May 2001
Intermediate to advanced
1088 pages
30h 13m
English
Content preview from Special Edition Using Java™ 2 Enterprise Edition
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Troubleshooting
CMT Problems
| Q1: | Why do I get an error when I call setRollbackOnly? |
| Your method probably has a transaction type of Supports, Never, or NotSupported. You can only roll back a transaction when the method's transaction type is Required, RequiresNew, or Mandatory. | |
| Q2: | Why can't I call getUserTransaction when I use CMT? |
| By using CMT you have agreed that you don't want to manage your bean's transaction scope. You shouldn't be using the UserTransaction object anyway. |
BMT Problems
| Q1: | Why do I get an error when I call setRollbackOnly on the SessionContext object? |
| When using BMT, you should use the setRollbackOnly in the UserTransaction object (which you get by calling getUserTransaction on the SessionObject). | |
| Q2: | Isn't the BMT a subway? |
| Yes, the ... |
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.