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RP/MSQ 5.0 (VMS) - V4 client receiving large messages gets 32 nulls before first message (Doc ID 775887.1)

Last updated on NOVEMBER 05, 2020

Applies to:

Oracle MessageQ - Version 4.0 and later
Information in this document applies to any platform.
Information in this document applies to any platform

Goal

Using V4.0 Client code on Windows, customer attaches to queue 195 as primary queue (SQ in QCT). Then configure
pams_get_msg with PSYM_MSG_LARGE,  and large_area_len greater than 0x8000 (32769 or greater). The first message
received has 32 nulls prepended to message. Subsequent messages are OK. If detach/reattach, again first message
received has 32 nulls prepended to message. 

If the  large_area_len less than 0x8000 (32768 or less), the error does not occur.

These must be the first clients to attach after the CLS is started. Once the CLS has received a pams_get_msg from a
client with parameters, large_area_len set below 0x8000, or without PSYM_MSG_LARGE, then all subsequent attaches by
other client processes, followed by any pams_get_msg (even with large_area_len greater than 0x8000) no longer have
this symptom for the first message receive.

Solution

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In this Document
Goal
Solution


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