Find the patch applied

In obiee 11g you can find the patches applied with the command

opatch lsinventory

cd $ORACLE_HOME\ORACLE_INSTANCE\OPatch
ex: C:\OBIEE11G\Oracle_BI1\OPatch

 in some cases you may find the error:

Oracle home is hot OUI based home.

In such cases set the Oracle home and then run the opatch command

set ORACLE_HOME=C:\BIEE11G\Oracle_BI1