JDBC Threads Locking up

From: sameergn@xxxxxxxxx
Date: Fri, 15 Jun 2007 11:02:52 -0700

Hi,

We are using Apache,Tomcat 5,ojdbc14.jar,Oracle 10g based system and
observing that all 100 tomcat threads are getting stuck in following
situation.

87 threads are stuck in "waiting to lock <0x718fc270> (a
oracle.jdbc.pool.OracleConnectionEventListener)"

TP-Processor100 daemon prio=1 tid=0x5c430080 nid=0x7964 waiting for
monitor entry [0x546c2000..0x546c3868]
at
oracle.jdbc.pool.OracleConnectionEventListener.connectionClosed(OracleConnectionEventListener.java:
129)
- waiting to lock <0x718fc270> (a
oracle.jdbc.pool.OracleConnectionEventListener)
at
oracle.jdbc.pool.OraclePooledConnection.callListener(OraclePooledConnection.java:
482)
at
oracle.jdbc.pool.OraclePooledConnection.logicalClose(OraclePooledConnection.java:
445)
- locked <0x6254f030> (a oracle.jdbc.pool.OraclePooledConnection)
at
oracle.jdbc.driver.OracleConnection.logicalClose(OracleConnection.java:
2936)
- locked <0x6254f0f0> (a oracle.jdbc.driver.OracleConnection)
at oracle.jdbc.driver.OracleConnection.close(OracleConnection.java:
1454)
- locked <0x6254f0f0> (a oracle.jdbc.driver.OracleConnection)

One thread has locked "<0x718fc270> (a
oracle.jdbc.pool.OracleConnectionEventListener)" and it is waiting to
lock <0x718fc0e0> (a oracle.jdbc.pool.OracleConnectionCacheImpl).

TP-Processor45 daemon prio=1 tid=0x081cf9b8 nid=0x7d0 waiting for
monitor entry [0x562fa000..0x562fb868]
at
oracle.jdbc.pool.OracleConnectionCacheImpl.closeSingleConnection(OracleConnectionCacheImpl.java:
677)
- waiting to lock <0x718fc0e0> (a
oracle.jdbc.pool.OracleConnectionCacheImpl)
at
oracle.jdbc.pool.OracleConnectionCacheImpl.reusePooledConnection(OracleConnectionCacheImpl.java:
592)
at
oracle.jdbc.pool.OracleConnectionEventListener.connectionClosed(OracleConnectionEventListener.java:
130)
- locked <0x718fc270> (a
oracle.jdbc.pool.OracleConnectionEventListener)
at
oracle.jdbc.pool.OraclePooledConnection.callListener(OraclePooledConnection.java:
482)
at
oracle.jdbc.pool.OraclePooledConnection.logicalClose(OraclePooledConnection.java:
445)
- locked <0x62354878> (a oracle.jdbc.pool.OraclePooledConnection)
at
oracle.jdbc.driver.OracleConnection.logicalClose(OracleConnection.java:
2936)
- locked <0x62354938> (a oracle.jdbc.driver.OracleConnection)
at oracle.jdbc.driver.OracleConnection.close(OracleConnection.java:
1454)
- locked <0x62354938> (a oracle.jdbc.driver.OracleConnection)

One thread has locked <0x718fc0e0>, but it is waiting in
socketRead0(), so the lock can not released.
This stack trace is originating from while obtaining a new database
connection.

TP-Processor10 daemon prio=1 tid=0x084d4f50 nid=0x70d5 runnable
[0x5cd7c000..0x5cd7e868]
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at oracle.net.ns.Packet.receive(Unknown Source)
at oracle.net.ns.DataPacket.receive(Unknown Source)
at oracle.net.ns.NetInputStream.getNextPacket(Unknown Source)
t oracle.net.ns.NetInputStream.read(Unknown Source)
at oracle.net.ns.NetInputStream.read(Unknown Source)
at oracle.net.ns.NetInputStream.read(Unknown Source)
at oracle.jdbc.ttc7.MAREngine.unmarshalUB1(MAREngine.java:931)
at oracle.jdbc.ttc7.MAREngine.unmarshalSB1(MAREngine.java:893)
at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:375)
at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1894)
at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteFetch(TTC7Protocol.java:
1094)
- locked <0x62bb7a10> (a oracle.jdbc.ttc7.TTC7Protocol)
at
oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:
2132)
at
oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:
2015)
at
oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:
2877)
at oracle.jdbc.driver.OracleStatement.execute(OracleStatement.java:
925)
- locked <0x62bc4228> (a oracle.jdbc.driver.OracleStatement)
- locked <0x62bb7a80> (a oracle.jdbc.driver.OracleConnection)
at oracle.jdbc.dbaccess.DBAccess.setNlsParamsClient(DBAccess.java:
1680)
at oracle.jdbc.ttc7.TTC7Protocol.initNls(TTC7Protocol.java:1592)
- locked <0x62bb7a10> (a oracle.jdbc.ttc7.TTC7Protocol)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:
406)
at
oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:
521)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:325)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
- locked <0xa1efd890> (a java.lang.Class)
at java.sql.DriverManager.getConnection(DriverManager.java:140)
- locked <0xa1efd890> (a java.lang.Class)
at
oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:
171)
- locked <0x718fc1e0> (a
oracle.jdbc.pool.OracleConnectionPoolDataSource)
at
oracle.jdbc.pool.OracleConnectionPoolDataSource.getPhysicalConnection(OracleConnectionPoolDataSource.java:
149)
at
oracle.jdbc.pool.OracleConnectionPoolDataSource.getPooledConnection(OracleConnectionPoolDataSource.java:
95)
- locked <0x718fc1e0> (a
oracle.jdbc.pool.OracleConnectionPoolDataSource)
at
oracle.jdbc.pool.OracleConnectionPoolDataSource.getPooledConnection(OracleConnectionPoolDataSource.java:
63)
- locked <0x718fc1e0> (a
oracle.jdbc.pool.OracleConnectionPoolDataSource)
at
oracle.jdbc.pool.OracleConnectionCacheImpl.getNewPoolOrXAConnection(OracleConnectionCacheImpl.java:
547)
at
oracle.jdbc.pool.OracleConnectionCacheImpl.getPooledConnection(OracleConnectionCacheImpl.java:
404)
at
oracle.jdbc.pool.OracleConnectionCacheImpl.getConnection(OracleConnectionCacheImpl.java:
298)
- locked <0x718fc0e0> (a oracle.jdbc.pool.OracleConnectionCacheImpl)
at
oracle.jdbc.pool.OracleConnectionCacheImpl.getConnection(OracleConnectionCacheImpl.java:
268)
- locked <0x718fc0e0> (a oracle.jdbc.pool.OracleConnectionCacheImpl)

Did somebody ran into a similar situation? Please Help.

Thanks,
Sameer

.

Follow-Ups:
- Re: JDBC Threads Locking up
  - From: ashivaru
- Re: JDBC Threads Locking up
  - From: joeNOSPAM@xxxxxxx

Prev by Date: Re: Database tool
Next by Date: Re: JDBC Threads Locking up
Previous by thread: EJB3 with hand-coded ORM in JDBC
Next by thread: Re: JDBC Threads Locking up
Index(es):
- Date
- Thread

Relevant Pages

runningbufspace related lock-ups with md(4)/UFS/SU (PATCH ?)
... a couple tries it will lock up. ... the mdthread is stuck in "ufs" ... daemons has locked, waiting for bufspace to run down. ...
(freebsd-current)
Re: JDBC Threads Locking up
... monitor entry ... oracle.jdbc.pool.OracleConnectionEventListener)" and it is waiting to ... lock. ... driver is that internally it is calling DriverManager.getConnection! ...
(comp.lang.java.databases)
JDBC Threads Locking up
... observing that all 100 tomcat threads are getting stuck in following ... monitor entry ... oracle.jdbc.pool.OracleConnectionEventListener)" and it is waiting to ... lock. ...
(comp.lang.java.programmer)
JDBC Threads Locking up
... observing that all 100 tomcat threads are getting stuck in following ... monitor entry ... oracle.jdbc.pool.OracleConnectionEventListener)" and it is waiting to ... lock. ...
(comp.databases.oracle.server)
Re: notify / notifyAll misunderstanding
... > waiting threads and ONLY ONE gains the lock, the others go back to waiting. ... > When unlock() is called a record is removed from the set and notifyAllis ... > public void unlock{ ...
(comp.lang.java.programmer)