I found the answer here. We have NoTxSeparatePools: set to true for the oracle
connections, so this is normal operation... sigh.
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Is there a firewall between your app and db server? If so (and maybe even if
not) try changing your tcp_keepalive_time setting. It's a registry setting,
and I don't know how to set it (I'm a Unix guy, sorry) but a google search
should turn it up pretty quick.
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First off, we're running JBoss 3.2.6, Oracle 9i, and PostgreSQL 7.4.7 on RHEL3
in production and staging, the environment having the following probem...
JBoss is occasioally failing to connect to the Oracle servers. Setting the
kernel tcp_keepalive_time to < firewall timeout was recently done t