No.
Runtime propagation adds columns that are in the schema but not explicitly in your design. If anything, one could argue that this degrades performance (the extra processing to make that decision). In practice, though, it's negligible.
Search found 53125 matches
- Tue Jul 26, 2005 1:31 am
- Forum: IBM<sup>®</sup> DataStage Enterprise Edition (Formerly Parallel Extender/PX)
- Topic: Using of RCP(Runtime Column Propagation)
- Replies: 3
- Views: 1524
- Tue Jul 26, 2005 1:30 am
- Forum: IBM<sup>®</sup> DataStage Enterprise Edition (Formerly Parallel Extender/PX)
- Topic: date conversion
- Replies: 27
- Views: 8143
As I said, you can customize your Palette and have it wherever you want it. It's up to you what effect the stage will have. For example, if you're reading from a delimited text file (an operation that is necessarily sequential), then running that result into a BASIC Transformer stage does not contri...
- Mon Jul 25, 2005 9:51 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: Flat File as intermediate vs Hash Table; which may be faster
- Replies: 8
- Views: 2728
For staging, where you don't need individual key-based access, a sequential file will always be substantially faster both to write and to read than a hashed file. The main reason for this is you can't sort the data by hashed file group number, since the hashing algorithms are not in the public domai...
- Mon Jul 25, 2005 9:48 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: Flat file clear and append
- Replies: 13
- Views: 3132
If you want to clear them, just change from Append to Overwrite. If you don't want to clear them, leave the setting at Append. If you only want to clear them occasionally (such as at the beginning of the month) make a copy of your job, set the rule to Overwrite, but make sure it sends no rows (use a...
- Mon Jul 25, 2005 9:43 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: Separating Extract, Transform and Load to three or more jobs
- Replies: 7
- Views: 1888
- Mon Jul 25, 2005 9:42 pm
- Forum: IBM<sup>®</sup> DataStage Enterprise Edition (Formerly Parallel Extender/PX)
- Topic: External Filter Output Column question
- Replies: 3
- Views: 1044
There's not really enough information to diagnose this one. I presume you're using an External Filter stage. Can you post the exact error or warning message that was generated? DataStage will normally insist on supplying a column because that column appears in the Columns grid. Have you tried removi...
- Mon Jul 25, 2005 9:38 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: Job Parametr and Hash Fiel name
- Replies: 9
- Views: 2605
- Mon Jul 25, 2005 9:37 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: Waiting period
- Replies: 2
- Views: 701
Welcome aboard! :D When there is one process writing to a buffer and another process draining the buffer downstream, the downstream process needs a mechanism for detecting whether something has gone wrong with the upstream process. No new rows for 10 seconds (which is a long time if you're processin...
- Mon Jul 25, 2005 9:34 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: Datastage Projects ???
- Replies: 9
- Views: 1988
- Mon Jul 25, 2005 9:33 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: STAGESTARTTIMESTAMP , STAGEENDTIMESTAMP
- Replies: 9
- Views: 1682
- Mon Jul 25, 2005 9:32 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: Routine works in designer, not when run
- Replies: 3
- Views: 875
- Mon Jul 25, 2005 9:30 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: Not Updating the Existing rows in the Database
- Replies: 6
- Views: 1141
- Mon Jul 25, 2005 9:28 pm
- Forum: IBM<sup>®</sup> Infosphere DataStage Server Edition
- Topic: Return code 141 from 'dsjob -jobstatus'
- Replies: 8
- Views: 2432
- Mon Jul 25, 2005 9:26 pm
- Forum: IBM<sup>®</sup> DataStage Enterprise Edition (Formerly Parallel Extender/PX)
- Topic: Using of RCP(Runtime Column Propagation)
- Replies: 3
- Views: 1524
Please post your reasons for believing that there are bugs. Be specific about stage types and nature of bug in each case. I usually advocate not using RCP but not because of any bug. My reason is that tools such as MetaStage can't provide usage/lineage analysis of columns that are generated "on the ...
- Mon Jul 25, 2005 9:22 pm
- Forum: IBM<sup>®</sup> DataStage Enterprise Edition (Formerly Parallel Extender/PX)
- Topic: Adding businessdays to timestamp
- Replies: 9
- Views: 1985
The point about using the BASIC Transformer stage is that the regular parallel Transformer stage does not have Iconv and Oconv available. Without these it's a really ugly problem; you will have to write your own function. As I said earlier, you need to read the timestamp as a string, pick the pieces...