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there were fairly a number of releases by Oracle RDBMS starting from Oracle v2 (there turned into no Oracle v1, as they assumed no one may additionally wish to purchase a version 1), to the latest Oracle database 11g after which Oracle Database 12c. With every release of the Oracle database, there had always been an improve course that essential to live adopted by way of the clients.
there are lots of who are overconfident and blindly rush in as soon as a original unlock comes out. They are trying to download or improve even before figuring out what precisely they deserve to do. besides the fact that children, this may, many of the time, cause catastrophe, which can live lots extreme in terms of a company or commercial enterprise ambiance. during 2016, they noticed the two latest Oracle Database models:
Oracle Database 12c - industry version: As Oracle’s flagship database suite, EE is a full-featured version of Oracle RDBMS with the preference to pick up add-on features like database alternate options and administration packs with comprehensive exploration of the server components.
Oracle Database 12c - common edition 2: here's a lighter version suppositious for petite and medium dimension implementations. SE2 comes with a confined set of DB points but with entry to actual application Clusters. Oracle introduces SE2 as a starter version, with easy upward compatibility to the greater version.Upgrading to Oracle Database 12c
for people that are using older versions of Oracle databases, the improve path to Oracle Database 12c is simple. despite the fact, when you are using a version that does not assist a right away improve, you then should first improve it to a supported version and extra to Oracle Database 12c. As of late, the direct upgrade is supported from:
Oracle Database 10g
Oracle Database 11g
There are three alternatives for upgrading:
in this article, they are able to focus extra on how to utilize the Database upgrade Assistant, which is a wide-spread formula for upgrading.Database upgrade Assistant
Oracle has lately better the DBUA through ensuring alternate options for a seamless improve. The users now possess the alternative to fix any mistakes without delay from the DBUA, and moreover, it makes monitoring the improve plenty simpler and in precise-time. with the purpose to utilize DBUA, users deserve to entry the home page of Oracle Database 12c and start by using working the DBUA. The optimal practice is to rush the preupgrd.sql to recognize what can furthermore possess to repair before working the assistant.operating PREUPGRD.SQL
For operating ‘preupgrd.sql’, one first must set up original binaries into Oracle DBA home. once this is achieved, set up the environment to connect it to the database needed to live upgraded.
As a sample, they will seize the instantly conventional Oracle Database 11g settings:ORACLE_SID=ora 11g ORACLE_BASE=/decide/oracle ORACLE_HOME=/choose/oracle/product/eleven.2.0.three.0/db_1
Then access the directory through which the preupgrd.sql file is obtainable.#>cd/decide/oracle/product/126.96.36.199/dbhome_1/rdbms/admin
After this, they possess to unite the 11g database with SQL*Plus to rush preupgrd.sql#>sqlplus / as sysdba SQL>@preup grd.sql
After operating the script, they will pick up the file places, which are necessary for reference to examine and amend any considerations with the environment later.
The outcomes of this check may live located at:/choose/oracle/cfgtoollogs/ora11/preup grade/preup grade.log
The pre-improve fix-up script rush on the source database environment is:/choose/oracle/cfgtoollogs/ora11/preup grade/preup grade_fixups.sql
The submit-upgrade fix-up script rush after the upgrade is:/decide/oracle/cfgtoollogs/ora11/preup grade/postup grade_fixups.sql
as soon as reached up to this stage, you could overview these scripts to proper if anything requires additional fixes. once these fixes are finished competently, operating DBUA will become an contemptible lot easier. The blunders listed in preupgrade.log furthermore obligatory to live corrected before working DBUA.working DBUA
as soon as preupgrade.log is reviewed and corrected, subsequent you can actually delivery with Database upgrade Assistant.
go browsing to Oracle Database 12c domestic and then rush the DBUA:#> cd/opt/oracle/product/188.8.131.52/dbhome_1/bin #> ./dbua&
working this will provoke the GUI to birth instantly and pick up upgraded. There is not any should change anything else in the ambiance, that can nonetheless live the 11g installation.ORACLE_SID=ora11g ORACLE_BASE=/decide/oracle ORACLE_HOME=/choose/oracle/product/eleven.184.108.40.206/db_1
as soon as the DBUA starts, simply celebrate the steps under.Step 1
improve Oracle database > movement the current 12c database to home of 12c Oracle > select upgrade, click on next.Step 2
We requisite to identify which Oracle domestic has to live upgraded. As they now possess it set to 11g home, in this case, the DBUA will demonstrate entire databases linked to the 11g Oracle domestic. select which database has to live upgraded and click on subsequent.Step three
The effects may live akin to what they noticed at preupgrade.log. The DBUA is furthermore working the identical preupgrd.sql script and may revert with the outcomes. however, the second is made to live more smart with the capability to allow clients to select even if the issues to live fixed, left out, or revalidated.Step 4
Oracle has made a captivating exchange right here because the improve may furthermore live carried out in parallel. here's made feasible with the aid of astute Perl script referred to as catctl.pl. they can furthermore recompile objects in parallel and let the DBUA collect records, accomplish upgrades, and gain the tablespaces examine-handiest because the improve runs.Step 5
This step will allow clients to exploit the Oracle Database 12c environment. you could utilize EM specific or can register the DB with OEM 12c (Oracle enterprise supervisor). The DBUA will instantly resolve upon the vital information if OEM12c agents are already set in on the server.Step 6
clients can specify where the records information requisite to live moved and installation the snappy restoration enviornment (FRA). you could additionally configure the Oracle Managed information (OMF).Step 7
This step is designed to abet users to migrate the 11g listener to 12c. The ‘migrate’ column on the screen at this step is very essential. here is what tells you no matter if the listener is going to live migrated.Step 8
Now, users possess the alternative to create a backup of the database before the upgrade runs. that you can additionally educate the DBUA with the aid of selecting a radio button no longer to attain a backup if you are confident about your current backup practices.Step 9
we now possess reached the abstract screen, so they can point to what the DBUA plans to do. overview this display cautiously to gain certain that every dinky thing is so as before clicking the ‘conclude’ button to birth the upgrading process. once clicked, the improve will nascence and they will discern that fame on the progress display.
as soon as the improve is achieved, the cease button on the window will change to ‘improve results.’ click on on this and you'll discern the interface altering to supply the effects of the latest improve. The easiest method to assess the upgrade is to investigate ‘etc/oratab’ file. If the upgrade is properly carried out, then this oratab file can furthermore possess changed the Oracle home in sync with the 12c binary region.
i am hoping this text provided you with the easiest and most user-pleasant approach of upgrading Oracle from the outdated 11g edition to the newest Oracle Database 12c version.
The Oracle professional working towards Bundle has 2 lessons designed to pick up you as much as quicken with the necessities of Oracle SQL and Oracle Database 12c. within the first direction, you are going to pick up an introduction to Oracle SQL, SQL functions, subqueries and extra, whereas preparing for the Oracle 12c OCP 1Z0-061 examination. The 2d direction demonstrates why Oracle Database 12c is at once becoming a powerful instrument for statistics wrangling specialists, while helping prepare you for the Oracle 12c Oracle certified skilled 1Z0-062: setting up and Administration examination. The bundle is on sale for $59.
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Oracle’s 12c update to their DBA Associate exam packs a punch.
1Z0-062: Oracle Database 12c: Installation and Administration
Reviewer's SummaryThis test is harder than would generally live expected for an OCA certification. A big number of topics and towering question count gain it a challenging proposition.
Time Limit150 minutes
Number of questions 95
Counts towardOracle Database 12c Administrator Certified Associate
Exam Objectives1Z0-062 Exam Objectives
1Z0-062: Oracle Database 12c: Installation and Administration is one of two exams required to become an “Oracle Database 12c Administrator Certified Associate”. This exam is often the first or second exam taken by IT professionals just starting their career with the Oracle database. As career choices go, Oracle Database Administration has a powerful deal to recommend it. Even during the worst of the recession, I never saw a time when hiring truly stopped in my region (although it certainly slowed for some time). For the past few years, every time I check the job sites, there are original listings for Oracle DBAs. I’m not in the market for a original position, but it is always comforting to know that if I were, there are options available.
Since release 10g, the Oracle Database Administrator Certified Professional track has consisted of three exams. This includes 1Z0-062, a SQL exam (there are several that qualify), plus an ‘Admin II’ exam. Oracle University has not yet released 1Z0-063: Oracle Database 12c: Advanced Administration even to beta status, but they possess announced its existence. The complete 12c track will supervene the model of 10g and 11g with a total of three exams. That said, the 1Z0-062 exam is a far sob from its 11g predecessor. Oracle University moved a significant number of topics into it that had been present in the Admin II exam for the 11g certification. Some of the shifted topics include those for database performance as well as management of storage, system resources, and memory. Overall, the number of topics increased from 50 in 11g to 85 in 12c. That makes a 70 percent increase. The exam furthermore has the highest question count of any of the Oracle certifications that I track.
I took this exam during its beta period, so my smack will not live quite the identical as users taking the production exam. The one I took had 150 questions. Unfortunately, I attain not recall whether I had 150 or 180 minutes to complete it. I remember being under significant time pressure to complete the eventual of the questions. Regardless which of the two durations it was, the production exam offers candidates more time to complete each question, so you should smack less pressure. With a bit over 90 seconds per question, the sticking point is not going to live whether you possess enough time to thoroughly read the question and answers but whether you studied enough to live able to recognize the amend answer when you discern it.
The exam covers a huge range of topics. I possess distilled the list to the following set (visit the Exam Objectives link for the complete list):
Every topic included on this exam is one that Oracle database administrators really should know in order to live able to attain their job effectively. However, before you pick up done preparing for this exam, you might find yourself wishing that Oracle University had decided to travel back to the four-test OCP model that was used until release 9i of Oracle. That would possess allowed them to spread the administration topics among three exams rather than two.
I was not as well prepared on the day of the beta exam as I normally am for certification tests. It was a eventual minute determination involving a free voucher and the eventual week of the beta period. The smack was not a pleasant one as I renowned on my blog the day after the exam. I would adore to live able to situation with conviction that my troubles could live laid at the feet of having taken the test on Friday the 13th, but I know better. Despite everything, I passed the exam (barely). I possess to prodigy if one of the graders took compassion on me, though.
Even fully prepared, this exam would possess been harder than I expected. There is no doubt in my reason that it is more difficult than the 11g Admin I test was. When 1Z0-062 is compared to 1Z0-052, it has more topics, a larger number of advanced topics, and I believe that there was a smaller percentage of what Oracle University considers its ‘Learner Level’ questions besides.
I often classify the vicissitude of exams as OCA-level, OCP-level, or OCE-level to witness increasing degrees of difficulty. In my experience, the test developers at Oracle University seem to possess a target flat of vicissitude based on those three certification classes. The 1Z0-062 exam, however, is an OCA certification that is bordering on OCP-level difficulty. live certain to budget sufficient time to prepare thoroughly. When making a preference between being over-prepared or under-prepared, I highly recommend selecting option one. salubrious luck on the exam.About the Author Matthew Morris is an experienced DBA and developer. He holds Oracle DBA Certifications for releases 7, 8i, 9i, 10G and 11G; is an Oracle Advanced PL/SQL Developer Certified Professional; and holds Oracle Expert Certifications for SQL, SQL Tuning, and Application Express. He is the author of several Oracle certification guides. His Web site, www.oraclecertificationprep.com, is dedicated to providing links to resources for Oracle certification preparation.
Oracle Database 12c includes Heat Map and Automatic Data Optimization, two original features to better manage data storage and compression. The Heat Map instrument tracks data utilize at row and segment levels to establish patterns. Automatic Data Optimization takes this information and automatically moves or compresses data based on user-defined policies.
The Heat Map instrument and Automatic Data Optimization (ADO) feature are portion of Oracle's strategy for managing enterprise data from cradle to grave. portion of that strategy includes storage tiering, which stores data on different tiers depending on access and performance needs.
Heat Map and ADO gain storage tiering feasible so that the most lively data is stored on the highest-performing tier and the least lively data is on a less-critical tier. By using Heat Map and ADO, you can automate the often-cumbersome process of pitiful the right data to the right residence at the right time without impacting operations.Oracle 12c Heat Map tool
When gathering data use, Heat Map tracks write and read times at the row flat and aggregates these statistics up to the obstruct level. At the segment level, Heat Map furthermore tracks write and read times, along with index lookup and plenary table scan times.
You can enable the Heat Map instrument at the system or session level. However, you must enable it at the system flat to uphold ADO. Once enabled, Heat Map collects usage information and makes it available to ADO. You can furthermore access the information through a set of built-in views that provide details about the usage data collected at the segment level. These views include:
To dive deeper into the information that Heat Map creates, you can utilize the DBMS_HEAT_MAP PL/SQL package, which provides an interface to the Heat Map data at various levels, including blocks, extents, segments, objects and tablespaces. The package contains a set of procedures that give you details about how data is accessed in your database.Automatic Data Optimization
Although it can live useful to access the Heat Map instrument manually, the more principal office is its competence to automatically supply ADO with information it needs to pace and compress data. Automatic Data Optimization provides the mechanisms necessary for applying the Heat Map information to the stored data.
At the heart of ADO is a set of user-defined policies that specify your storage tiering preferences. Oracle Database evaluates the policies periodically to determine whether any data should live moved or compressed and when to attain it. If an action needs to live taken, ADO carries it out automatically during the database maintenance window. A database administrator can furthermore execute the policies manually.
You define one or more ADO policies on the table that accommodate the data you want to manage. A policy can specify whether to implement compression or pace the data.
When configuring a compression policy, you must choose the compression nature and whether to implement compression at the row or segment level, and identify when the compression is to live carried out. For example, suppose you're configuring a policy on a table that contains sales data. For the compression type, you choose advanced row compression. You then determine compression should occur at the segment level. Finally, you specify that the data should live compressed after 60 days without any modifications.
Automatic Data Optimization policies uphold a number of compression types:
When configuring a policy to pace data, you must specify the destination tablespace where you want the data moved.
You can define an ADO policy within a CREATE TABLE statement or ALTER TABLE statement. live certain to view Oracle Database documentation for more specifics about the mechanics of adding a policy to a table, as well as disabling, enabling, deleting and viewing ADO policies.
Oracle furthermore provides a number of data dictionary views that revert details about ADO policies. In addition, Oracle offers two PL/SQL packages for carrying out advanced management tasks on ADO policies. The DBMS_ILM package provides tools for evaluating ADO policy operations and managing ADO-related tasks. The DBMS_ILM_ADMIN package provides tools for customizing ADO policy execution. Once again, live certain to mention to Oracle Database documentation.
About the author Robert Sheldon is a technical consultant and the author of numerous books, articles and training material related to Microsoft Windows, various relational database management systems, and industry intelligence design and implementation.
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