The heap usage is 92%.

Target type=Oracle WebLogic Server
Target name=XXXXX
Categories=Capacity
Message=The heap usage is 92%.
Severity=Critical
Event reported time=May 6, 2014 5:01:22 AM
Operating System=Linux
Platform=x86_64


Solution:
======

We have been receiving the below alert for heap usage for OMS frequently, we Increased the max heap memory setting.

Here are the couple of steps to be  performed in attaining this.

1. $emctl stop oms -all

2.  For Unix platforms:

Please have a backup and edit the file /gc_inst/user_projects/domains/GCDomain/bin/setDomainEnv.sh as follows:

Change the following line from

  CUSTOM_MEM_ARGS_64BIT="-Xms${XMS_SUN_64BIT}m -Xmx${XMX_SUN_64BIT}m"
to
 CUSTOM_MEM_ARGS_64BIT="-Xms512m -Xmx1024m"

3. Start the OMS
OMS_HOME/bin/emctl start oms

FYI: EM 12c: Heap Usage Metric Generating Critical Alerts for EMGC_ADMINSERVER target (Doc ID 1482205.1)