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Posted to users@tomcat.apache.org by János Löbb <ja...@yale.edu> on 2011/11/30 22:15:56 UTC
Connection has been abanded
Hi,
IT is Mac OSX 10.6.8
java -version
java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02-279-10M3065)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01-279, mixed mode)
tomcat is 7.0.21
database is Sybase ASE 15.0.3
We are getting this error in about every half hour or so:
java.lang.NullPointerException
Nov 30, 2011 3:21:28 PM org.apache.tomcat.jdbc.pool.ConnectionPool abandon
WARNING: Connection has been abandoned PooledConnection[net.sourceforge.jtds.jdbc.ConnectionJDBC3@40c65cd4]:java.lang.E\
xception
at org.apache.tomcat.jdbc.pool.ConnectionPool.getThreadDump(ConnectionPool.java:973)
at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:727)
at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:585)
at org.apache.tomcat.jdbc.pool.ConnectionPool.getConnection(ConnectionPool.java:174)
at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:124)
at pathology.connection.CopathDbInterface.getConnectionFromPull(CopathDbInterface.java:119)
at pathology.connection.CopathDbInterface.getConnection(CopathDbInterface.java:85)
at pathology.connection.CopathDbInterface.getConnection(CopathDbInterface.java:68)
at pathology.histology.server.DashboardServiceImpl.getBlockDashboardStatsMap(DashboardServiceImpl.java:923)
at pathology.histology.server.DashboardServiceImpl.getBlockDashboardStats(DashboardServiceImpl.java:513)
at pathology.histology.server.DashboardServiceImpl.getDashboardStats(DashboardServiceImpl.java:62)
at sun.reflect.GeneratedMethodAccessor597.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:569)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apach
Any good idea where to start troubleshooting ?
Thanks ahead,
János
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Re: Connection has been abanded
Posted by Pid <pi...@pidster.com>.
On 30/11/2011 21:15, János Löbb wrote:
> Hi,
>
> IT is Mac OSX 10.6.8
> java -version
> java version "1.6.0_20"
> Java(TM) SE Runtime Environment (build 1.6.0_20-b02-279-10M3065)
> Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01-279, mixed mode)
> tomcat is 7.0.21
> database is Sybase ASE 15.0.3
>
> We are getting this error in about every half hour or so:
>
> java.lang.NullPointerException
> Nov 30, 2011 3:21:28 PM org.apache.tomcat.jdbc.pool.ConnectionPool abandon
> WARNING: Connection has been abandoned PooledConnection[net.sourceforge.jtds.jdbc.ConnectionJDBC3@40c65cd4]:java.lang.E\
> xception
> at org.apache.tomcat.jdbc.pool.ConnectionPool.getThreadDump(ConnectionPool.java:973)
> at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:727)
> at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:585)
> at org.apache.tomcat.jdbc.pool.ConnectionPool.getConnection(ConnectionPool.java:174)
> at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:124)
> at pathology.connection.CopathDbInterface.getConnectionFromPull(CopathDbInterface.java:119)
> at pathology.connection.CopathDbInterface.getConnection(CopathDbInterface.java:85)
> at pathology.connection.CopathDbInterface.getConnection(CopathDbInterface.java:68)
> at pathology.histology.server.DashboardServiceImpl.getBlockDashboardStatsMap(DashboardServiceImpl.java:923)
> at pathology.histology.server.DashboardServiceImpl.getBlockDashboardStats(DashboardServiceImpl.java:513)
> at pathology.histology.server.DashboardServiceImpl.getDashboardStats(DashboardServiceImpl.java:62)
> at sun.reflect.GeneratedMethodAccessor597.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:569)
> at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
> at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
> at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
> at org.apach
>
>
> Any good idea where to start troubleshooting ?
The background pool monitor job is finding connections that either
weren't returned to the pool or have died somehow. The time it runs is
configurable.
Check your code for try-catch-finally bugs where the connection can
leak, if an uncaught error escapes.
Note: I have rarely had a good experience when dealing with the jTDS
drivers.
p
> Thanks ahead,
>
> János
>
>
>
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