If Oracle ASM library driver (Oracle ASMLIB) is installed but you do not use it for device path persistence, then deinstall Oracle ASMLIB.
- Log in as root.
- Stop Oracle ASM and any running database instance on the node:
$ srvctl stop instance -d db_unique_name-node node_name
$ srvctl stop asm -node node_name
 
 To stop the last Oracle Flex ASM instance on the node, stop the Oracle Clusterware stack: 
Grid_home/bin/crsctl stop crs 
 
 
- Stop Oracle ASMLIB:
/etc/init.d/oracleasm disable
 
 
- Remove the oracleasmlibrary and tools RPMs:
# rpm -e oracleasm-support
 
# rpm -e oracleasmlib
 
 
- Check if any oracleasmRPMs are remaining:
# rpm -qa| grep oracleasm
 
 
- If any oracleasmconfiguration files are remaining, remove them:
# rpm -qa| grep oracleasm | xargs rpm -e
 
 Oracle ASMLIB and associated RPMs are now removed.