Answer:
Please follow the below steps:
Step 1: Take backup of bsu.sh script.
[applmgr@ebsapps bsu]$ pwd
/u01/app/applmgr/fs1/FMW_Home/utils/bsu
[applmgr@ebsapps bsu]$ cp bsu.sh bsu.sh_12May2015
Step 2: Edit bsu.sh script and increase the memory. Make sure have enough free memory in server.
set MEM_ARGS=-Xms1024m -Xmx1024m
to
set MEM_ARGS=-Xms2048m -Xmx2048m
Step 3: Start weblogic patch.
[applmgr@ebsapps bsu]$ ./bsu.sh -install -patch_download_dir=$FMW_HOME/utils/bsu/cache_dir -patchlist=GFWX -prod_dir=$FMW_HOME/wlserver_10.3 -log=$FMW_HOME/utils/bsu/bsu_weblogic.log
Hope this will work if not then let me know.