RE: mod_jk connection problem after couple of days or a week

[Jonathon Reeve <JR...@msxi-euro.com>]

Hi all,

Don't know if anyone remembers my original mail about this from
20/1/06, but it's just happened again. I've pasted the section where the
connector went nuts below (at end of mail). This is the first thing to
appear in mod_jk's log. Then, about 30 seconds later, The JBoss server
on the same machine suddenly starts throwing "java.sql.SQLException:
ORA-12571: TNS:packet writer failure", which happens when it can't
connect to the database. It's like sockets on the machine have now
stopped working properly.

Our workers.properties used to have just this line for this worker
(when we initially set up the machine and got these issues):

worker.eOrig.port=8991

Now it has these:

worker.eOrig.port=8991
worker.eOrig.cachesize=50
worker.eOrig.cache_timeout=600
worker.eOrig.socket_keepalive=1
worker.eOrig.recycle_timeout=300

We figured we'd try setting a few to see if it helped, but it makes no
difference (not really suprised but it was worth a shot). Some of them
are probably a bad idea but we had nothing to lose so we thought we'd
try them.

Last time I posted this one person had the same issue, but no-one had
an answer as to why it does this. Any ideas people? At this rate we're
gonna be back to the old connector very soon. If there are any
particular files that would be of use let me know.

Thanks

Jon Reeve
Systems Developer

[Wed Feb 01 13:58:27 2006] [error] jk_ajp_common.c (1026): ERROR: can't
receive the response message from tomcat, network problems or tomcat
(127.0.0.1:8991) is down -53
[Wed Feb 01 13:58:27 2006] [error] jk_ajp_common.c (1503): Tomcat is
down or refused connection. No response has been sent to the client
(yet)
[Wed Feb 01 13:58:27 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=0
[Wed Feb 01 13:58:27 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=1
[Wed Feb 01 13:58:44 2006] [error] jk_ajp_common.c (1026): ERROR: can't
receive the response message from tomcat, network problems or tomcat
(127.0.0.1:8991) is down -53
[Wed Feb 01 13:58:44 2006] [error] jk_ajp_common.c (1503): Tomcat is
down or refused connection. No response has been sent to the client
(yet)
[Wed Feb 01 13:58:44 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=0
[Wed Feb 01 13:58:44 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=1
[Wed Feb 01 13:58:44 2006] [error] jk_ajp_common.c (961): Can't receive
the response message from tomcat, network problems or tomcat is down
(127.0.0.1:8991), err=-53
[Wed Feb 01 13:58:44 2006] [error] jk_ajp_common.c (1528): Tomcat is
down or network problems. Part of the response has already been sent to
the client
[Wed Feb 01 13:58:44 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=1
[Wed Feb 01 13:58:44 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=2
[Wed Feb 01 13:58:45 2006] [error] jk_ajp_common.c (1026): ERROR: can't
receive the response message from tomcat, network problems or tomcat
(127.0.0.1:8991) is down -53
[Wed Feb 01 13:58:45 2006] [error] jk_ajp_common.c (1503): Tomcat is
down or refused connection. No response has been sent to the client
(yet)
[Wed Feb 01 13:58:45 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=0
[Wed Feb 01 13:58:45 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=1
[Wed Feb 01 13:58:45 2006] [error] jk_ajp_common.c (1026): ERROR: can't
receive the response message from tomcat, network problems or tomcat
(127.0.0.1:8991) is down -53
[Wed Feb 01 13:58:45 2006] [error] jk_ajp_common.c (1503): Tomcat is
down or refused connection. No response has been sent to the client
(yet)
[Wed Feb 01 13:58:45 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=1
[Wed Feb 01 13:58:45 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=2
[Wed Feb 01 13:58:45 2006] [error] jk_ajp_common.c (1026): ERROR: can't
receive the response message from tomcat, network problems or tomcat
(127.0.0.1:8991) is down -53
[Wed Feb 01 13:58:45 2006] [error] jk_ajp_common.c (1503): Tomcat is
down or refused connection. No response has been sent to the client
(yet)
[Wed Feb 01 13:58:45 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=2
[Wed Feb 01 13:58:45 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=3
[Wed Feb 01 13:58:45 2006] [error] jk_ajp_common.c (1758): Error
connecting to tomcat. Tomcat is probably not started or is listening on
the wrong port. worker=eOrig failed
[Wed Feb 01 13:58:45 2006] [info]  mod_jk.c (1985): Service error=0 for
worker=eOrig
[Wed Feb 01 13:58:45 2006] [error] jk_ajp_common.c (1026): ERROR: can't
receive the response message from tomcat, network problems or tomcat
(127.0.0.1:8991) is down -53
[Wed Feb 01 13:58:45 2006] [error] jk_ajp_common.c (1503): Tomcat is
down or refused connection. No response has been sent to the client
(yet)
[Wed Feb 01 13:58:45 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=0
[Wed Feb 01 13:58:45 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=1
[Wed Feb 01 13:58:46 2006] [error] jk_ajp_common.c (1026): ERROR: can't
receive the response message from tomcat, network problems or tomcat
(127.0.0.1:8991) is down -53
[Wed Feb 01 13:58:46 2006] [error] jk_ajp_common.c (1503): Tomcat is
down or refused connection. No response has been sent to the client
(yet)
[Wed Feb 01 13:58:46 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=0
[Wed Feb 01 13:58:46 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=1
[Wed Feb 01 13:58:46 2006] [error] jk_ajp_common.c (1026): ERROR: can't
receive the response message from tomcat, network problems or tomcat
(127.0.0.1:8991) is down -53
[Wed Feb 01 13:58:46 2006] [error] jk_ajp_common.c (1503): Tomcat is
down or refused connection. No response has been sent to the client
(yet)
[Wed Feb 01 13:58:46 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=1
[Wed Feb 01 13:58:46 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=2
[Wed Feb 01 13:58:46 2006] [error] jk_ajp_common.c (1026): ERROR: can't
receive the response message from tomcat, network problems or tomcat
(127.0.0.1:8991) is down -53
[Wed Feb 01 13:58:46 2006] [error] jk_ajp_common.c (1503): Tomcat is
down or refused connection. No response has been sent to the client
(yet)
[Wed Feb 01 13:58:46 2006] [info]  jk_ajp_common.c (1721): Receiving
from tomcat failed, recoverable operation attempt=2
[Wed Feb 01 13:58:46 2006] [info]  jk_ajp_common.c (1749): Sending
request to tomcat failed,  recoverable operation attempt=3
[Wed Feb 01 13:58:46 2006] [error] jk_ajp_common.c (1758): Error
connecting to tomcat. Tomcat is probably not started or is listening on
the wrong port. worker=eOrig failed
[Wed Feb 01 13:58:46 2006] [info]  mod_jk.c (1985): Service error=0 for
worker=eOrig


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