PostgreSQL might not shut down when you try to stop it using the stoppgsql.sh script. You also might receive the following message:

waiting for postmaster to shut down............................................................... failed
pg_ctl: postmaster does not shut down

To resolve this issue, perform the following steps:

1. Ensure that Xythos has stopped.
2. Add "&" to the end of the command, according to the following example:
   
   ./stoppgsql.sh &

You should receive the following message that indicates that PostgreSQL has shut down successfully:

waiting for postmaster to shut down....<Date Time> LOG: logger shutting down
 done
postmaster stopped

You can also confirm that PostgreSQL has been shut down by performing one of the following commands:

1. ps -ef | grep post
2. netstat -an | grep 5432

If no results are returned, PostgreSQL has been shut down.

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