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| MABeatty1978 |
 Posted: Thu Jul 16, 2015 11:44 am Post subject: Accessing Java Libraries with different user |
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Acolyte
Joined: 17 Jul 2014
Posts: 54
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I've got a java application (using Eclipse) that I wrote that works fine when running on my development box under my user name, but when I run the application using the user that will be in production, I get MQRC 4095 MQRC_MODULE_NOT_FOUND. I assume this to be a permission issue. To confirm, I exported the project and imported it into back into an instand of Eclipse using the production user. In doing so, it becomes pretty clear by all the red squiggly lines with the message "import com.ibm cannot be resolved" that this uesr is unable to access those libraries.
Any advice as to what I'm doing wrong and how to resolve? |
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| fjb_saper |
| Posted: Thu Jul 16, 2015 12:46 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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You did not specify the environment (Windows / Linux). I would say make the library path and everything underneath it Read eXecute for everybody 
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| MABeatty1978 |
| Posted: Fri Jul 17, 2015 4:26 am Post subject: |
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Acolyte
Joined: 17 Jul 2014
Posts: 54
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| Env is Linux. I changed the ownership of /opt/mqm/java/lib and the jar's beneath it, but it didn't resolve anything. |
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| fjb_saper |
| Posted: Fri Jul 17, 2015 5:05 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| MABeatty1978 wrote: |
| Env is Linux. I changed the ownership of /opt/mqm/java/lib and the jar's beneath it, but it didn't resolve anything. |
Sure but did you also set rx for the libraries there (*.so)?
And remember to do it for both /opt/mqm/java/lib and /opt/mqm/java/lib64
Or any corresponding non std directory you might have installed MQ into.
Don't change ownership... just add rx for all.
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| tczielke |
| Posted: Fri Jul 17, 2015 5:07 am Post subject: |
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Guardian
Joined: 08 Jul 2010
Posts: 941
Location: Illinois, USA
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| fjb_saper |
| Posted: Fri Jul 17, 2015 5:15 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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And by the way, when using eclipse, please create a library for the MQ jars.
You can then just add the library to your project and all the red lines should now go away...
(I don't add the jars to the classpath, I add the jars to the library.) This way if I happen to have the jars in a different path or at a different level, all I have to do is add the corresponding library to the project, an can configure the runtime execution with different versions as well depending on the libraries declared for the runtime execution....
Have fun
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| MABeatty1978 |
| Posted: Fri Jul 17, 2015 11:26 am Post subject: |
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Acolyte
Joined: 17 Jul 2014
Posts: 54
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I'm getting this from the stack:
com.ibm.mq.jmqi.JmqiException: CC=2;RC=2495;AMQ8568: The native JNI library 'mqjbnd' was not found. [3=mqjbnd]
but when I run dspmqver -p 4:
Name: IBM WebSphere MQ
Version: 7.0.1.7
CMVC Level: k701-107-111107 mqjbnd=k701-107-111107
Build Type: Production |
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| vennela |
| Posted: Fri Jul 17, 2015 11:30 am Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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I think you might have to set LD_LIBRARY_PATH
But not sure how you would do that in Eclipse |
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| MABeatty1978 |
| Posted: Mon Jul 20, 2015 5:06 am Post subject: |
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Acolyte
Joined: 17 Jul 2014
Posts: 54
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| vennela wrote: |
I think you might have to set LD_LIBRARY_PATH
But not sure how you would do that in Eclipse |
That fixed it, thatnk you! FYI, don't need to do it in eclipse, just set the path in your login profile and Eclipse will source it in when it lauches. |
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| fjb_saper |
| Posted: Mon Jul 20, 2015 1:53 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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You can also set it explicitly by using a launch profile and the JVM option:
| Code: |
#linux
-Djava.library.path=///${MQ_JAVA_INSTALL_PATH}/[lib|lib64]
#windows
-Djava.library.path=///%MQ_JAVA_INSTALL_PATH%/[lib|lib64] |
use either lib or lib64 depending on the OS and the support of your JVM.
Or if using multiple installations an absolute path and a launch profile per installation...
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| mqjeff |
| Posted: Tue Jul 21, 2015 5:48 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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or export/set it in the environment of a command shell, and then run the eclipse process from that shell.
This also allows you to sudo/r u n a s or etc. |
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| tczielke |
| Posted: Tue Jul 21, 2015 5:59 am Post subject: |
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Guardian
Joined: 08 Jul 2010
Posts: 941
Location: Illinois, USA
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Also, Linux administrators do frown upon the use of LD_LIBRARY_PATH. I believe setting that environment variable does affect any any shared object file that your process would load and would require dynamic linking.
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| vennela |
| Posted: Fri Jul 31, 2015 9:21 am Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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| If he is using Eclipse, most likely his workstation is Linux based and not Windows based and I believe that is where he is doing these settings. So, in this case my best guest is he himself is the Linux administrator |
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| tczielke |
| Posted: Fri Jul 31, 2015 9:35 am Post subject: |
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Guardian
Joined: 08 Jul 2010
Posts: 941
Location: Illinois, USA
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To clarify, the use of the LD_LIBRARY_PATH environment variable is a frowned upon practice in Linux, at least based on what I have read. You at least need to be aware of the dynamic linking risks if you use it, especially in an enterprise environment.
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