplifying the data model and allowing Oracle to enact total the difficult labor in the background.
Another excellent recent feature, and a actual improvement over what was available with Express, is uphold for multi-user read-write access to individual analytic workspaces. In the past, one drawback with Express was that only one user could attach to an Express database in read-write mode, leading Express developers to develop a all orbit of alternative solutions to allow ad-hoc write access to Express databases. In Oracle 10g OLAP, analytic workspaces can exist attached in MULTI mode, whereafter applications then ACQUIRE individual variables in the analytic workspace for read-write access. Once an protest has been acquired (and locked by the Oracle multidimensional engine), updates can then capture situation and the application can acquire whatever modifications are necessary. After total changes believe been made, the UPDATE command is issued against the variable, followed by a COMMIT, and then a RELEASE command is issued against the variable to acquire it available for other applications to write to. It'll exist lamentable to survey how the multidimensional engine handles multi-write access; in the past with Express databases could balloon in size when one user had read-write access to a database, and others were accessing it in read mode, as Express had to clone the database for each user to ensure that they had a consistent view of the data. I wouldn't exist surprised if individual variables were copied out of a 10g analytic workspace into a temporary workspace while updates happened, with updates being propagated back (as with the primitive Express surpass Add-In) when the changes are finally COMMITted -- the key thing here is how database size is dealt with as the primitive Express pass of doing it was less than optimal.
Aggregation has been improved with Oracle10g OLAP, with formulas now allowed as sources of data for the AGGREGATE command, eliminating the necessity to cipher and store data at the detail level. Aggregation, particularly dynamic aggregation, is another area where Oracle9i and now 10g OLAP are a several improvement over Express and it's well worth looking at this area in more detail if this is an issue with an existing Express system.
More details on Oracle10g OLAP's recent features can exist organize in the OLAP Application Developer's Guide, the OLAP DML Reference and a white paper by Bud Endress, "OLAP Option to the Oracle10g Database."
4. The Tune MView Advisor and improvements to Query Rewrite[ return to Table of Contents ]
Query Rewrite (the competence for Oracle to transparently redirect queries from detail level to summary tables) is one of the best data warehousing features in Oracle8i and 9i, but it's sometimes a bit temperamental and you can often find that queries don't actually Get rewritten. Sometimes this is because you've broken one of the Query Rewrite restrictions, sometimes it's because your materialized view doesn't contain the amend columns and aggregates. Oracle 10g has a number of improvements to Query Rewrite and the materialized view tuning process that should acquire this process a bit more productive. With Oracle Database 10g, query rewrite is now feasible when your SELECT statement contains analytic functions, full outer joins and set operations such as UNION, MINUS and INTERSECT. In addition, you can now expend a hint, /*+ REWRITE_OR_ERROR */, which will cease the execution of a SQL statement if query rewrite cannot occur.SQL> SELECT /*+ REWRITE_OR_ERROR */ 2 s.prod_id, 3 sum(s.quantity_sold) 4 FROM sales s 5 GROUP BY s.prod_id; FROM sales s * mistake at line 4: ORA-30393: a query obstruct in the statement did not rewrite
Oracle9i came with two packages, DBMS_MVIEW.EXPLAIN_MVIEW and DBMS_MVIEW.EXPLAIN_REWRITE that could exist used to diagnose why a materialized view wasn't being used for query rewrite. However, although these packages told you why rewrite hadn't happened, they left it down to you to labor out how to alter your CREATE MATERIALIZED VIEW statement to ensure that rewrite happened correctly. Oracle Database 10g comes with a recent advisor package, DBMS_ADVISOR.TUNE_MVIEW, that takes as its input a CREATE MATERIALIZED VIEW DML statement, and outputs a corrected version that supports query rewrite and features such as speedily refresh.
More details on Query Rewrite improvements and the Tune MView Adviser can exist organize in the TUNE_MVIEW online documentation, the Query Rewrite online documents and this Oracle Database 10g Oracle-by-Example tutorial.
5. Data Pump: The replacement for import and export[ return to Table of Contents ]
Data Pump is a replacement for the venerable IMP and EXP applications used for creating ratiocinative backups of Oracle tables, schemas or databases. Data Pump is a server application (as opposed to IMP and EXP, which were client applications), which in beta testing was twice as speedily as the primitive EXP for exporting data, and 10 times as speedily as the primitive IMP for importing data. Data Pump is callable either through the DBMS_DATAPUMP package, through the replacements for IMP and EXP, known as IMPDB and EXPDB, or through a wizard delivered as fragment of Oracle Enterprise Manager 10g.
Data Pump (and the recent IMPDB and EXPDB applications) offers a number of improvements over the primitive IMPORT and EXPORT, including resumable/restartable jobs, automatic two-level parallelism, a network mode that uses DBLINKs/listener service names instead of pipes, fine-grained protest selection (so you can select individual tables, view, packages, indexes and so on for import or export, not just tables or schemas as with IMPORT and EXPORT), and a fully callable API that allows Data Pump functionality to exist embedded in third-party ETL packages.
More details on Data Pump can exist organize in this OracleWorld white paper by George Claborn, "Data Pump in Oracle Database 10g: Foundation for ultra-high-speed data movement utilities,", OTN's online documentation and this Oracle-by-example tutorial.
6. Improvements to storage management[ return to Table of Contents ]
Automatic Storage Management (ASM) is one of the 'cool recent features' in Oracle10g that is meant to reduce the workload for Oracle DBAs. ASM completely automates the process of creating ratiocinative volumes, file systems and filenames, with the DBA only specifying the location of raw disks and ASM doing the rest. Disk I/O is managed by evenly distributing the data across blocks within a disk group, with ASM in addition handling disk mirroring and the creation of mirror groups and failure groups.
ASM deals with the problems caused by rapidly expanding data warehouses, where administators can no longer deal with the sheer number of disk units, nodes and ratiocinative groupings, and is a key feature of the Oracle 10g Grid Architecture, which aims to 'virtualize' computing power and present database features enjoy processing and storage as utilities that effectively manage themselves.
More details on Automatic Storage Management can exist organize in this OTN article by Lannes Morris-Murphy, this Oracle-by-example tutorial (which comes with a number of demonstration viewlets) and OTN's online documentation.
7. Faster full table scans[ return to Table of Contents ]
Full table scans are common in data warehousing environments, and with this in mind, table scan performance has been improved in Oracle10g. Code optimization in Oracle Database 10g has decreased CPU consumption and this leads to faster table scan execution (when queries are CPU bound, rather than I/O bound), and gives the potential for greater query concurrency, offering up to 30-40% precipitate improvements when comparing CPU-bound queries.
8. Automatic tuning and maintenance[ return to Table of Contents ]
Automatic maintenance and tuning has always been one of the key product differentiators for Microsoft SQL Server and with Oracle10g, features that meet and match those organize in competitor products are being introduced to the server technology stack.
Surveys present that over 50% of a DBAs time is expend tuning and monitoring the database server, a chore that while distinguished is often involved and difficult to Get exactly right. With Oracle Database 10g, Oracle has introduced a number of components that together acquire it feasible for the database server to monitor itself, acquire smart changes to configuration, and alert DBAs when situations arise that necessity manual intervention.
The first component in this framework is the Automatic Workload Repository, which uses an enhanced version of Statspack to collect instance statistics every 30 minutes and stores these for a rolling seven day period. This enhanced version of Statspack now collects a broader orbit of statistics and has a number of optimizations to streamline the pass high-cost SQL statements are captured, ensuring that only SQL activity that has significantly affected performance since the last snapshot are collected. The usage information stored in the Automatic Workload Repository is then used as the basis for total the self-management functionality in Oracle Database 10g.
Next up is the Automatic Maintenance Tasks feature, which acts on the statistics gathered by the Automatic Workload Repository, and carries out tasks such as index rebuilding, refreshing statistics and so on, where such tasks don't require any manual intervention by the DBA. A recent scheduling feature known as Unified Scheduler runs these tasks during a predefined maintenance window, set by default to exist between 10:00 pm and 6:00 am the next day, although these times can exist customized to reduce repercussion on other tasks (such as batch loads) that might exist taking place.
The third component of the self-managing framework is Server Generated Alerts, a system where the database server sends notifications via e-mail to the DBA -- including a recommendation as to how best to deal with the situation. Alerts will normally exist raised where the database itself cannot deal with the situation that has arisen, such as when there is insufficient space on a disk unit to extend a datafile.
Lastly, and perhaps the most exiting of total the self-managing component frameworks, is the Automatic Database Diagnostic Monitor. This component analyzes the data captured in the Automatic Workload Repository and uses an ersatz intelligence algorithm, similar to that organize in Oracle Expert, to anatomize areas such as lock contention, CPU bottlenecks, I/O usage and contention, issues with checkpointing and so on, in much the identical pass that a DBA would currently enact by analyzing statspack reports.
More details on the self-tuning and maintenance features in Oracle 10g can exist organize in this OracleWorld white paper, "Oracle Database 10g: The self-managing database," by Sushil Kumar.
9. Asynchronous Change Data Capture[ return to Table of Contents ]
Oracle Change Data Capture was introduced with Oracle9i, and provided the competence to track changes to tables and store them in a change table, for further consumption by an ETL process. Oracle9i Change Data Capture worked by creating triggers on the source tables, transferring data synchronously but creating a processing overhead and requiring access to the structure of the source tables. Because of the result that the triggers had on the underlying tables, many warehouse projects did without change data capture and used other methods to capture changes.
Oracle10g introduces Asynchronous Change Data Capture, which instead of using triggers uses the database log files to capture changes and apply them to collection tables. Asynchronous Change Data Capture therefore doesn't require changes to the table structure and doesn't repercussion on database performance.
More details on Asynchronous Change Data Capture can exist organize in this OTN white paper, "On-time data warehousing with Oracle 10g -- Information at the precipitate of your business," which moreover details improvements to the transportable tablespaces feature in Oracle Database 10g (tablespaces no longer necessity to exist sourced from the identical O/S platform).
10. Improvements to Oracle data mining[ return to Table of Contents ]
Alongside the inclusion of the Oracle Express multidimensional OLAP engine, Oracle9i moreover embedded data mining functionality in the database together, and this data mining functionality has been enhanced with Oracle Database 10g. Oracle Database 10g adds uphold for two recent classification routines, uphold Vector Machine (used for top-down rather than a bottom-up calculations, assuming the best feasible appropriate and then working backwards to what can exist achieved) and Non-Negative Matrix Factorisation, together with uphold for Frequent Itemsets, used for such functions as market basket analysis and propensity analysis.
More details on what's recent with Oracle10g Data Mining can exist organize in the OTN online documentation.
About the author:Mark Rittman works for Plus Consultancy, an Oracle partner specializing in industry intelligence and data warehousing solutions, based in Brighton, England. He manages their data warehousing practice and spends most time designing and building BI&W systems based on the Oracle9i platform. Away from Plus, he's moreover the chair of the UKOUG industry Intelligence & Reporting Tools SIG, working as a liason between the Oracle BI tools community and Oracle. Check out Mark's Web site at www.rittman.net.
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Change is a fact of life, and each of the major DBMS products changes quite rapidly. A typical release cycle for DBMS software is 18 to 24 months for major releases, with constant bug fixes and maintenance updates delivered between major releases. Indeed, keeping DBMS software up-to-date can exist a full-time job.
The DBA must develop an approach to upgrading DBMS software that conforms to the organization’s needs and minimizes industry disruptions due to outages and database unavailability.
You may believe noticed that I expend the terms version and release reasonably interchangeably. That is fine for a broad discussion of DBMS upgrades, but a more precise definition is warranted. For a better discussion of the differences between a version and a release, gladden mention to the sidebar.
A DBMS version upgrade can exist thought of as a special case of a recent installation. total the procedures required of a recent installation apply to an upgrade: You must map for confiscate resources, reconsider total system parameters, and ensure that total supporting software is appropriately connected. However, another staid issue must exist planned for: existing users and applications. An upgrade needs to exist planned to occasions as tiny disruption to the existing users as possible. Furthermore, any additional software that works with the DBMS (such as purchased applications, DBA tools, utilities, and so on) must exist verified to exist compatible with the recent DBMS version. Therefore, upgrading can exist a tricky and difficult task.
In a complex, heterogeneous, distributed database environment, a coherent upgrade strategy is essential. Truthfully, even organizations with only a single DBMS should approach DBMS upgrades cautiously and map accordingly. Failure to map a DBMS upgrade can result in indelicate and inefficient adoption of recent features, performance degradation of recent and existing applications, and downtime.
Upgrading to a recent DBMS release offers both rewards and risks. The following are some of the benefits of lamentable to a recent release:
However, an effectual DBMS upgrade strategy must balance the benefits against the risks of upgrading to arrive at the best timeline for migrating to a recent DBMS version or release. The risks of upgrading to a recent DBMS release embrace the following:
After weighing the benefits of upgrading against the risks of a recent DBMS release, the DBA group must create an upgrade map that works for the organization. Sometimes the determination will exist to upgrade immediately upon availability, but often there is a lag between the generic availability of a recent release and its widespread adoption.
When the risks of a recent release outweigh the benefits, some organizations may elect to skip an interim release if doing so does not repercussion a future upgrade. For example, a trustworthy number of Oracle customers migrated directly from Oracle7 to Oracle8i, skipping Oracle8. If the DBMS vendor does not allow users to bypass a version or release, it is soundless feasible to “skip” a release by waiting to implement that release until the next release is available. For example, reckon the following scenario:
Although a multiple-release upgrade takes more time, it allows customers to effectively control when and how they will migrate to recent releases of a DBMS instead of being held hostage by the DBMS vendor. When attempting a multiple-release upgrade of this type, exist positive to fully understand the features and functionality added by the DBMS vendor for each interim release. In the case of the hypothetical ABC Corporation, the DBAs would necessity to research and prepare for the recent features of not just Version 10 but moreover Version 9.
An confiscate DBMS upgrade strategy depends on many things. The following sections outline the issues that must exist factored into an effectual DBMS release upgrade strategy.Features and Complexity
Perhaps the biggest factor in determining when and how to upgrade to a recent DBMS release is the functionality supported by the recent release. Tightly coupled to functionality is the inherent complexity involved in supporting and administering recent features.
It is more difficult to detain an upgrade if application developers are clamoring for recent DBMS features. If DBMS functionality can minimize the cost and endeavor of application development, the DBA group will feel pressure to migrate swiftly to the recent release. An additional factor that will coerce rapid adoption of a recent release is when DBMS problems are fixed in the recent release (instead of through regular maintenance fixes).
Regardless of a recent release’s “bells and whistles,” certain administration and implementation details must exist addressed before upgrading. The DBA group must ensure that standards are modified to embrace the recent features, educate developers and users as to how recent features labor and should exist used, and prepare the infrastructure to uphold the recent DBMS functionality.
The types of changes required to uphold the recent functionality must exist factored into the upgrade strategy. When the DBMS vendor makes changes to internal structures, data page layouts, or address spaces, the risks of upgrading are greater. Additional testing is warranted in these situations to ensure that database utilities, DBA tools, and data extraction and movement tools soundless labor with the revised internal structures.Complexity of the DBMS Environment
The more involved your database environment is, the more difficult it will exist to upgrade to a recent DBMS release. The first complexity issue is the size of the environment. The greater the number of database servers, instances, applications, and users, the greater the complexity. Additional concerns embrace the types of applications being supported. A DBMS upgrade is easier to implement if only simple, batch-oriented applications are involved. As the complexity and availability requirements of the applications increase, the vicissitude of upgrading moreover increases.
Location of the database servers moreover affects the release upgrade strategy. Effectively planning and deploying a DBMS upgrade across multiple database servers at various locations supporting different lines of industry is difficult. It is likely that an upgrade strategy will involve periods of supporting multiple versions of the DBMS at different locations and for different applications. Supporting different versions in production should exist avoided, but that is not always possible.
Finally, the complexity of the applications that access your databases must exist considered. The more involved your applications are, the more difficult it will exist to ensure their continuing uninterrupted functionality when the DBMS is modified. Complexity issues embrace the following:
DBMS vendors believe different reputations for technical support, fixing bugs, and responding to problems, which is why customer references are so distinguished when choosing a database.
The better the reputation of the vendor, the greater the likelihood of organizations rapidly adopting a recent release. If the DBMS vendor is trustworthy at responding to problems and supporting its customers as they migrate to recent releases, those customers will more actively engage in migration activities.Support Policies of the DBMS
As recent releases are introduced, DBMS vendors will retire older releases and no longer uphold them. The length of time that the DBMS vendor will uphold an primitive release must exist factored into the DBMS release migration strategy. You should never precipitate a DBMS release in production that is no longer supported by the vendor. If problems occur, the DBMS vendor will not exist able to resolve them for you.
Sometimes a DBMS vendor will provide uphold for a retired release on a special basis and at an increased maintenance charge. If you absolutely must continue using a retired DBMS release (for industry or application issues), exist positive to investigate the DBMS vendor’s policies regarding uphold for retired releases of its software.Organization Style
Every organization displays characteristics that reveal its style when it comes to adopting recent products and technologies. Industry analysts at Gartner, Inc., believe ranked organizations into three several groups labeled types A, B, and C. A type-A enterprise is technology driven and, as such, is more likely to risk using recent and unproven technologies to try to gain a competitive advantage. A type-B organization is less willing to capture risks but will adopt recent technologies once others believe shaken out the bugs. Finally, a type-C enterprise, very conscious of cost and averse to risk, will lag behind the majority when it comes to migrating to recent technology.
Only type-A organizations should map on lamentable aggressively to recent DBMS releases immediately upon availability and only if the recent features of the release will deliver advantages to the company. Type-C enterprises should adopt a very conservative strategy to ensure that the DBMS release is stable and well tested by type-A and type-B companies first. Type-B organizations will tumble somewhere between types A and C: Almost never upgrading immediately, the type-B company will adopt the recent release after the earliest users believe shaken out the biggest problems, but well before type-C enterprises.DBA Staff Skill Set
Upgrading the DBMS is easier if your DBA staff is highly skilled and/or experienced. The risk of an upgrade increases as the skills of the DBA staff decrease. If your DBAs are not highly skilled, or believe never migrated a DBMS to a recent release, reckon augmenting your DBA staff with consultants for the upgrade. Deploying an integrated team of internal DBAs and consultants will ensure that your upgrade goes as smoothly as possible. Furthermore, the DBA staff will exist better prepared to manipulate the future upgrades alone.
If consultants will exist required, exist positive to embrace their contracting cost in the DBMS release upgrade budget. The budget should allow you to retain the consultants until total production database environments are stable.Platform Support
When a DBMS vendor unleashes a recent release of its product, not total platforms and operating systems are immediately supported. The DBMS vendor usually first supports the platforms and operating systems for which it has the most licensed customers. The order in which platforms are supported for a recent release is likely to disagree for each DBMS vendor. For example, Linux for System z is more strategic to IBM than to Oracle, so a recent DB2 release will most likely uphold Linux for System z very quickly, whereas this may not exist righteous of Oracle. The issue is even thornier for UNIX platforms because of the sheer number of UNIX variants in the marketplace. The most well-liked variants are Oracle’s Solaris, IBM’s AIX, Hewlett-Packard’s HP-UX, and Linux, the open-source version of UNIX (the Red Hat and Suse distributions are supported more frequently and rapidly than others). Most DBMS vendors will uphold these UNIX platforms quickly upon generic availability. Other less well-liked varieties of UNIX will capture longer for the DBMS vendors to support.
When planning your DBMS upgrade, exist positive to reckon the DBMS platforms you expend and try to gauge the priority of your platform to your vendor. exist positive to build some lag time into your release migration strategy to accommodate the vendor’s delivery schedule for your specific platforms.Supporting Software
Carefully reckon the repercussion of a DBMS upgrade on any supporting software. Supporting software includes purchased applications, DBA tools, reporting and analysis tools, and query tools. Each software vendor will believe a different time frame for supporting and exploiting a recent DBMS release. Review the sidebar to understand the incompatibility between uphold and exploitation of a recent DBMS release.
Some third-party implement vendors follow guidelines for supporting and exploiting recent DBMS releases. Whenever possible, anticipate your vendors to situation their policies for DBMS upgrade support. Your vendors will probably not consign to any firm date or date orbit to uphold recent versions and releases—some DBMS versions are larger and more complicated and therefore capture longer to fully exploit.Fallback Planning
Each recent DBMS version or release should near with a manual that outlines the recent features of the release and describes the fallback procedures to return to a prior release of the DBMS. exist positive to review the fallback procedures provided by the DBMS vendor in its release guide. You may necessity to return to a previous DBMS release if the upgrade contains a bug, performance problems ensue, or other problems arise during or immediately after migration. sustain in wit that fallback is not always an option for every recent DBMS release.
If fallback is possible, follow the DBMS vendor’s recommended procedures to enable it. You may necessity to detain the implementation of certain recent features for fallback to remain an option. Understand fully the limitations imposed by the DBMS vendor on fallback, and exploit recent features only when fallback is no longer an option for your organization.Migration Verification
The DBA should implement procedures—similar to those for a recent installation—to verify that the DBMS release upgrade is satisfactory. fulfill the identical steps as with a brand-new DBMS install, but moreover test a representative sampling of your in-house applications to verify that the DBMS upgrade is working correctly and performing satisfactorily.The DBMS Upgrade Strategy
In general, design your DBMS release upgrade policy according to the guidelines discussed in the preceding sections. Each specific DBMS upgrade will exist unique, but the strategies we’ve discussed will befriend you to achieve success more readily. A well-thought-out DBMS upgrade strategy will prepare you to uphold recent DBMS releases with minimum repercussion on your organization and in a style best suited to your company.
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