I'm a complete newbie here... but I wanted to share with you a problem that's driving me mad.
I've got a database that has been monitored for quite a long time. But now, for some reason, it keeps showing errors intermittently.
Working fine one moment, then on error for the next two or three runs of the monitor.
This is the error message the monitor prints on the screen:
The 12514 error is usually caused by a problem with the tnsnames.ora file and it does not recognise the connection name being passed to it.
Are you trying to connect to a non-Oracle database using a gateway or another Oracle database ?
How are you making the connection ? Check that you have the correct tnsnames.ora file being accessed and that it has the connect name you are trying to use.