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Status Under review
Workspace Db2 for z/OS
Created by Guest
Created on Jul 22, 2021

Improve messaging surrounding the +20272 SQL warning in cases of a -904

A DBA was running an ALTER NOT CLUSTER. The ALTER should have converted the tablespace to table-controlled partitioning, but it encountered a -904. I have copied the output to "additional details".

In the SPUFI output, after the -904, the ALTER displayed DSNT404I with SQLCODE +20272, indicating that the tablespace was converted to Table-Controlled partitioning. However, this conversion was NOT done due to the -904.

We recently opened a ticket to address this. The programmer states that this is "working as designed" and insists that the +20272 was generated BEFORE the -904, despite the output from SPUFI showing it AFTER the -904. (I'm guessing this has to do with the way SPUFI is formatting the information?)

This is confusing, as the output of the +20272 after the -904 seems to suggest that conversion WAS completed, in SPITE of the -904. I think I see what the developer is saying, but I don't believe that +20272 should be set/returned to the user if the conversion fails, as the language/documentation implies a SUCCESSFUL conversion.

I am suggesting that Db2 do one of the following:

  • Not issue/set +20272 until any units of work that could affect the completion/rollback of the table-controlled partitioning complete successfully.

  • In the case of a -904 that causes a conversion to fail, provide some notification to the user (possibly in the ADDITIONAL INFORMATION area of the +20272??) that the conversion was rolled back, or replace the +20272 with another warning indicating conversion rollback.

  • Modify +20272 to indicate that conversion was attempted - the current syntax, "HAS BEEN CONVERTED" implies that the action was completed.

  • Modify documentation for +20272 to indicate that RESOURCE UNAVAILABLE conditions may cause a conversion to fail, despite the issue of this message/code.

Any of these solutions would likely be sufficient.

Needed By Not sure -- Just thought it was cool