[opencms-dev] Failed to write locks to database

[RuiXian BAO]

Hello Nuno,

On 1/23/08, Nuno Fernandes <npf-mlists at eurotux.com> wrote:
>
> >
> > Is your database still up and running? Can you connect to it from the
> > command line?
> >
> Yes.. It's running. When i stop and start tomcat the website works again
> but
> after sometime i see the error again and the website turns inacessible.


Have you tried the various suggestions in the following link?

http://forums.mysql.com/read.php?39,16257,16257

Best

- RuiXian


I do a processlist at that time but nothing is connected to the database.
>
> Thanks for any info.
> Nuno Fernandes
>
> > Best
> >
> > - RuiXian
> >
> >
> > org.opencms.db.CmsDbSqlException: An SQL error occurred when executing
> the
> >
> > > following query: com.mysql.jdbc.PreparedStatement at 4904c8: statement
> has
> > > been
> > >
> > > close
> > >
> > > d, no further internal information available.
> > >
> > > at
> > >
> > > org.opencms.db.generic.CmsProjectDriver.writeLocks(
> CmsProjectDriver.java
> > >
> > > :2177)
> > >
> > > at org.opencms.lock.CmsLockManager.writeLocks(CmsLockManager.java:582)
> > >
> > > at
> > >
> > > org.opencms.db.CmsDriverManager.writeLocks(CmsDriverManager.java:7920)
> > >
> > > at
> > >
> > > org.opencms.db.CmsSecurityManager.writeLocks(CmsSecurityManager.java
> :5091
> > >)
> > >
> > > at org.opencms.main.CmsThreadStore.run(CmsThreadStore.java:187)
> > >
> > > Caused by: com.mysql.jdbc.CommunicationsException: Communications link
> > > failure
> > >
> > > due to underlying exception:
> > >
> > > ** BEGIN NESTED EXCEPTION **
> > >
> > > java.io.EOFException
> > >
> > > MESSAGE: Can not read response from server. Expected to read 4 bytes,
> > > read 0
> > >
> > > bytes before connection was unexpectedly lost.
> > >
> > > STACKTRACE:
> > >
> > > java.io.EOFException: Can not read response from server. Expected to
> read
> > > 4
> > >
> > > bytes, read 0 bytes before connection was unexpectedly lost.
> > >
> > > at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997)
> > >
> > > at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2411)
> > >
> > > ..
> > >
> > > I've googled around and didn't find anything related. I'm using two
> > > machines
> > >
> > > 1 - webserver
> > >
> > > centos5 (i386)
> > >
> > > apache-tomcat-6.0.14
> > >
> > > jdk-1.6.0_03-fcs
> > >
> > > opencms 7.0.3
> > >
> > > 2 - db server
> > >
> > > centos5 (x86_64)
> > >
> > > mysql 5
> > >
> > > Any info?
> > >
> > > Thanks,
> > >
> > > Nuno Fernandes
> > >
> > >
> > > _______________________________________________
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>
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