Loos connection trougth a firewall between oracle server an client after 10 minutes

hello,
i do loos the connection between oracle server an client, because the firewall is between. The firewall will close non active connections an ports after 10 minutes. Only port of one site is clost after 10 minutes then, other site let the port open.
Shares to the the server do in not loos. Only connection to oracle. What can i do !!!!
Oracleversion ist 8.0.6
OS: Windows NT 4.0 and SP5
Thanks Frank

I had the same problem and I guess you are also hitting the firewall timeout problem... you can enable Oracle DCD (dead connection detection) by setting sqlnet.expire_time in $ORACLE_HOME/network/admin/sqlnet.ora appropriately. This solution I got from http://asktom.oracle.com.
I tried setting the expire_time to 50 minutes less than firewall time-out (which is 60 minutes) but it didn't worked, right now i am trying to figure out what else can cause the problem (I am using Oracle connection pool).... but I think above solution may solve your problem
hello,
i do loos the connection between oracle server an client, because the firewall is between. The firewall will close non active connections an ports after 10 minutes. Only port of one site is clost after 10 minutes then, other site let the port open.
Shares to the the server do in not loos. Only connection to oracle. What can i do !!!!
Oracleversion ist 8.0.6
OS: Windows NT 4.0 and SP5
Thanks Frank

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