derby running with no response

[li luo <lu...@gmail.com>]

hi everyone:
     I got a problem when I use derby to store my data. This is my
situation:
     I have an application which will insert items into a derby database
table , and the derby is running in a standalone mode. below is my derby
running 'ps aux' description:

mapred   26259  0.4  0.3 3395928 252980 ?    Sl   Sep25  24:26
/home/mapred/hadoop-v2/hadoop/bin/../../java6/bin/java -Xmx3000m -classpath
/home/mapred/hadoop-v2/hadoop/bin/../derby/lib/derby.jar:/home/mapred/hadoop-v2/hadoop/bin/../derby/lib/derbynet.jar:/home/mapred/hadoop-v2/hadoop/bin/../derby/lib/derbytools.jar:/home/mapred/hadoop-v2/hadoop/bin/../derby/lib/derbyclient.jar
org.apache.derby.drda.NetworkServerControl start -h localhost -p 1527

     My problem is: after the derby running for some days, it got no
response when the application intend to insert the db table, and I use ij to
connect the derby still fail. The java process still running and derby can
not response normally.I didn't do any special configuration for derby. Just
start it using: $DERBY_HOME/bin/startNetworkServer -h localhost -p 1527.

     What can I do to fix this? Any suggestion will be helped.

thanks
luoli

Re: derby running with no response

[Bryan Pendleton <bp...@gmail.com>]

> ij to connect the derby still fail. The java process still running and
> derby can not response normally.I didn't do any special configuration
> for derby. Just start it using: $DERBY_HOME/bin/startNetworkServer -h
> localhost -p 1527.

A good place to start is to look in the derby.log file of the Network Server
to see if there are any messages there which indicate problems.

Another thing you could try is to use 'kill -QUIT' to get a stack trace
of the Network Server process.

thanks,

bryan