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https://issues.apache.org/jira/browse/POOL-185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Thomas resolved POOL-185.
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Resolution: Invalid
No response from OP - assume this is a question for the users list.
> when continue kill all connection , Cannot get a connection.
> -------------------------------------------------------------
>
> Key: POOL-185
> URL: https://issues.apache.org/jira/browse/POOL-185
> Project: Commons Pool
> Issue Type: Bug
> Affects Versions: 1.5.5
> Environment: suse enterprise linux 11 (64 bit)
> jdk1.5.0_21 (32 bit)
> oracle 10.2.0.3(64 bit)
> commons-pool-1.5.5.jar
> commons-dbcp-1.3.jar
> configure
> <property name="driverClassName" value="oracle.jdbc.OracleDriver"/>
> <property name="url"
> value="jdbc:oracle:thin:@10.70.193.1:1521:ora10g"/>
> <property name="username" value="yh"/>
> <property name="password" value="yh"/>
> <property name="initialSize" value="9"/>
> <property name="maxActive" value="18"/>
> <property name="maxIdle" value="6"/>
> <property name="minIdle" value="2"/>
> <property name="maxWait" value="2000"/>
> <property name="validationQuery" value="select 1 from dual"/>
> <property name="testWhileIdle" value="true"/>
> <property name="testOnBorrow" value="false"/>
> <property name="testOnReturn" value="false"/>
> <property name="timeBetweenEvictionRunsMillis" value="3000"/>
> <property name="numTestsPerEvictionRun" value="2"/>
> Reporter: cauherk
>
> After program startup,continue kill all connection.Use oracle command "alter
> system kill session 'sid,#p'".
> Exception
> org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool
> error Timeout waiting for idle object
> at
> org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:114)
> at
> org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
> at test.TestConn.aa(TestConn.java:18)
> at test.TestConn.main(TestConn.java:49)
> Caused by: java.util.NoSuchElementException: Timeout waiting for idle object
> at
> org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1144)
> at
> org.apache.commons.dbcp.AbandonedObjectPool.borrowObject(AbandonedObjectPool.java:79)
> at
> org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:106)
> ... 7 more
> java.sql.SQLException: Cannot get a connection, pool error Timeout waiting
> for idle object
> at test.TestConn.aa(TestConn.java:18)
> at test.TestConn.main(TestConn.java:49)
> I debug org.apache.commons.pool.impl.GenericObjectPool.
> public synchronized void evict() throws Exception {
> assertOpen();
> if(!_pool.isEmpty()) {
> ...
> } // if !empty
> }
>
> but _pool.isEmpty() is always empty,can not run into.
> private synchronized int calculateDeficit(boolean incrementInternal) {
> int objectDeficit = getMinIdle() - getNumIdle();
> if (_maxActive > 0) {
> int growLimit = Math.max(0,
> getMaxActive() - getNumActive() - getNumIdle() -
> _numInternalProcessing);
> objectDeficit = Math.min(objectDeficit, growLimit);
> }
> if (incrementInternal && objectDeficit >0) {
> _numInternalProcessing++;
> }
> return objectDeficit;
> }
>
> calculateDeficit method is always return 0.
> So program always throw exception.
>
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