ORA-15027
        active use of diskgroup "string" precludes its dismount
        
        
        Cause
        An ALTER DISKGROUP ... DISMOUNT command specified a diskgroup which had clients with open files in the diskgroup. Diskgroups cannot be dismounted until all open files in the diskgroup are closed.
        Action
        Stop all clients that are using this diskgroup and retry the ALTER DISKGROUP ... DISMOUNT command.  Query the V$ASM_CLIENT fixed view in an ASM instance or use ASMCMD LSOF to list active clients.
        
     
    
    
        ORA-15027
        active use of diskgroup "string" precludes its dismount
        
        
        Cause
        An ALTER DISKGROUP ... DISMOUNT command specified a diskgroup which had clients with open files in the diskgroup. Diskgroups cannot be dismounted until all open files in the diskgroup are closed.
        Action
        Stop all clients that are using this diskgroup and retry the ALTER DISKGROUP ... DISMOUNT command.  Query the V$ASM_CLIENT fixed view in an ASM instance or use ASMCMD LSOF to list active clients.
        
     
    
    
        ORA-15027
        active use of diskgroup "string" precludes its dismount
        
        
        Cause
        An ALTER DISKGROUP ... DISMOUNT command specified a diskgroup which had clients with open files in the diskgroup. Diskgroups cannot be dismounted until all open files in the diskgroup are closed.
        Action
        Stop all clients that are using this diskgroup and retry the ALTER DISKGROUP ... DISMOUNT command.  Query the V$ASM_CLIENT fixed view in an ASM instance or use ASMCMD LSOF to list active clients.