HI??thank you for read this mail??In our product env??we get exception??
Caused by: org.apache.tomcat.jdbc.pool.PoolExhaustedException:
[-cmd[system_intergration.enn_portal_login]-ip[10.11.87.126]] Timeout: Pool
empty. Unable to fetch a connection in 30 seconds, none available[size:300;
busy:66; idle:0; lastwait:0].
the busy 66 and idle 0 is very lower than maxsize 300.
we find threads block at pool return??213 occur??and borrow??226 occur?? ??the
jstack like(i cannt find which thread holds 0x00000006ea1415d8)??
1?? java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000006ea1415d8> (a
java.util.concurrent.locks.ReentrantLock$NonfairSync)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
at
java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
at
org.apache.tomcat.jdbc.pool.FairBlockingQueue.offer(FairBlockingQueue.java:95)
at
org.apache.tomcat.jdbc.pool.ConnectionPool.returnConnection(ConnectionPool.java:900)
at
org.apache.tomcat.jdbc.pool.ProxyConnection.invoke(ProxyConnection.java:100)
at
org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109)
at
org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.invoke(AbstractCreateStatementInterceptor.java:61)
at
org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109)
at
org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.invoke(AbstractCreateStatementInterceptor.java:61)
at
org.apache.tomcat.jdbc.pool.interceptor.ResetAbandonedTimer.invoke(ResetAbandonedTimer.java:63)
at
org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109)
at
org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.invoke(AbstractCreateStatementInterceptor.java:61)
at
org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109)
at
org.apache.tomcat.jdbc.pool.TrapException.invoke(TrapException.java:41)
at
org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109)
at
org.apache.tomcat.jdbc.pool.DisposableConnectionFacade.invoke(DisposableConnectionFacade.java:80)
at com.sun.proxy.$Proxy20.close(Unknown Source)
at com.x.commons.database.tomcat.TomcatPoolImpl.returnConnection(qk:203)
2?? java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000006ea1415d8> (a
java.util.concurrent.locks.ReentrantLock$NonfairSync)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
at
java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
at
org.apache.tomcat.jdbc.pool.FairBlockingQueue.poll(FairBlockingQueue.java:242)
at
org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:613)
at
org.apache.tomcat.jdbc.pool.ConnectionPool.getConnection(ConnectionPool.java:188)
at
org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:128)
at com.x.commons.database.tomcat.TomcatPoolImpl.getConnection(qk:149)
