Staged APPL_TOP in R12

Last updated on September 1st, 2016 at 05:22 amA staged Applications system represents an exact copy of your Production system, including all APPL_TOPs as well as a copy of the Production database. Patches are applied to this staged system, while your Production system remains up. When all patches have been successfully applied to the test system, the reduced downtime for the Production system can begin. … Continue reading Staged APPL_TOP in R12 »

Oracle apps:Topology information

Last updated on November 23rd, 2015 at 03:32 pmHere is the statement to find out Topology information for R12/R11i SELECT fn.HOST || ‘.’ || fn.DOMAIN HOSTNAME, ftlp.PORT, fdi.SID SID FROM FND_DATABASES fd, FND_DATABASE_INSTANCES fdi, FND_TNS_LISTENERS ftl, FND_TNS_LISTENER_PORTS ftlp, FND_APP_SERVERS fas, FND_NODES fn WHERE fd.DB_GUID=fdi.DB_GUID AND fdi.SERVER_GUID=fas.SERVER_GUID AND ftl.LISTENER_GUID = ftlp.LISTENER_GUID AND ftl.SERVER_GUID = fas.SERVER_GUID AND fn.NODE_ID = fas.NODE_ID; select NAME, SERVER_TYPE from FND_APP_SERVERS, FND_NODES where FND_APP_SERVERS.NODE_ID … Continue reading Oracle apps:Topology information »

How to find optimizer and database underscore/hidden parameter in Oracle

Last updated on March 30th, 2019 at 08:29 amThis article is part of Oracle database administration tutorials and has query,explanation and examples on how to find the  underscore/hidden parameters for Optimizer and in general any oracle database underscore parameters Query to list all the underscore parameter with Description set lines 132 column name format a45 column description format a50 select ksppinm name, ksppdesc description from … Continue reading How to find optimizer and database underscore/hidden parameter in Oracle »

Various Joins Method in Oracle

Last updated on September 15th, 2016 at 05:24 amPerformance is key for OLTP system and we should have good information about Joins Method in Oracle to increase performance for sql queries Here are the  Joins Method in Oracle available in Oracle database Nested Loops -For each row in the first row source access all the rows from the second row source. -Best for OLTP type transactions … Continue reading Various Joins Method in Oracle »

Optimizer Mode

Last updated on November 23rd, 2015 at 03:34 pmSet in the Init.Ora Can be changed via ALTER SESSION CHOOSE, FIRST_ROWS, ALL_ROWS = cost based optimization RULE = rule based optimization Optimizer_Mode = Rule Original optimizer developed by prior to 7 Applications prior to 11i must run as RULE to be supported Documentation has warned of its removal uses strict rules for determining the execution path … Continue reading Optimizer Mode »

What is Oracle Database Lite 10g

Last updated on September 15th, 2016 at 05:30 amOracle Database Lite 10g extends the power of grid computing to a mobile workforce with a complete, integrated, secure database for building, deploying, and managing mobile applications for a broad range of mobile devices. Oracle Database Lite 10g enables persistent access to critical information and applications without requiring continuous connectivity to back-end enterprise systems. As a result, … Continue reading What is Oracle Database Lite 10g »

Oracle DBA: Hanganalyze and system state dump

Last updated on August 31st, 2016 at 01:11 pmMany times Oracle database get hangs due to locks or latching issue and Nobody can login to the system. It becomes critical and  And Usually we do shutdown abort to immediately resolve the issue. But  it is good to take system state dump/hanganalyze  at 1 min interval to analyze the locking or latching  issue afterwards before doing … Continue reading Oracle DBA: Hanganalyze and system state dump »

how to perform relink in Oracle

Last updated on August 31st, 2016 at 01:30 pmSometimes Oracle components may start giving strange issues like coredump  or the Operating system is patched, In these cases it is always recommended to try oracle relink to resolve the issues.A Oracle relink is also necessary whenever you install a new release or a patchset or when there is a patch or upgrade to the OS environment. Oracle … Continue reading how to perform relink in Oracle »

Oracle DBA: How to schedule jobs in Oracle Database

Last updated on August 31st, 2016 at 05:09 pmWe often wants to run pre-defined jobs at different schedule. Oracle database provides dba_jobs/dbms_scheduler (Oracle Database job scheduler) for the scheduling of pre-defined jobs. Information about DBA_JOBS ( Till 9i) Query to see the jobs running through dba_jobs select /*+ rule */ * from dba_jobs_running; or select /*+ ordered */ * from dba_jobs_running; Common Reason why jobs don’t execute … Continue reading Oracle DBA: How to schedule jobs in Oracle Database »

Core file for oracle concurrent manager

Last updated on August 25th, 2016 at 04:01 amOracle concurrent managers consists of many executable and we often faced various issues with it.When an executable ends with a segmentation fault or signal 11, a core file for oracle concurrent manager  should be created. If you are not finding that a core file is created, then the ulimit may be set to 0 for core files … Continue reading Core file for oracle concurrent manager »

11g Alert log new features

Last updated on November 28th, 2015 at 11:58 am11g Alert log new features Beginning with Release 11g of Oracle Database, the alert log is written as both an XML-formatted file and as a text file, as in earlier releases.Both these log files are stored inside the ADR home.The ADR root directory is known as ADR BASE.The Automatic Diagnostic Repository (ADR) is a directory structure that … Continue reading 11g Alert log new features »