Hello Kevin,

'reconnect' does what you think - connections are silently re-connected if it 
is 
possible (i.e. outside transaction, no result sets open ...). 

Usually, a connection pool (like in Tomcat) ensures to make a rollback when
the connection is handed back from the application, so the chance that they
are eligible for a reconnect then is very high ...

Regards
Alexander Schröder
SAP DB, SAP Labs Berlin 

-----Original Message-----
From: Kevin Wilson [mailto:[EMAIL PROTECTED] 
Sent: Donnerstag, 29. September 2005 18:17
To: Maxdb (E-mail)
Subject: jdbc connections not dying off

[System Info]

App server:
        SuSE 9.1-x32 SMP (AMD)
        JSDK 1.4.2_08
        Tomcat 5.0.27
        
DB server:
        SuSE 9.2-x64 SMP (AMD)
        MaxDB 7.5.0.23

JDBC Driver:
        sapdbc-7_5_01_00.jar

I named it this to let me know which version of the db server I downloaded
the jdbc driver from.


I connect to the db using the following properties:

props.setProperty("defaultRowPrefetch", "100");
props.setProperty("defaultBatchValue", "25");
props.setProperty("isolation", "TRANSACTION_READ_UNCOMMITTED");
props.setProperty("reconnect", "on");
props.setProperty("timeout", "120"); //in seconds


Does the reconnect = on prevent connections from dying? A restart of tomcat
kills all the connections and resets back to 5 on restart but then they
slowly begin to grow in number. A look in the dbgui shows very few
connections, usually only 2 to 14 active at any given time but netstat shows
the same number of connections on both the app and db servers and they all
have a status of established.

Any ideas that could help me figure out why these connections are persisting
without any usage over a long period of time would be appreciated.

Thanks,

Kevin

-- 
MaxDB Discussion Mailing List
For list archives: http://lists.mysql.com/maxdb
To unsubscribe:    http://lists.mysql.com/[EMAIL PROTECTED]


--
MaxDB Discussion Mailing List
For list archives: http://lists.mysql.com/maxdb
To unsubscribe:    http://lists.mysql.com/[EMAIL PROTECTED]

Reply via email to