My application which is using Firebird classic (2.1.1) hangs.
 There are multiple threads spawned off and all of them do inserts and
 reads and return except for one. On viewing the threads via jconsole it
 seems to be blocked on firebird's finalizer. The jconsole output is listed
 below. Can anyone throw some light on this please?
 We are using hibernate and spring and I do not see any open connections
 issue.
Thanks in advance.
Jconsole o/p:
--------------------------------
Name: Finalizer
State: RUNNABLE
Total blocked: 528 Total waited: 147

Stack trace:
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(Unknown Source)
org.firebirdsql.gds.impl.wire.XdrInputStream.read(XdrInputStream.java:242)
org.firebirdsql.gds.impl.wire.XdrInputStream.readInt(XdrInputStream.java:187)
org.firebirdsql.gds.impl.wire.AbstractJavaGDSImpl.nextOperation(AbstractJavaGDSI\
mpl.java:2099)
org.firebirdsql.gds.impl.wire.AbstractJavaGDSImpl.receiveResponse(AbstractJavaGD\
SImpl.java:2053)
org.firebirdsql.gds.impl.wire.AbstractJavaGDSImpl.iscDsqlFreeStatement(AbstractJ\
avaGDSImpl.java:1405)
- locked org.firebirdsql.gds.impl.wire.isc_db_handle_impl@c9d6ed
org.firebirdsql.gds.impl.GDSHelper.closeStatement(GDSHelper.java:314)
org.firebirdsql.jdbc.AbstractStatement.close(AbstractStatement.java:326)
- locked org.firebirdsql.jdbc.FBPreparedStatement@599060
org.firebirdsql.jdbc.AbstractStatement.finalize(AbstractStatement.java:192)
java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method)
java.lang.ref.Finalizer.runFinalizer(Unknown Source)
java.lang.ref.Finalizer.access$100(Unknown Source)
java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)
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