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If oncheck encounters a row/table is locked it immeditely returns error: ERROR: Could not obtain lock for <database>:<user>.<table> It would be useful to have an option for user to select lock wait time for example: oncheck -cDI ...
The new 14.10.FC6 feature to be able to run backups on an RSS node would be useful to reduce load on the Primary. We would like an onconfig parameter to allow backups on the RSS even when there are raw tables. We would expect the raw tables to hav...
Add metrics for reverse index scans and number of retries.
As per APAR IT37120: CONCURRENT QUERIES USING REVERSE SCAN OF INDEX WITH MANY DELETEDENTRIES MAY ENCOUNTER POOR PERFORMANCE
reverse index scans can require a retry.
Add metrics for number of reverse scans per partition and number of retries.
Clear Indication when RSS_FLOW_CONTROL or SDS_FLOW_CONTROL is actively applied
When RSS_FLOW_CONTROL or SDS_FLOW_CONTROL are set to a value other than -1 Informix will try to limit log activity on the primary server so that the secondary servers do not fall too far behind. There is no easy way to know or report on when this ...
When a checkpoint occurs on a primary it blocks the checkpoint temporaily while the checkpoint is applied to the HDR. On an RSS this can be prevented by configuring the config value RSS_NONBLOCKING_CKPT so log replay continues during checkpointing...
Enhance availability of readahead performance details
With the ubiquity of intelligent storage, the value of readahead in the Informix server is reduced and excessive readahead can be detrimental to performance. However, since the introduction of the AUTO_READAHEAD parameter and the associated change...
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