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working of LTPA

Posted on 2008-10-12
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Last Modified: 2013-12-11
I ran into issue where Websphere dmgr gave the error message LTPA token expired and resync failed message appeared  in the nodeagent log

ADMS0005E: Unable to generate synchronization request:
javax.management.JMRuntimeException: ADMN0022E: Access denied
for the getRepositoryEpoch operation on ConfigRepository MBean
due to insufficient or empty credentials.

is the issue because of LTPA token expire? what needs to be done to solve the issue

can someone please explain me how does LTPA token concept and why expiry of the token results in the stopping of the appservers and nodeagent.
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Question by:chinky2377
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HonorGod earned 100 total points
ID: 22705512
LTPA = Lightweight Third-Party Authentication

http://en.wikipedia.org/wiki/IBM_Lightweight_Third-Party_Authentication

Apparently, a token was created that had an expiration date, and that
date/time has come and gone.  Therefore, the token is no longer valid.

This page should help you correct the issue:

http://publib.boulder.ibm.com/infocenter/wasinfo/v6r1/index.jsp?topic=/com.ibm.websphere.base.doc/info/aes/ae/usec_authmechandexpire.html
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by:HonorGod
ID: 22705534
The AppServers (and nodeagents, which are also AppServers) stop because
authentication can no longer be performed, and the AppServers can't "trust"
any application that uses the referenced "token"
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Expert Comment

by:siddharth1747
ID: 22780130
Running into same issue between nodeagent and dmgr, re-generated ltpa tokens for dmgr, did a manual resync of nodeagent (successful output) and stopped/re-started the dmgr and nodeagent, still complaining of a lack of trust between nodeagent and dmgr running on same physical host on AIX.....Please help....
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LVL 41

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by:HonorGod
ID: 22780484
Are you seeing any errors in the logs (e.g., certification expired)?
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LVL 41

Expert Comment

by:HonorGod
ID: 22827977
I'm sorry you didn't like the answer, thanks for the points though.

Good luck & have a great day.
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