The fuser unix/linux command...

I colleague turned me on to a helpful command the other night.

Where I work we have an archived log based replication system. It was way behind on processing and the replication process doesn't give any indication of what log its currently chewing on.

/sbin/fuser to the rescue!

• 1) 'cd' to a directory where you want to check the files
• 2) run '/sbin/fuser *' to discover what processes are touching files in the directory

[oracle@test /] cd /u01/app/oracle/oradata/TEST
[oracle@test TEST] ls redo*
redo01.log redo02.log redo03.log
[oracle@test TEST]/sbin/fuser redo*
redo02.log: 5947 15952 15955 15956 16102 27325

From this output we can see that there are a bunch of processes currently interested in redo02.log, but redo01.log and redo03.log are not currently being used.

-- Dave