Where to increase Java Heap settings for Admin and Managed Server.

Question

Hello Experts
I am having issue with increasing the JVM memory arguments for the Admin and Managed Servers. I have tried in a couple of places to increase the memory arguments (Xms and Xmx to 1024m)but its not taking effect. When I start the Admin Server and Managed server , I do not see the increased Heap settings. Here is what I see -
"Starting WLS with line : /oracle/app/bi/Oracle_BI1/jdk/java -server - Xms256m -Xmx512m -XX:MaxPermSize=512m"
I have the following memory arguments in the setDomainEnv.sh located in <DOMAIN_HOME>/bin
XMS_SUN_64BIT ="2048"
export XMS_SUN_64BIT
XMX_SUN_64BIT="2048"
export XMX_SUN_64BIT
Looks like this did not work , so I added an entry in the setOBIDomainEnv.sh file hoping to increase the Java memory , but that does not work either. Below is from setOBIDomainEnv.sh file -
Really, trying to understand where/how the JVM settings are controlled from. Please guide me.
Appreciate your time.
Rakesh

Answer 1

Under setobidomainenv.sh you will also find the admin server tag's so you need to increase the jvm parameters in there too. Depending upon your java vendor and bit version(Sun/Oracle/IBM/HP and 32-bit vs 64-bit ) So change accordingly
eg:
if server group is not obi then we can assume that it is Admin Server
  if [ "${JAVA_VENDOR}" = "Sun" ] ; then
  # -UseSSE42Intrinsics required for server running EM
  if [ "${JAVA_USE_64BIT}" = "true" ] ; then
  # Admin Server memory args for 64-bit Sun JVM
  SERVER_MEM_ARGS="-Xms256m -Xmx1024m -XX:MaxPermSize=512m -XX:-UseSSE42Intrinsics"
  export SERVER_MEM_ARGS
similarly in setdomain.sh you will find the args as below:
XMX_SUN_64BIT="512"
export XMX_SUN_64BIT
XMS_SUN_64BIT="256"
export XMS_SUN_64BIT
if [ "${JAVA_VENDOR}" = "Sun" ] ; then
  WLS_MEM_ARGS_64BIT="-Xms256m -Xmx512m"
  export WLS_MEM_ARGS_64BIT
  WLS_MEM_ARGS_32BIT="-Xms256m -Xmx512m"
  export WLS_MEM_ARGS_32BIT
after setting them just execute them ./setdomain.sh and ./setobidomainenv.sh and then try to start the admin and managed servers and see the process running with the updated values.