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issue DISPLAY BLOCKERS instead of DISPLAY CLAIMERS when DRAIN timeout
Currently when DRAIN fails during REORG, a DISPLAY CLAIMERS is issued. The draw back is there is no "age" information, so user does not know which thread is the blocker, because the claimer could also be waiter.
Our company uses DB2 zOS almost exclusively for dynamic SQL workloads. Our management expects that DB2 zOS also has high availability regarding DDL changes in this application szenario. If you intend to perform DDL changes in this environment duri...
Global Variables: A global variable can be created with a default value. Each session that uses it will then instantiate a version of that global variable, with the default value and any change in the value is limited in scope to its unit-of-work....
almost 2 years ago
in Db2 for z/OS
Not under consideration
Db2 can extract z/OS - LPAR related info from RMF when ZOSMETRICS ZPARM is enabled. However for this to work in a sysplex environment it is required that EVERY member in the sysplex has the Db2 SDSNLINK library in the linklist , regardless of whet...
Preventing manual Stop/Start of a workfile after space issue
We had a space allocation failure in DSNDB07. After the storage failure has been relieved one of our batch job was crashing with reason 00D70011 as the DSNDB07 extend was flagged by DB2 WACTPUNAV bit as not usable. We finally had to manually Stop/...
about 1 year ago
in Db2 for z/OS
Planned for future release
Create INDEX and SKPT lock. DDL and continuous availability.
Working in a banking 24x7 environment without any maintenance window our concurrency issues with DDL changes are increasing more and more everyday as our workload increases. There are some concurrency problems that we think it should value the eff...
Allow for "OPTIMIZE FOR n ROWS" to be added to DELETE, UPDATE Statements
OPTIMIZE FOR 1 ROW can be added to SELECT SQL. One reason may be to influence the optimizer to chose one index over another, or to not perform a SORT with List Prefetch Adding OPTIMIZE FOR 1 ROW to a DELETE statement results in an error: EXPLAIN A...
Db2 z/OS limitations with ALTER TABLESPACE MOVE TABLE
I love the upcoming FL508 and this new availability even though I have not used it. Looking deeper into the Knowledge Center there seems to be some limitations that I would like to see resolved.
The two items are:
a) Exist in the same data...
Request for RUNSTATS SHRLEVEL REFERENCE with SAMPLE to update RTS TOTALROWS
Recovery to PIT or to current, and non-standard recovery methods such as DSN1COPY or DF/SMS dataset DUMP/RESTORE from flashcopy backups can leave TOTALROWS set to 0, NULL or invalid values. Trying to run something like a REBUILD index relies on TO...
alternate name for special register CURRENT APPLICATION COMPATIBILITY > APPLCOMPAT
is it possible to introduce alternate name or short version of "CURRENT APPLICATION COMPATIBILITY"? On a regular basis, we usually want to validate the applcompat of our system for informative purposes so we do: SELECT CURRENT APPLICATION COMPATIB...
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