The Oracle WebLogic App for Splunk Technology Add-on (TA) is bundled inside the package. See details here: https://splunkbase.splunk.com/app/1340/#/details
Once you have installed the app, you can see the available sourcetypes in Setting -> Sourcetype. See below on path location for TA:
/Applications/Splunk/etc/apps/Function1_WebLogicServer/appserver/addons$ ls
Function1_WLS_Admin_nix_TA
Function1_WLS_Managed_win_TA
Function1_WLS_Admin_win_TA
Function1_WLS_nix_performance_TA
Function1_WLS_App
Function1_WLS_win_performance_TA
Function1_WLS_IDX_SH_TA
SA-Eventgen
Function1_WLS_Managed_nix_TA
function1_weblogicserver_eventgen
Also see install guide after you've installed the app: /Applications/Splunk/etc/apps/Function1_WebLogicServer/appserver/README$ ls
WLS_App_TA_Install_Guide.pdf
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