Distributed AD

Last updated on November 23rd, 2015 at 03:46 pm1)Distributed AD offers improved scalability, performance, and resource utilization by allowing workers of the same AD session to be started on additional middle tier systems. 2)AD has always utilized a Parallel Jobs System, where multiple AD workers start and are assigned jobs. Information for the Jobs System is stored in the database, and workers receive their assignments … Continue reading Distributed AD »

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 »

Interconnect setup in RAC

Last updated on November 23rd, 2015 at 03:42 pmThe interconnect is a very important part of the cluster environment it is on of the aorta’s of a cluster environment. The interconnect is used as physical layer between the cluster nodes to perform heartbeats as well as the cache fusion is using it. The interconnect must be a private connection. Cross over cable is not support. … Continue reading Interconnect setup in RAC »

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 underscore parameter

Last updated on November 23rd, 2015 at 03:31 pmHow to find optimizer underscore parameter SELECT x.ksppinm name, y.ksppstvl VALUE, ksppstcmnt update_comment FROM x$ksppi x, x$ksppcv y WHERE x.inst_id = userenv(‘Instance’) AND y.inst_id = userenv(‘Instance’) AND x.indx = y.indx AND x.ksppinm LIKE ‘%optim%%’; How to find background process information select nm, max(description) descript from (select regexp_replace( name,'[0-9a-z]’,’#’) nm, description from v$bgprocess) group by nm order by … Continue reading How to find optimizer underscore parameter »

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 »

How FNDFS (Oracle Report Review agent) works in EBS environment

Last updated on September 1st, 2016 at 04:50 amExplaining how FNDFS working 1) The user selects ‘Request Output’, ‘Request Log’, or ‘Manager Log’ 2) The file name and nodename are selected from the database. Reports: SELECT outfile_name, outfile_node_name FROM fnd_concurrent_requests WHERE request_id = :id; Logfiles: SELECT logfile_name, logfile_node_name FROM fnd_concurrent_requests WHERE request_id = :id; Manager logs: SELECT logfile_name, node_name FROM fnd_concurrent_processes WHERE concurrent_process_id = :process_id; 4. … Continue reading How FNDFS (Oracle Report Review agent) works in EBS environment »

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 »