Instance detection

This page describes how dbcollect detects (running) Oracle instances and their correct ORACLE_HOMEs.

Running instances

If a logons file is provided (using --logons), dbcollect will NOT automatically detect instances, but only connect to the services listed in the logons file.
If no logons file is specified, dbcollect runs the command ps -eo pid,user,group,args to find all running processes on the OS.
Running instances are matched if the args match ora_pmon_<oracle_sid>