Every 10 minutes or so, I have Grid Control sending me an alert similar to the following:
Failed to connect to database instance: ORA-12519: TNS:no appropriate service handler found (DBD ERROR: OCIServerAttach).
The database was running just fine and should be up and running. Signing on to the database server and issuing “lsnrctl status” showed that all of the services were configured in the Listener for normal operations:
Services Summary…
Service “orcl.acme.com” has 1 instance(s).
Instance “orcl”, status READY, has 1 handler(s) for this service…
Service “orclXDB.acme.com” has 1 instance(s).
Instance “orcl”, status READY, has 1 handler(s) for this service…
Service “orcl_XPT.acme.com” has 1 instance(s).
Instance “orcl”, status READY, has 1 handler(s) for this service…
The command completed successfully
So why am I getting alerted every ten minutes or so? A quick connection to the database gave me the problem:
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sqlplus /nolog
SQL*Plus: Release 11.1.0.7.0 – Production on Mon Jul 18 13:47:16 2011
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SQL> connect / as sysdba
ERROR:
ORA-00020: maximum number of processes (%s) exceeded
Oops! We have exceeded the process limit defined by the PROCESSES parameter. Why Oracle does not give us the ORA-00020 error instead of the ORA-12519 is beyond me.
