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Oracle DBA ScratchpadThis blog is Created to post the various Oracle Topics and scripts.
http://oracledbascratchpad.blogspot.com/
This blog is Created to post the various Oracle Topics and scripts.
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Oracle DBA Scratchpad | oracledbascratchpad.blogspot.com Reviews
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This blog is Created to post the various Oracle Topics and scripts.
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Oracle DBA Scratchpad: Tuning Scripts
http://oracledbascratchpad.blogspot.com/2009/10/tuning-scripts.html
This blog is Created to post the various Oracle Topics and scripts. Tuesday, October 6, 2009. Oracle Database Tuning Statistics. 183; Cache Hit Ratio. 183; Sorts in Memory. 183; Shared Pool. 183; Library Cache Hit Ratios. 183; Recursive Calls/Total Calls. 183; Short/Total Table Scans. 183; Redo Activity. 183; Table Contention. 183; CPU parse overhead. 183; Rollback Segment Contention. There are two main figures. Buffer Cache Hit Ratio. Select round( 1-(pr.value/(bg.value cg.value) )*100,2). The percentag...
Oracle DBA Scratchpad: Performance tuning tips for database developers
http://oracledbascratchpad.blogspot.com/2009/10/performance-tuning-tips-for-database.html
This blog is Created to post the various Oracle Topics and scripts. Tuesday, October 6, 2009. Performance tuning tips for database developers. Performance tuning is not easy and there aren't any silver bullets, but you can go a surprisingly long way with a few basic guidelines. 2 Create an index on any column that is a foreign key. If you know it will be unique, set the flag to force the index to be unique. 3 Don't index anything else (yet). 5 Use set nocount on at the top of each stored procedure (and s...
Oracle DBA Scratchpad: Tuning Oracle's Buffer Cache
http://oracledbascratchpad.blogspot.com/2009/10/tuning-oracles-buffer-cache.html
This blog is Created to post the various Oracle Topics and scripts. Tuesday, October 6, 2009. Tuning Oracle's Buffer Cache. Oracle maintains its own buffer cache inside the system global area (SGA) for each instance. A properly sized buffer cache can usually yield a cache hit ratio over 90%, meaning that nine requests out of ten are satisfied without going to disk. Checking The Cache Hit Ratio. SELECT (P1.value P2.value - P3.value) / (P1.value P2.value). FROM v$sysstat P1, v$sysstat P2, v$sysstat P3.
Oracle DBA Scratchpad: Tuning SQL Statements That Use the IN Operator
http://oracledbascratchpad.blogspot.com/2009/10/tuning-sql-statements-that-use-in.html
This blog is Created to post the various Oracle Topics and scripts. Tuesday, October 6, 2009. Tuning SQL Statements That Use the IN Operator. The product manager, suspecting the customer’s database was not properly tuned or configured, asked me to examine the system. Gaining access to the customer’s database was at first politically touchy, but in the end I got excellent cooperation from the customer’s DBA staff and found their database was in fine shape. The list of values enclosed in the parentheses is...
Oracle DBA Scratchpad: Tuning Joins
http://oracledbascratchpad.blogspot.com/2009/10/tuning-joins.html
This blog is Created to post the various Oracle Topics and scripts. Tuesday, October 6, 2009. How Oracle Processes SQL Statements Involving Joins. Outer joins limit the number of possible join orders because a table being outer joined must appear in the join order after the table it joins to. Let’s use the following query as an example:. SELECT E1.name “Employee Name”, D.deptname “Department”,. E2name “Manager Name”. FROM emp E1, dept D, emp E2. WHERE E1.empno = :empno. AND Ddeptno = E1.deptno. Since the...
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ORACLE DATABASE
An ERROR FREE and EASY TO UNDERSTAND description of various operations of oracle database. All description about various things have been tested and then presented to you. No great genius has ever existed without some touch of madness. View my complete profile. Monday, 23 March 2015. Oracle Multimedia , JAVAM and XML components , ora-04031. To install Oracle Multimedia, first you need to check for the existence of JAVAM and XML components into database. Doc ID 337415.1)". Start of File full rmjvm.sql.
Oracle Dba
The Only Place To Be. Friday, July 17, 2009. While installing 10.2.0.3 Patchset software the OUI was core dumping Java error messages. Java bundled with the software seems to be corrupted and not working. Using the simple runInstaller command to use the Java bundled with the software was. Using that Java OUI was able to get pass the bootstrap phase and the installation went on. SOLUTION / ACTION PLAN. To implement the solution, please execute the following steps:. RunInstaller -jreLoc /opt/java1.4. WHERE...
oracledbascratchpad.blogspot.com
Oracle DBA Scratchpad
This blog is Created to post the various Oracle Topics and scripts. Tuesday, October 6, 2009. Virtual Indexes are another undocumented feature used by Oracle. Virtual indexes, as the name suggests are pseudo-indexes that will not behave the same way that normal indexes behave, and are meant for a very specific purpose. To determine if a new index will improve the performance, without impacting existing or new sessions. Below are some attributes of the Virtual Indexes. 2 Their creation will not affect exi...
Oracle DBA Scripts
Oracle Production support DBA Tips. Want to post your scripts here in this blog? Email it to snojha@gmail.com. You will be rewarded for your scripts if selected by our experts. Friday, August 27, 2010. When we last gathered stats in Oracle 11G. Select * from dba optstat operations;. To see the current retention value,. Select dbms stats.get stats history retention from dual;. Subscribe to: Posts (Atom). Oracle DBA Scripts Links. Bijoo's Oracle DBA Scripts. Jeffrey M. Hunter DBA Scripts - Idev.
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Oracle DBA Scripts
Oracle Apps 11i/R12 - - Oracle 10gAS/Weblogic Server 11g - - Oracle 9i,10g,11g - Oracle APEX. Oracle and MySQL Support. InfraStack-Labs Oracle and MySQL DBA Services help you manage, maintain, and optimize your critical Oracle systems. We deliver 24/7, year-round support with flexible monthly contracts that don’t lock you in. Please contact me :- ajith.narayanan@infrastack-labs.in. Thursday, November 2, 2017. OMegha Public Cloud - Jumpstart Cloud for Startups. Links to this post. Friday, June 9, 2017.
