The overall transaction (GTT) and service channel timeout (TPETIME)

Hi all

And thanks in advance.

* Tuxedo 8.1 and 10 on Solaris, AIX, and Linux.

Consider the following scenario:

3 services are involved S1, S2, S3.

TRANSCENDING = Y (for all services)

S1 - visits from its TMQFORWARD service (/ Q) then call S2 with TPNOBLOCK.
S2 - receive calls for S1 service, then call S3 with TPNOTRAN.
S3 - times out.

Example:
/ Q > TMQFORWARD-> S1-> tpcall (TPNOBLOCK)-> S2-> tpcall (TPNOTRAN)-> S3 (timeout)

In this scenario, TMQFORWARD is the beginner of the overall transaction and therefore, it is responsible of committing or rolling back according to the (tpreturn) return code, it works very well.
I.e. back code path is:->->-> TMQFORWARD S1 S2 S3

But, on the case of the time-out period, the order is backwards:
That is the timeout order is: TMQFORWARD then S1 and S2 and S3.

Our question is whether TMQFORWARD is also responsible for the abandonment of the transaction for all services of string in the case of timeout?

Or if each chain services must call abandon for the case of timeout?

Warning in the ULOG:
LIBTUX_CAT:1397: WARN: failure of tpreturn transaction processing

Thank you very much
Tech dims

Hello

Once a Tuxedo transaction times out, no more calls on behalf of this transaction will succeed. Also, if TMQFORWARD has launched the operation, it is the responsibility of the appellant tpcommit() or tpabort() and will do.

Regarding who should call tpabort(), only the initiator of the transaction may call tpabort(). So if TMQFORWARD was set to launch the operation, none of the services he needs to call tpabort(). They will receive an TPEPROTO error if they try to abandon the transaction as Tuxedo requires the semantics of transaction enabled, which means that only the initiator can end (successfully or unsuccessfully) the transaction.

Also, I'm not sure what you mean when you say that the order is backwards?

Kind regards
Todd little
Chief Architect of Oracle Tuxedo

Tags: Fusion Middleware

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