Stability and Performance - Oracle WebLogic Server 12c Advanced Administration - page 210

All -Xverbose JRockit loggings are not redirected to the server logfile
and still written to the PROD_ServerXX.out file.
Rotating the STDOUT log will be explained further on this chapter.
There's more...
The log disk usage can be limited with WLST.
Limiting the log disk usage by using WLST
1. Log in as the wls user to shell and start WLST:
[wls@prod01]$ $WL_HOME/common/bin/wlst.sh
2. Connect to the Administration Server using wlsadmin as the user, <pwd> as the
password, and t3://adminhost.domain.local:7001 as the server URL:
wls:/offline> connect("wlsadmin","<pwd>","t3://adminhost.domain.
local:7001")
3. Run the following WLST commands:
edit()
startEdit()
cd('/Log/PROD_DOMAIN')
cmo.setRotateLogOnStartup(true)
cmo.setFileMinSize(50000)
cmo.setNumberOfFilesLimited(true)
cmo.setFileCount(20)
cd('/Servers/PROD_Server01/Log/PROD_Server01')
cmo.setRotateLogOnStartup(true)
cmo.setFileMinSize(50000)
cmo.setNumberOfFilesLimited(true)
cmo.setFileCount(20)
cmo.setRedirectStdoutToServerLogEnabled(true)
cmo.setRedirectStderrToServerLogEnabled(true)
cmo.setStdoutSeverity('Off')
cd('/Servers/PROD_Server01/WebServer/PROD_Server01/WebServerLog/
PROD_Server01')