ORA-18 ORA-604 Making New Connections to Database
Last updated on DECEMBER 06, 2016
Applies to:Oracle Database - Enterprise Edition - Version 188.8.131.52 to 184.108.40.206 [Release 8.0.6 to 11.2]
Information in this document applies to any platform.
*** Checked for relevance on 6-Oct-2014 ***
You receive the following errors when trying to make new connections:
Cause: An error occurred while processing a recursive SQL statement.
(a statement applying to internal dictionary tables).
Action: If the situation described in the next message on the stack can be corrected, do so; otherwise, contact customer support.
Cause: An operation requested a resource that was unavailable.
The maximum number of sessions is specified by the initialization parameter SESSIONS.
When this maximum is reached, no more requests are processed.
Action: Try the operation again in a few minutes. If this message occurs often, shut down Oracle, increase the SESSIONS parameter in the initialization parameter file, and restart Oracle.
NOTE: No new connections are permitted to the database.
Selecting count(*) from V$SESSION returns a value that is less than the current setting of the SESSIONS parameter which is either derived (default) or specifically set in the "init.ora".
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