Uninstall SUN JDK 1.6_14 and install SUN JDK 1.6_18 for Weblogic

Question

My GridControl server has all of a sudden gone wild in consuming 100% of the cpu. The process was java.exe in the Middleware folder. Somebody suggested to verify the JDK and I indeed have an older version than the one recommended.
Does anybody know where it is documented on how to uninstall and then reinstall SUN JDK 1.6_18 and have Weblogic still work afterward? (Win 2008 32 bit)
I'd hate to reinstall the entire Gridcontrol 11g because I have the wrong jdk.
Thanks.

Answer 1

Hi,
Uninstalling SUN JDK 1.6_14 from your Box is optional step....Most of the Servers are flexible enough ...they provide us the facility to change the JDK at any point of time...Without reinstalling the Product from the scrap....
You can directly install SUN JDK 1.6_18 in your WebLogic Server Box. Then you need to make a small change in the *"<DOMAIN_HOME>\bin\setDomainEnv.cmd"* file ...to change the JAVA_HOME variable value...That's all.
Next time whenever you will start your WebLogic Servers it will pick up the SUN JDK 1.6_18 version only.
I am pasting few lines from *"setDomainEnv.cmd"*
@REM *************************************************************************
set WL_HOME=C:\bea103\wlserver_10.3
for %%i in ("%WL_HOME%") do set WL_HOME=%%~fsi
set BEA_JAVA_HOME=C:\bea103\jrockit_160_05
<b><font color=red>set SUN_JAVA_HOME=C:\all_Jdks\JDK 1.6_18</font></b>
set JAVA_OPTIONS=%JAVA_OPTIONS% -Dwhat.is.your.name=Jay_SenSharma
if "%JAVA_VENDOR%"=="BEA" (
     set JAVA_HOME=%BEA_JAVA_HOME%
) else (
     if "%JAVA_VENDOR%"=="Sun" (
          set JAVA_HOME=%SUN_JAVA_HOME%
     ) else (
          set JAVA_VENDOR=Sun
          set JAVA_HOME=C:\bea103\jdk160_05
@REM We need to reset the value of JAVA_HOME to get it shortened AND
@REM we can not shorten it above because immediate variable expansion will blank it
set JAVA_HOME=%JAVA_HOME%
Thanks
Jay SenSharma
http://weblogic-wonders.com/weblogic (WebLogic Wonders Are here)