Hello Woonsan,
Via Jconsole I had validated all my changes that were made in
context.xml. But for some reason the logs doesn't show anything about
abandoned connections in catalina.out. I am not sure at this time if its a
bug in tomcat 6 or tomcat-dbcp.jar, but threaddumps clearly show that
threads are waiting on connections from connection pool.
Thanks
Pradeep
On Mon, May 16, 2016 at 4:38 PM, Woonsan Ko <woon...@apache.org> wrote:
> Hi Pradeep,
>
> Just in case, you might want to make sure your changes were really
> applied. For example, an effective context.xml could be in
> conf/Catalina/localhost/...
> If it was applied properly, the stack trace should have shown
> o.a.c.dbcp.AbandonedObjectPool#borrowObject() as well.
>
> Regards,
>
> Woonsan
>
>
> On Mon, May 16, 2016 at 5:54 PM, pradeep reddy <pradeep....@gmail.com>
> wrote:
> > unfortunately it is not writing anything catalina.out :-(
> >
> > Thanks
> > Pradeep
> >
> > On Mon, May 16, 2016 at 3:47 PM, Christopher Schultz <
> > ch...@christopherschultz.net> wrote:
> >
> >> -----BEGIN PGP SIGNED MESSAGE-----
> >> Hash: SHA256
> >>
> >> Pradeep,
> >>
> >> On 5/16/16 5:13 PM, pradeep reddy wrote:
> >> > Hello Christopher,
> >> >
> >> > Let me post my thread dump here.
> >> >
> >> > All HTTP threads are in WAITING state.
> >> >
> >> > "http-12453-346" daemon prio=10 tid=0x00007fbd3061f800 nid=0x59d0
> >> > in Object.wait() [0x00007fbbe124f000] java.lang.Thread.State:
> >> > WAITING (on object monitor) at java.lang.Object.wait(Native
> >> > Method) at java.lang.Object.wait(Object.java:485) at
> >> > org.apache.tomcat.dbcp.pool.impl.GenericObjectPool.borrowObject(Generi
> >> cObjectPool.java:1104)
> >> >
> >> >
> >> - - locked <0x000000072b18f320> (a
> >> > org.apache.tomcat.dbcp.pool.impl.GenericObjectPool$Latch) at
> >> > org.apache.tomcat.dbcp.dbcp.PoolingDataSource.getConnection(PoolingDat
> >> aSource.java:106)
> >> >
> >> >
> >> at
> >> org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSourc
> >> e.java:1044)
> >> > at
> >> > org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.g
> >> etConnection(LocalDataSourceConnectionProvider.java:82)
> >>
> >> Yep,
> >> >
> >> that certainly looks like you are waiting for connections from
> >> Tomcat's DBCP-based pool.
> >>
> >> > <Resource name="jdbc/XXXXXDataSource" auth="Container"
> >> > type="javax.sql.DataSource"
> >> > driverClassName="oracle.jdbc.OracleDriver" url="XXXXXXXXXXX"
> >> > username="XXXXXX" password="XXXXXX" initialSize="1" maxActive="10"
> >> > minIdle="1" maxIdle="1" connectionCachingEnabled="true"
> >> > fastConnectionFailoverEnabled="true"
> >> > connectionCacheProperties="{MinLimit=1, MaxLimit=20,
> >> > InitialLimit=1, oracle.net.ns.SQLnetDef.TCP_CONNTIMEOUT_STR=3000}"
> >> > ONSConfiguration="nodes=XXXXX" validationQuery="SELECT 1 from
> >> > DUAL" removeAbandoned="true" removeAbandonedTimeout="30"
> >> > logAbandoned="true" maxWait="-1"/>
> >>
> >> That configuration looks okay to me.
> >>
> >> The "abandoned" logs are logged to stdout, so they should show up in
> >> your catalina.out file (or stdout.log if you are using a Windows Service
> >> ).
> >>
> >> Are you getting no messages about the abandoned connections?
> >>
> >> - -chris
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> >> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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> >> -----END PGP SIGNATURE-----
> >>
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