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2576625 - Writer connection stays alive forever, Coordinator connection stuck in sp_iqmpxglobalricheck

Symptom


On a writer, a user cancelled a request and disconnected, but the connection could still be seen in sp_iqconnection.
This connection remained alive over 1 day after the user disconnected .
On the coordinator, the transaction version V caused by this "still alive" connection, has a size of several Tb.

The Connhandle C matching the version V can be found with sp_iqtransaction run  on the coordinator.

With the zrlog enabled on the coordinator, Connhandle C is found running sp_iqmpxglobalricheck forever.


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Environment

SAP IQ 16.0

Product

SAP IQ 16.0

Keywords

 CR123456, CR#812315, 812315, Multiplex, MPX, transaction, version , KBA , BC-SYB-IQ , Sybase IQ , Bug Filed

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