In our production instance R12.1.X.X IAS component "oacore" frequently
down/failed.
Check the services in case of oacore failure..
$sh adapcctl.sh status
You are running adapcctl.sh version 120.7.12010000.2
Checking status of OPMN managed Oracle HTTP Server (OHS) instance.
Processes in Instance: PROD.xxxxxxxxxx
---------------------------------+--------------------+---------+---------
ias-component | process-type | pid | status
---------------------------------+--------------------+---------+---------
OC4JGroup:default_group | OC4J:oafm | 19410 | AliveOC4JGroup:default_group | OC4J:forms | 19319 | Alive
OC4JGroup:default_group | OC4J:oacore | 19140 | Failed
HTTP_Server | HTTP_Server | 19069 | Alive
OC4JGroup:default_group | OC4J:oacore | 23108 | failed
To resolve the above issue need to be modify/increase the JVM processes as below in context file:
<oacore_jvm_start_options oa_var="s_oacore_jvm_start_options">-
server -verbose:gc -Xmx512M -Xms128M -XX:MaxPermSize=160M -
XX:NewRatio=2
To
<oacore_jvm_start_options oa_var="s_oacore_jvm_start_options">-
To
<oacore_jvm_start_options oa_var="s_oacore_jvm_start_options">-
server -verbose:gc -Xmx1024M -Xms512M -XX:MaxPermSize=256M -
XX:NewRatio=2
=> Stop the services
=> Stop the services
=> Run autoconfig
=> Restart the services
Check it again:-
$sh adapcctl.sh status
You are running adapcctl.sh version 120.7.12010000.2
Checking status of OPMN managed Oracle HTTP Server (OHS) instance ...
Processes in Instance: PROD.xxxxxxxxx
---------------------------------+--------------------+---------+---------
ias-component | process-type | pid | status
---------------------------------+--------------------+---------+---------
Check it again:-
$sh adapcctl.sh status
You are running adapcctl.sh version 120.7.12010000.2
Checking status of OPMN managed Oracle HTTP Server (OHS) instance ...
Processes in Instance: PROD.xxxxxxxxx
---------------------------------+--------------------+---------+---------
ias-component | process-type | pid | status
---------------------------------+--------------------+---------+---------
OC4JGroup:default_group | OC4J:oafm | 19410 | Alive
OC4JGroup:default_group | OC4J:forms | 19319 | Alive
OC4JGroup:default_group | OC4J:oacore | 19140 | Alive
HTTP_Server | HTTP_Server | 19069 | Alive
In my case issue was resolved successfully ......😁
