RP/TUX 8.1/TUX 9.1 - BRTHREADS=Y causes 'tmadmin' to hang while master migration on failover
(Doc ID 777817.1)
Last updated on JANUARY 19, 2018
Applies to:Oracle Tuxedo / Tuxedo / 8.1,9.1
Information in this document applies to any platform
DESCRIPTION: When enabling BRTHREADS=Y, you could reproduce a huge delay where 'tmadmin' is only waiting for replies while you try to execute the commands 'master -yes' and 'pclean <former_master_sid>'. The included test case was done on a 2CPU HP-UX 11.11 machine with only one TMUSREVT server deployed on each of both nodes and it already showed a delay of more than 10 minutes. The amount of delays changes when tuning SCANUNIT, SANITYSCAN, DBBLWAIT, BBLQUERY, and BLOCKTIME and/or deploy more servers on the machines. When tuning those parameters there is a deferral between where is the waiting time. In the test case, 'tmadmin' is mainly waiting while the first opening. You could also reproduce significant delays in 'master -yes' and 'pclean <former_master_sid>' when playing around with some UBBCONFIG parameters. When setting BRTHREADS=N, 'tmadmin' will open and execute 'master -yes' and 'pclean <former_master_sid>' without any unusual delay and the same domain will be fail-over in far less than 1 minute. CONFIGURATION: HP-UX 11.11 2CPU machine (seems not to be reproducible with only one CPU) Tuxedo 8.1 64-bit with RP309 Tuxedo 9.1
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