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RE: ORA-00018: maximum number of sessions exceeded

From: DENNIS WILLIAMS <DWILLIAMS_at_LIFETOUCH.COM>
Date: Mon, 03 Mar 2003 13:59:32 -0800
Message-ID: <F001.0055EFB4.20030303135932@fatcity.com>


Sam - what does

    SHOW PARAMETER SESSIONS show? Just in case you have another line in your init.ora file. No, no that has never happened to me! Other than that, I haven't encountered the problem you describe.

Dennis Williams
DBA, 40%OCP, 100% DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----
Sent: Monday, March 03, 2003 3:24 PM
To: Multiple recipients of list ORACLE-L

We are running Oracle 7.3.4.5.0 on an IBM/AIX RISC System/6000: Version 2.3.4.0.0.  

This afternoon, our users started getting the error message "ORA-00018: maximum number of sessions exceeded." As time went on, the number of sessions was decreasing (as shown by the count of rows in v$session). However, Oracle still did not allow connections. This lasted for about 40 minutes.  

The sessions parameter in the initialization parameter file showed 300.  

Querying v$session showed 246 rows.  

Querying v$license reported:

SQL> select * from v$license;  

SESSIONS_MAX SESSIONS_WARNING SESSIONS_CURRENT SESSIONS_HIGHWATER USERS_MAX

           0                0              204                248         0

 

There seems to be a contradiction here: 300 sessions in init.ora; sessions_highwater at 248, and Oracle not allowing connections because the maximum has been reached.  

Has anybody encountered this problem before. Is there a "simple" reason for this erratic behavior?  

Management is looking for an answer as to why this has happened. Thanks for any input!  

Sam Bootsma

sbootsma_at_gbrownc.on.ca <mailto:sbootsma_at_gbrownc.on.ca>  

--

Please see the official ORACLE-L FAQ: http://www.orafaq.net
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Author: DENNIS WILLIAMS
  INET: DWILLIAMS_at_LIFETOUCH.COM

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