i have check the output of - u01/app/oracle/diag/rdbms/oradb_p/oradb/trace/oradb_asmb_18373.trc
it shows
WARNING: failed to start ASMB (connection failed) state=0x1 sid='+ASM'
ORA-01034: ORACLE not available
ORA-27121: unable to determine size of shared memory segment
Linux-x86_64 Error: 13: Permission denied
Additional information: 8210
Additional information: 26
the ASMB process does not getting started.
can anyone know the solution ?