Unable to start OpManager - PGSQL
Sometimes OpManager will not start when the server ran out of disk space in the pg_xlog directory. It will not be possible to retrieve the connection to OpManager database. The files present under OpManager\pgsql\data\pg_xlog get disappeared in such situation(highlighted in the picture below). Running the pg_resetlog.exe will help to retrieve the default files under pg_xlog folder. This is will now allow us to connect to the database and start OpManager successfully.
05:03:34:290 AM com.adventnet.nms.store.NmsStorageException: ERROR: could not extend file "base/16384/256095": No space left on device
Hint: Check free disk space.
com.adventnet.nms.store.NmsStorageException: ERROR: could not access status of transaction 0
Detail: Could not write to file "pg_subtrans/0132" at offset 155648: No space left on device.
Steps to fix it
Download the pg_resetxlog.exe and save it under OpManager\pgsql\bin directory
From command prompt, go to OpManager/pgsql/bin and execute the following command
pg_resetxlog -f "D:\OpManager\pgsql\data" (make sure to provide the path according to installation)