-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Marko,
On 11/19/13, 10:16 AM, marko lugarič wrote: > About using useEquals="false" property I guess we defined when we > started using this pool. After reading the documentation i guess it > is better to leave it out (it has no effect on the test - i tested > it). Okay. Let me know if you discover a reason to set that option again. > We dont have long running queries because there is not much data > and all operations are fast (the longest one are ranging from 1 to > 2 seconds: i used slowqueryinterceptor and sql server profiler). > The test always starts with empty database. Ok. > I never got any abandoned messages in the stdout or catalina.out > (logabandoned set to true) - I put everything that is not from our > application and is at least on INFO level to catalina.out. I added > org.apache.tomcat.jdbc.pool package to logs on TRACE level and the > only line that is repeating (5 times) is: 2013-11-19 15:25:24,764 > DEBUG [main] org.apache.tomcat.jdbc.pool.PooledConnection > connectUsingDriver(): Instantiating driver using class: > com.microsoft.sqlserver.jdbc.SQLServerDriver > [url=jdbc:sqlserver://*****;databaseName=chiTestDB] That will be filling the pool. It's clear that the pool is emptying and never re-filling, or you'd get more of the above messages. > Dont know if there is really that little logging in connection > pool. In that case debugging looks like the only option? Perhaps, but I think you might be able to get more information from the pool. > About C3P0 pool:we are under the impression that > org.apache.tomcat.jdbc.pool is the only way to go (production > quality) after reading The Tomcat JDBC Connection Pool page (after > your comment i guess this is not true and commons-dbcp is > production quality alternative?). IMO the Tomcat-pool documentation overstates the awfulness of the dbcp-based pool. We use it for production and it works just fine. We've never had a problem with the pool that we didn't cause by our own bad webapp code (e.g. not returning connections) or due to long-running queries triggering the "abandoned" alarms. OTOH, our site does not run an enormously-high transaction rate, either. > So since this did not work for us we started looking for > alternative and C3P0 pooped up in connection pool comparisons or in > some stackoverflow thread. Just note that C3P0 is self-described "beta" software. So, back to the problem: how long does your test run? Do you allow the server to cool-down after your tests? I'm wondering if you are shutting-down the server before it has a chance to complain about the abandoned connections. I've never used Tomcat-pool, so I'm not exactly sure what to expect, but the abandoned stuff should probably work exactly as described in the documentation, and roughly equivalently to the dbcp-based pool. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJSjBHIAAoJEBzwKT+lPKRYQ4AQALKwD6/Cko6t7di8oXZS8sKO pdHc2AQhrPbg95stygZiBm8lH4ds7RhwslD7JcWafSUfln/smLJO0gaV+M3PNDzX gQs/zqZyHtEW4vD2oIiL+CY/I0kbAON3tRbXFBjfJKikeINiIrTYGvm8h2dkhq4X WLijKrsh/qy96RkmUYPd0o1RsmraYCeGdSNpA96vycgrb89YHiJj07BkinKdhxTQ 903huox7ZspSGR0bl/+zEchHKj5AO9D9QELas6Z3qGwd+O7A5rxcX5YHsEXkNX6z mTwvAHzobdLXtu7LS6i+td46hFd0QurutnhrOAIZpoHNz7kItRZGDxYB296A5lY/ xdOzGXKMMaTM854hvLuSPy6zkU2S235+KEA6sVi9HpNtP42yoPbdJfM3thHcKrxB Zm/8z6DrMtHFXBRbCFE7PGds9tymCvZx3/n/Zv5a6jm2iSEOLcSSKGnvQG663029 l2XEGQyZufo+YsY9kQN+zxwSdbBl381PC8YXB+Dh2VR+LYaEuJqpxIkJjR+gIdiT JhXm4qSAYVsPDesG7GwXMwY9oFfpVvOzvv8KbH1AM/GaiLBLclTmHWZ8xw+alD7i HlR0M9gJ2dw6x6hYbv+wguBksqLxhLFOe+j6rekd7esyMP71nZh4TT4rf+r4XrGe 5RkJAULb0vE+ipAgZT/P =Vjf7 -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
