jvm tuning for EBS R12.1

<maxclients oa_var="s_maxclients">10240</maxclients>
forms 		-Xmx1024M -Xms1024M -XX:MaxPermSize=128M   5
oacore 		-Xmx2048M -Xms2048M -XX:MaxPermSize=160M   10
oafm 		-Xmx1024M -Xms1024M -XX:MaxPermSize=128M   10
forms-c4ws 	-Xmx512M -Xms128M -XX:MaxPermSize=128M     10

egrep -i 's_lock_pid_dir|s_pids_dir|s_web_pid_file|maxclients|nprocs|portrange|start_options' $CONTEXT_FILE

sed -i '129{s#-Xmx256M -Xms64M#-Xmx512M -Xms256M#}' $CONTEXT_FILE

egrep 's_isAdAdmin|s_isAdConc|s_isAdConcDev|s_batch_status|s_tnsstatus|s_isForms|s_isFormsDev|s_formsstatus' $CONTEXT_FILE
egrep 's_appl_config_home|s_applcsf|s_fndreviverpiddir|s_atName' $CONTEXT_FILE
egrep -i 's_lock_pid_dir|s_pids_dir|s_web_pid_file' $CONTEXT_FILE #must_local_disk

adpatch defaultsfile=$APPL_TOP/admin/$TWO_TASK/defaults.txt options=nocopyportion,nogenerateportion,nocompilejsp workers=16

1个有效的 JVM/OC4J 实例 per CPU 100个用户 =>oacore
1个有效的 JVM/OC4J 实例 per CPU 100-250个用户 =>forms

Oracle Optimized Solution for Oracle E-Business Suite on SPARC SuperCluster Example Implementation Guide (Doc ID 1557489.1)
TUNED:
<lock_pid_dir oa_var="s_lock_pid_dir">/tmp</lock_pid_dir>
<maxclients oa_var="s_maxclients">10240</maxclients>
<frmsrv_nprocs oa_var="s_frmsrv_nprocs">10</frmsrv_nprocs>
<forms_nprocs oa_var="s_forms_nprocs">2</forms_nprocs>
<oacore_nprocs oa_var="s_oacore_nprocs">10</oacore_nprocs>
<jdbc_proc_esc oa_var="s_jdbc_proc_esc">true</jdbc_proc_esc>
<oafm_nprocs oa_var="s_oafm_nprocs">5</oafm_nprocs>
<forms-c4ws_nprocs oa_var="s_forms-c4ws_nprocs">4</forms-c4ws_nprocs>

NOTE:567551.1 – Configuring various JVM tuning parameters for Oracle E-Business suite 11i and R12
NOTE:1557489.1 – Oracle Optimized Solution for Oracle E-Business Suite on SPARC SuperCluster Example Implementation Guide
NOTE:362851.1 – JVM: Guidelines to Setup the Java Virtual Machine in E-Business Suite 11i and R12

NOTE:454811.1 – Upgrading to the Latest OracleAS 10g 10.1.3.x Patch Set in Oracle E-Business Suite Release 12
NOTE:400591.1 – Poor Performance, Crashing, Restarts Using OHS 10g-12c on Shared File Systems ( NAS / NFS / ZFS )
NOTE:560853.1 – HTTP Server Is Either Slow Or Stops Responding When Installed On A NFS Mounted Drive
NOTE:787116.1 – Intermittent Login Failure on Shared Filesystem; Apache error_log Shows “mod_oc4j: pt_alloc failed”
NOTE:785296.1 – Resolving error mod_oc4j Failed To find A Failover OC4J Process For Session Request For Destination
NOTE:732857.1 – R12: Http Server Crashing Frequently With Segmentation Fault (NAS or SAN filesystem)
NOTE:850871.1 – MOD_OC4J Produces error “Failed to find a failover oc4j process for session request for destination: appname” while the Application Works Correctly
NOTE:2324062.1 – Oracle HTTP Server Fails to Start with error ” AH00052: child pid 8782 exit signal Segmentation fault (11)”
NOTE:2035345.1 – Apache Servers Restarting Due To MaxClients Error
NOTE:415244.1 – Error on libdb Library Installing, Patching or Starting OHS 10g on Linux Platforms
NOTE:879522.1 – Attempting to Start Apache (adapcctl.sh) Throws an ‘Error While Loading Shared Libraries: libdb.so.2’ on Linux
NOTE:1536268.1 – httpd Process Generates Core Files After Enabling SSL
NOTE:761566.1 – Oracle E-Business Suite Installation and Upgrade Notes Release 12 (12.1.1) for Linux x86-64
NOTE:250262.1 – RDA – Health Check / Validation Engine Guide
NOTE:388205.1 – Starting Apache in EBS 11.5 Technology Stack Fails – “Address already in use: make_sock: could not bind to port”
NOTE:402397.1 – Address already in use: make_sock: could not bind to port number.
NOTE:1940314.1 – Port Conflicts In EBS – Address already in use