Fixing Output Post-processor actions failed issues in EBS R12Environment: Oracle EBS 12.1.3, Oracle Database 11gR2, RedHat Linux5Symptoms:Users unable to open the out files.Concurrent requests failed with “Post-processing of request failed error message”One or more post-processing actions failed. Consult the OPP service log for details.No further attempts will be made to post-process this request.Cause:The concurrent manager process was able to successfully invoke the Output Post-Processor (OPP) but encountered a timeout as the OPP takes longer than the valueassigned to complete the job.Solution:1,Increase the value of profile Concurrent: OPP Response Timeout . Bounce Apache and retest.2,If the issue still exists, perform the following steps.3,Increase the number of Output Post Processors as follows:4,Increase the number of processes for Output Post Processor.5,Additionally, ensure there is a setting of  oracle.apps.fnd.cp.opp.OPPServiceThread:2:0:max_threads=5 under Parameters.For more details Please  check metalink I.E oracle.supportConcurrent Requests Fail Due to Output Post Processing (OPP) Timeout [ID 352518.1]Ouput Post Processing Fails Due To java.lang.ThreadDeath [ID 427233.1]Why Does OPP Intermittently Completes With Warnings and Error 'java.lang.OutOfMemoryError'? [ID 978495.1]To know more this post is very nice http://knoworacleappsdba.blogspot.in/2012/07/all-about-output-post-processor-opp-in.htmlHow to start the Output Post Processing (OPP) in 11iAt least one OPP process active in the system. The concurrent processing uses the Output Post Processor (OPP) to enforce post-processing actions for concurrent requests. For example, post-processing action is that used in publishing concurrent requests with XML Publisher.Actually when you have submit a request with XML Publisher template specified as a layout for the concurrent request output. Once finishes the concurrent manager concurrent program, it will contact the OPP to apply the XML Publisher template and create the final outputTo activate the OPP follow these setps：The Profile Option "Concurrent: GSM Enabled" must be set to Y

Then:1. Login to Apps with sysadmin responsibility2. Navigate to: Concurrent -> Managers -> Define3. Query forManager = 'Output Post Processor%'or Short Name = FNDCPOPP4. Check the checkbox "Enable" .5. Click on 'Work Shifts button6. see Work Shift of the OPP andSet Processes = 1and Parameters = oracle.apps.fnd.cp.opp.OPPServiceThread:2:0:max_threads=5and Sleep Second = 307. SaveHow to restart Oracle Apps 11i OPP via non unix commandIt can be done using adcmctl.sh script only and there is no specific script for OPP. You can restart it from the application via (System Administrator responsibility > Concurrent > Manager > Administer), select "Output Post Processor" and click on the "Restart" button.OPP Issue while generating the XML Output in apps 11iProblem Description:1, Few XML type concurrent programs taking long time and completed with warning OPP log file registered below errorCaused by: java.lang.ThreadDeath2, CPU utilization taking 100% constantly while running the concurrent programs.CauseThe java.lang.ThreadDeath error indicates that the Output Post Processor has reached its processing timeout.SolutionThe following configuration changes are recommended to optimize the environment for these type of reports:1. Increase the value of the Concurrent: OPP Timeout profile option to 10800 seconds.2. Enable the scalability feature of XML Publisher:1. Login as SYSADMIN2. Responsibility: XML Publisher Administrator3. Function: Administration4. Set the following properties:5. Temporary Directory6. Use XML Publisher's XSLT processor: True7. Enable scalable feature of XSLT processor: True   -- By default it’s false8. Enable XSLT runtime optimization: True> After changing the value also the problem still exist. As per the SR suggestion, we increased the java heap size from 1024M to 2048M.a. Bring down the concurrent managers.b. Use the Update statement below, for example:update FND_CP_SERVICESset DEVELOPER_PARAMETERS ='J:oracle.apps.fnd.cp.gsf.GSMServiceController:-mx2048m'where SERVICE_ID = (select MANAGER_TYPE from FND_CONCURRENT_QUEUESwhere CONCURRENT_QUEUE_NAME = 'FNDCPOPP');c. Bring concurrent managers up againPlease check below note's from oracle support427233.1  :Output Post Processing Fails Due To java.lang.ThreadDeath1268217.1: Output Post Processor (OPP) Log Contains Error “java.lang.OutOfMemoryError: Java heap space"1266368.1: Output Post Processor (OPP) Log Contains Error   "java.lang.OutOfMemoryError"978495.1: Why Does OPP Intermittently Completes With Warnings and Error 'java.lang.OutOfMemoryError'?352518.1 :Concurrent Requests Fail Due to Output Post Processing (OPP) Timeout364547.1 :Troubleshooting Oracle XML Publisher For The Oracle E-Business SuiteRegardsMadhan