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IPCLW Messages: op bsnd failed with Work Request Flushed Error wrid nnn.nnnn verr nnn qpn nnnn Pend n (Doc ID 2698194.1)

Last updated on SEPTEMBER 15, 2020

Applies to:

Oracle Cloud Infrastructure - Exadata Cloud Service - Version N/A to N/A [Release N/A]
Information in this document applies to any platform.


1. Several sessions are waiting for gc waits, but the waits are not for a long time (more than a 1 min) still we can see sessions being blocked like:

which is waiting for 'gc cr request' with wait info:
p1: 'file#'=0x5e
p2: 'block#'=0x8a29
p3: 'class#'=0x1
time in wait: 0.395298 sec
timeout after: never
wait id: 71
blocking: 95 sessions

2. There are sessions waiting for different file#/block#.

3. The trace files for the LMS* or CR* are dumping continuously messages produced in the IPCLW layer like:

*** 2020-07-10T03:10:18.681235+00:00 (CDB$ROOT(1))
IPCLW:[0.45]{E}[WAIT]:RC: [1594350618480704]op bsnd failed with Work Request Flushed Error wrid 108.3808851 verr 249 qpn 28548 Pend 1
2020-07-10 03:10:18.856 : kjblpsch2[0xe306f.2fe @0x1f5fa55c0][reqid 3231][sender 4.4]
IPCLW:[0.46]{E}[WAIT]:RC: [1594350618856499]op zsnd failed with remote invalid request error wrid 114.3727478 verr 138 qpn 28562 Pend 2
IPCLW:[0.47]{E}[WAIT]:RC: [1594350618856499]op zsnd from PID{XRC://<IP ADDRESS>:25148 [ZCPY ASYNC SEND] ts:2502084654 xd1:0x00000ba8 xd2:0xa88c} to PID{XRC:// [ZCPY] ts:229525285 xd1:0x000334c8 xd2:0xaa76} seqno 1203508537 srq 210120 cbuf 0x4002835b1eb0 cnh 0x4000ae6ca8c0
IPCLW:[0.48]{E}[WAIT]:RC: [1594350618856499]op bsnd failed with Work Request Flushed Error wrid 58.11815 verr 249 qpn 28562 Pend 1
2020-07-10 03:10:19.388 : kjblpsch2[0xecad8.185 @0x187f0beb8][reqid 3117][sender 4.4]





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