hello,
I found from my thread dump that 80% of my thread are
at the following stage, waiting to lock
PoolableConnectionFactory. This is the cause of my
Tomcat hanging! Do I need to reconfigure my
server.xml?
<parameter>
<name>maxIdle</name>
<value>10</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>150</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>oracle.jdbc.driver.OracleDriver</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>
<parameter>
<name>removeAbandoned</name>
<value>false</value>
</parameter>
<parameter>
<name>removeAbandonedTimeout</name>
<value>60</value>
</parameter>
<parameter>
<name>logAbandoned</name>
<value>true</value>
</parameter>
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>username</name>
<value>nokia</value>
</parameter>
<parameter>
<name>password</name>
<value>pswpnokia</value>
</parameter>
<parameter>
<name>validationQuery</name>
<value>select count(*) from
dual</value>
</parameter>
<parameter>
<name>timeBetweenEvictionRunsMillis</name>
<value>60000</value>
</parameter>
<parameter>
<name>numTestsPerEvictionRun</name>
<value>3</value>
</parameter>
<parameter>
<name>minEvictableIdleTimeMillis</name>
<value>120000</value>
</parameter>
Following is the extract from thread dump:
"http80-Processor228" daemon prio=1 tid=0x085a94d0
nid=0x275b waiting for monitor entry
[acdff000..acdff8d8]
at
org.apache.commons.dbcp.PoolableConnectionFactory.validateObject(PoolableConnectionFactory.java:316)
- waiting to lock <0x4d107d78> (a
org.apache.commons.dbcp.PoolableConnectionFactory)
at
org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:833)
at
org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:140)
at
org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:518)
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