Connection handle has been closed and is unusable

[vivek_koul]

hii

im using jboss-4.0.1
im runnig some sql query in some method i have closed connections in the
finally block but still i get this error on console

12:42:07,695 INFO [STDOUT] Exception in transactionjava.lang.NullPointerException
12:42:07,695 INFO [STDOUT] java.sql.SQLException: Connection handle has been closed and is unusable

please help in this regard
thank you in advance
vivek

[phani.chavala]

Hi Guyz,

I am using jboss-4.0.3. i am experimenting with DAO patterns i wrote a program which handels all DB related operations like add, update, delete etc., For any DB operations i am unble to get the success. i am always ending with the exception stack trace.

UserDao is my Class name
createUser is my method name

14:24:13,764 ERROR [UserDao] >>>>>>>>>> SQLException In UserDao.createUser() java.sql.SQLException: Connection handle has been closed and is unusable at org.jboss.resource.adapter.jdbc.WrappedConnection.checkStatus(WrappedConnection.java:526)
at org.jboss.resource.adapter.jdbc.WrappedConnection.checkTransaction(WrappedConnection.java:513)
at org.jboss.resource.adapter.jdbc.WrappedConnection.prepareStatement(WrappedConnection.java:169)

if anybody got the solution. plz let me know it would realy boost my task.

i am getting a separate connection for each and every opperation and closing that connection after compleetion.

is this the right way of getting a new connection for each new opperation. or can i maintain a single connection for all the operations plz let me know.

Thanks
Phani.Chavala

[genman]

After connection.close, to get a new connection use DataSource.open() again.

[oenyinna]

I'm trying to keep a jdbc connection open between method calls but it seems to close automatically. How can I keep it open? I'm using Jboss 4.0.5. Thanks

[peyman]

Please send your solution here. I have the same problem.

Thanks