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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 ameliorate course that essential to subsist adopted by way of the clients.
there are lots of who are overconfident and blindly rush in as soon as a novel unlock comes out. They are trying to download or ameliorate even before figuring out what precisely they deserve to do. besides the fact that children, this may, many of the time, understanding catastrophe, which can subsist lots extreme in terms of a company or commercial enterprise ambiance. during 2016, they noticed the two latest Oracle Database models:
Oracle Database 12c - traffic version: As Oracle’s flagship database suite, EE is a full-featured version of Oracle RDBMS with the option to collect 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 supposed for small 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 effortless upward compatibility to the greater version.Upgrading to Oracle Database 12c
for people that are using older versions of Oracle databases, the ameliorate path to Oracle Database 12c is simple. despite the fact, when you are using a version that does not assist a prerogative away improve, you then should first ameliorate 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 Use 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 gain the alternative to fix any mistakes without slow from the DBUA, and moreover, it makes monitoring the ameliorate plenty simpler and in precise-time. with the aim to Use DBUA, users deserve to entry the home page of Oracle Database 12c and start by using working the DBUA. The optimal exercise is to Run the preupgrd.sql to gawk what can furthermore gain to repair before working the assistant.operating PREUPGRD.SQL
For operating ‘preupgrd.sql’, one first must set up novel binaries into Oracle DBA home. once this is achieved, set up the environment to connect it to the database needed to subsist upgraded.
As a sample, they will buy the instantly brokendown 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/18.104.22.168/dbhome_1/rdbms/admin
After this, they gain to unite the 11g database with SQL*Plus to Run preupgrd.sql#>sqlplus / as sysdba SQL>@preup grd.sql
After operating the script, they will collect the file places, which are necessary for reference to examine and rectify any considerations with the environment later.
The outcomes of this check may subsist located at:/choose/oracle/cfgtoollogs/ora11/preup grade/preup grade.log
The pre-improve fix-up script Run on the source database environment is:/choose/oracle/cfgtoollogs/ora11/preup grade/preup grade_fixups.sql
The submit-upgrade fix-up script Run 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 wicked lot easier. The blunders listed in preupgrade.log furthermore obligatory to subsist 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 Run the DBUA:#> cd/opt/oracle/product/22.214.171.124/dbhome_1/bin #> ./dbua&
working this will excite the GUI to birth instantly and collect upgraded. There is not any should change anything else in the ambiance, that can nonetheless subsist the 11g installation.ORACLE_SID=ora11g ORACLE_BASE=/decide/oracle ORACLE_HOME=/choose/oracle/product/eleven.126.96.36.199/db_1
as soon as the DBUA starts, simply observe 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 exigency to identify which Oracle domestic has to subsist upgraded. As they now gain it set to 11g home, in this case, the DBUA will demonstrate everything databases linked to the 11g Oracle domestic. select which database has to subsist upgraded and click on subsequent.Step three
The effects may subsist akin to what they noticed at preupgrade.log. The DBUA is furthermore working the identical preupgrd.sql script and may recrudesce with the outcomes. however, the second is made to subsist more intellectual with the capability to allow clients to select even if the issues to subsist fixed, left out, or revalidated.Step 4
Oracle has made a captivating exchange prerogative here because the ameliorate may furthermore subsist carried out in parallel. here's made viable with the aid of clever Perl script referred to as catctl.pl. they can furthermore recompile objects in parallel and let the DBUA collect records, perform upgrades, and execute the tablespaces examine-handiest because the ameliorate runs.Step 5
This step will allow clients to exploit the Oracle Database 12c environment. you could Use 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 build in on the server.Step 6
clients can specify where the records information exigency to subsist moved and installation the snappily restoration enviornment (FRA). you could additionally configure the Oracle Managed information (OMF).Step 7
This step is designed to aid 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 subsist migrated.Step 8
Now, users gain 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 finish a backup if you are confident about your current backup practices.Step 9
we now gain reached the abstract screen, so they can interpret what the DBUA plans to do. overview this array cautiously to execute unavoidable that every shrimp thing is so as before clicking the ‘conclude’ button to birth the upgrading process. once clicked, the ameliorate will dawn and they will contemplate that fame on the progress display.
as soon as the ameliorate is achieved, the cease button on the window will change to ‘improve results.’ click on on this and you'll contemplate 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 gain 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.
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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 subsist expected for an OCA certification. A big number of topics and lofty question count execute 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 Great 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 novel listings for Oracle DBAs. I’m not in the market for a novel 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 gain announced its existence. The complete 12c track will follow the model of 10g and 11g with a total of three exams. That said, the 1Z0-062 exam is a far bellow 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 comprehend 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 suffer will not subsist quite the identical as users taking the production exam. The one I took had 150 questions. Unfortunately, I finish not recall whether I had 150 or 180 minutes to complete it. I remember being under significant time pressure to complete the last 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 suffer less pressure. With a bit over 90 seconds per question, the sticking point is not going to subsist whether you gain enough time to thoroughly read the question and answers but whether you studied enough to subsist able to recognize the rectify reply when you contemplate it.
The exam covers a huge range of topics. I gain 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 subsist able to finish their job effectively. However, before you collect done preparing for this exam, you might find yourself wishing that Oracle University had decided to vanish back to the four-test OCP model that was used until release 9i of Oracle. That would gain 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 last minute decision involving a free voucher and the last week of the beta period. The suffer was not a pleasant one as I preeminent on my blog the day after the exam. I would worship to subsist able to state with conviction that my troubles could subsist 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 gain to wonder if one of the graders took condolence on me, though.
Even fully prepared, this exam would gain been harder than I expected. There is no doubt in my mind 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 hardship of exams as OCA-level, OCP-level, or OCE-level to betoken increasing degrees of difficulty. In my experience, the test developers at Oracle University seem to gain a target level of hardship based on those three certification classes. The 1Z0-062 exam, however, is an OCA certification that is bordering on OCP-level difficulty. subsist sure to budget sufficient time to prepare thoroughly. When making a option between being over-prepared or under-prepared, I highly recommend selecting option one. profitable 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 novel features to better manage data storage and compression. The Heat Map tool tracks data Use 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 tool and Automatic Data Optimization (ADO) feature are fraction of Oracle's strategy for managing enterprise data from cradle to grave. fraction of that strategy includes storage tiering, which stores data on different tiers depending on access and performance needs.
Heat Map and ADO execute storage tiering viable so that the most vigorous data is stored on the highest-performing tier and the least vigorous data is on a less-critical tier. By using Heat Map and ADO, you can automate the often-cumbersome process of poignant the prerogative data to the prerogative zone at the prerogative time without impacting operations.Oracle 12c Heat Map tool
When gathering data use, Heat Map tracks write and read times at the row level and aggregates these statistics up to the obscure level. At the segment level, Heat Map furthermore tracks write and read times, along with index lookup and replete table scan times.
You can enable the Heat Map tool at the system or session level. However, you must enable it at the system level to support 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 Use 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 subsist useful to access the Heat Map tool manually, the more primary role is its ability to automatically supply ADO with information it needs to walk 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 subsist moved or compressed and when to finish it. If an action needs to subsist 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 hold the data you want to manage. A policy can specify whether to implement compression or walk the data.
When configuring a compression policy, you must elect the compression type and whether to implement compression at the row or segment level, and identify when the compression is to subsist carried out. For example, suppose you're configuring a policy on a table that contains sales data. For the compression type, you elect advanced row compression. You then determine compression should occur at the segment level. Finally, you specify that the data should subsist compressed after 60 days without any modifications.
Automatic Data Optimization policies support a number of compression types:
When configuring a policy to walk 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. subsist sure 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 recrudesce 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, subsist sure to refer 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 traffic intelligence design and implementation.
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