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Allow Read Only Sharing on HADR while Catalog updates
We are trying to use HADR Read only Sharing to allow ad-hoc query against a 4Tb transactional database. The standby should allow us to reduce the impact of ah-hoc business queries.The application is a vendor supplied document storage and retrieval...
aï¼‰HADR replay master contends with replay worker on queue, and lots of latch contention were observed.bï¼‰HADR replay has IO performance issue. Lots of random IOs were observed, and there should be some sort of prefetch IO to improve performance.
Tablespace reports rollforward pending after an HADR takeover report success
Banco do Brasil built a DR site and deployed a DB2 Purescale with HADR between these sites.HADR is in peer state. Then customer perform a takeover to switch HADR roles between sites.After the takeover finished successfully we tried to activate the...
Improve ADMIN_MOVE_TABLE REORG Process to not Invalidate Application Packages
24x7 Application in DB2 LUW using packages. REORG of a large table is an issue. The best approach would be to use AMT but the rename causes all application packages to be mark invalid. This does not work for a 24x7 application. Online REORGE p...
Manually confirm whether to switch before TSAMP+HADR automatically switches
In the TSAMP+hadr environment, in the event of a failure, TSAMP will directly switch the active/standby relationship. Sometimes, it may solve the A machine failure recovery time, especially the AB machine transmits a large transaction log.Therefor...
Some SQL could trigger the HADR replay-only window, and terminate the connection of the read only appplicationin the standby
SPDB use blow SQL in one of the application. those SQL could trigger the HADR replay-only window, and terminate the connection ot eh read only applicaiton in the standby side. drop tableã€create tableï¼ˆinclude PARTITION BY RANGEï¼‰ã€drop ...
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