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| problem with COM+ |
| Forum: Development |
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Read Only Forum Back to Development All Forums |
Displaying Posts 1 through 2 of 2 |
This is an archived static copy of ActiveWin.com. |
| #1 By 135 (208.50.201.48) at Sunday, August 11, 2002 02:59:46 PM |
|
There are a couple of known issues here...
First of all on the Oracle side. You want to be at the more recent version of Oracle 8i, both on server and client. I think it's like 8.1.7.5 or something like that. The 8.1.6 stuff just doesn't work well. On the ADO side, MDAC 2.7 fixes a number of issues and has been surprisingly stable. On the VB side. Make sure you have unattended execution checked on your COM component projects. The default was changed with SP5 I believe, but just in case. Now as far as COM+ goes... It doesn't work well with VB, especially if your database queries take more than a few seconds to execute. There are threading issues relating to the use of STA and the new threadpool introduced in Win2k. First step would be to make sure your components aren't going into infinite loops of some sort. Once that is verified, you may wish to turn on the MTS thread emulation. This requires installing the COM+ rollup hotfix. I suspect SP3 has this in it. This will change the behavior to the old NT4 way which is preferable for VB components. send me email if you want more information. I have quite a bit of experience with COM+ in an Oracle environment. |
| #2 By 135 (209.180.28.6) at Friday, December 27, 2002 05:52:28 PM |
| There are incompatibilities even when upgrading from older MDAC to newer versions. That is, some coding functions that worked in say 1.5 didn't work in 2.0, and even things in 2.0 that didn't work in 2.5. It's gotten better upgrading thru 2.6 to 2.7, etc., but... One basic lesson is that the version of MDAC on your build machine has to be the same version or older than what is on your deployment machine. You generally can't have a newer version, because of those type mismatch errors. If it's internal development, life is easier as you can maintain a build machine that looks like your deployment machine. Always follow good configuration management practices, so you know what it takes to build the machine to this configuration. I've not had to deal with shipping ADO based components to third parties, that would suck I think. |
