Some of the Troubleshooting issues with commands

 For Setting a Class Path

WL-Home\servers\bin SetwlsEnv.cmd (windows)

WL-Home\servers\bin SetwlsEnv.sh (Unix)

For Setting a set Domain

WL-Home\servers\bin SetDomainEnv.cmd(win)

WL-Home\servers\bin SetDomainEnv.sh(Unix)

To increase WLS Memory

 set minimum and maximum to same size

$ Java ...-ms32m -mx32m      -> it will allocate 32 megabytes.

            :Xms2048m - Xmx2048m

 Increase Permgenspace
-XX :Maxpermsize=256m (default =64m).

To Enable verboseGC

Java_Options = -"Xverbose:Memory,gcreport,gcpause-xverbosetimestamp"

Enable core dump

sun JVM;  -xx:+ShowMessageBoxOnError

Jrockit JVM: -Djrockit.WaitOnError

Windows : DrWatson

Server is listening on the specified port number or not

telnet <IP> <Port>

Ex: telnet 199.129.212.1 8080

To check server is alive or not

Ping <IP>

Ex: Ping 199.129.212.1

start Managed Server Independence Mode?

nohup./StartManagedWeblogic_ManagedServername.sh&

weblogic server Process ID

usr/ucb/ps -auxwww | grep java

Thread dump:

Ps -ef | grep java

kill -3 <PID>             
ctl + Break

jstack <PID>   

1.