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JavaRanch » Java Forums » Databases » JDBC
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Author

DB2 App Driver gives Null Pointer

Wade Thompson
Greenhorn

Joined: Sep 26, 2005
Posts: 2
Anybody have any ideas. Win XP, ServletExec 5.0 , Db2 Client 8.1
I have uninstalled, cleaned my class path and I get the same error after reinstalling.

java.lang.NullPointerException
at COM.ibm.db2.jdbc.app.SQLExceptionGenerator.throw_SQLException(Unknown Source)
at COM.ibm.db2.jdbc.app.SQLExceptionGenerator.check_return_code(Unknown Source)
at COM.ibm.db2.jdbc.app.DB2Connection.connect(Unknown Source)
at COM.ibm.db2.jdbc.app.DB2Connection.(Unknown Source)
at COM.ibm.db2.jdbc.app.DB2Driver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)

I have put a sys out in my code and it passes the correct connection string. It seems that between the DriverManager and the App driver, the connection string goes away. Any body seen anything like this before.
Dave Salter
Ranch Hand

Joined: Jul 20, 2005
Posts: 292

Can you show us the code you are using?
Wade Thompson
Greenhorn

Joined: Sep 26, 2005
Posts: 2
I'll pull together some of the code that is used. More info: the servlet uses connection pooling, and command line java programs that access the db via the same driver work fine.
 
Consider Paul's rocket mass heater.
 
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