The IPC Message Queue Of A Tuxedo TMFFNAME FactoryFinder Server Will Get TPEBLOCK With Too Many Simultaneous Requests

(Doc ID 1674900.1)

Last updated on NOVEMBER 04, 2016

Applies to:

Oracle Tuxedo - Version 6.4 and later
Information in this document applies to any platform.
***Checked for relevance on 03-08-2016***

Symptoms

When using CORBA with Tuxedo, if many requests are given from client to server for finding the appropriate services, a TMFFNAME FactoryFinder server stops resolving the request from client.

 

Using the Tuxedo CORBA example for replication, which calls 256 requests of Simple service simultaneously, confirmed that the FactoryFinder stops, and there are 95 requests still in the IPC message queue of FactoryFinder.

ULOG contains messages of the following type:

GP_CAT:1095:ERROR: tppost failed when posting event eventname, tperrmsg=<TPEBLOCK - blocking condition found>, dropping the message

and

WARN: .SysMachineMsgq: SITE1 message queue blocking

 

After this incident happens, the Tuxedo application cannot even be terminated by "tmshutdown -y".

 

Cause

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