example 1: calculate shared memory usage # ipcs -m|awk '$5 ~ /^[0-9]/ {print $5}'|xargs | sed -e 's/ /+/g' | bc example 2: find process which locks ASM disk # lsof /dev/oracleasm/vote0|awk '$2 ~ /^[0-9]/ {print $2}'|sed 's/ /,/g'|xargs ps -fp UID PID PPID C STIME TTY STAT TIME CMD oracle 1426 1 0 Apr30 ? Ss 0:29 ora_rbal_db1_1 oracle 1463 1 0 Apr30 ? Ss 0:28 ora_rbal_db2_1