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Projects do testing of their code muliplte times before they move their code to production. Once the test JCLs are created. From the second run, we need to just change few qualifiers of the DSN and dates in all the JCLs. The conevntional method is enter each member of the JCL PDS and make the changes. If you are sure that you are gonna make common changes in all the members then go ahead and use the below technique.

1. Open FILE-AID
2. Option 3 UTILITIES
3. Option 6 SEARCH/UPDATE
4. Provide details as present in Below Screen
 
 
5. If you want to select specific members in PDS, provide “Y” at the option  “Display member selection list ===>” or else change it to “N”
 
6. Enter the data that you want to edit (00010101) from after CO and new data to be present (99991231) after EA as shown in the screen. And Press ENTER.
 
 
7. And then press PF3. The new screen will list out all the changes that will happen if you update.
 
8. Press PF3. In New screen, Provide “Y” at the field “Perform update           ===>” if you would like to perform Update. And press Enter.

Important SQL CODES and ABEND CODES
SORT JOIN – TO JOIN TWO FILES BASED ON A KEY
KNOW YOUR MAINFRAME
REXX – INITIAL SETUP
SAS – SAMPLE PROGRAM
CA DISPATCH – Useful Commands
Locate the INVALID data in a field using FILE AID
File-Aid Relational Operators, Data Types
Xpediter – Batch Setup
FILE AID – VIEW TIP
FILEAID TIPS
EDIT PDS USING FILE-AID – FAST MODE
VSAM – KEYS
Comparison of ESDS, KSDS, RRDS, VRRDS, and linear data sets
VSAM OPEN CLOSE I/O RETURN CODES
VSAM INTERVIEW QUESTIONS
VSAM TIPS
 
 
 
 
 
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