When you deploy patched or support packs , all the previous versions are retained as a backup under SDM repositories.
Please perform the following activity from program folder
./StopServer.sh
./sdm.sh jstartup mode=standalone
./sdm.sh gc sdmhome=/usr/sap/SID/inst#/SDM/program
./sdm.sh jstartup mode=integrated
./StartServer.sh