| Message Text: |
Hashing algorithm used to process join |
| Cause Text: |
The hash join algorithm is typically used for longer running join queries.
The original query will be subdivided into hash join steps.
Each
hash join step will be optimized and processed separately. Access plan implementation
information for each of the hash join steps is not available because access
plans are not saved for the individual hash join dials. Debug messages detailing
the implementation of each hash dial can be found in the joblog if the query
is run in debug mode using the STRDBG CL command. |
| Recovery Text: |
The hash join method is usually a good implementation choice, however,
if you want to disallow the use of this method specify ALWCPYDTA(*YES).
Refer to Data access on DB2 UDB for iSeries: data access paths and methods for more
information about hashing algorithm for join processing. |