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Problem using UserTransactions with IAS (OC4J)

 
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Hi,

I do this:

javax.naming.InitialContext context = new javax.naming.InitialContext();
UserTransaction ut =
(UserTransaction) context.lookup("java:comp/UserTransaction");

ut.begin();


but occur this:

java.lang.NullPointerException
at com.sun.jts.jta.TransactionManagerImpl.<init>(TransactionManagerImpl.java :113)
at com.sun.jts.jta.TransactionManagerImpl.getTransactionManagerImpl(TransactionMan agerImpl.java:102)
at com.sun.jts.jta.UserTransactionImpl.init(UserTransactionImpl.java:173)
at com.sun.jts.jta.UserTransactionImpl.begin(UserTransactionImpl.java:49)
at com.sun.enterprise.distributedtx.UserTransactionImpl.begin(UserTransactionImpl. java:66)

When I'm using JTA with OC4J (stand-alone), no problems occur.

What have I missed? (I'm using Oracle9iAS)
 
author & internet detective
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Manfrini,
Welcome to JavaRanch!

Check that you are pointing to the same driver in the standalone/app server versions. Also, what kind of code is calling the app server class? Servlet? EJB?
 
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