Processing considerations for databases from other systems

For proper utility operation, the enhanced-generic-naming (EGN) setting of the database that you are processing with IRRUT200 should be the same as the EGN setting of the system on which the utility is being executed.

To determine whether this affects you, answer these two questions:

Are you processing a live (primary or backup) data set? If you are, you need not worry about the EGN setting.
You can use the RVARY LIST command to see the RACF® data sets that are currently in use.
Is the EGN setting of the other database you are processing the same as the system EGN setting?
If it is, you need not worry about the EGN setting. To find the EGN setting of the current system, you can issue the SETR LIST command. To find the EGN setting of the database:
- Issue the BLKUPD command against the first data set in the database that you are processing. Look in the data set name table (ICHRDSNT) to determine the name of the data set.
- Read record zero by issuing the READ X'00' BLKUPD subcommand.
- List the 195th byte by issuing the LIST RANGE(194,1) BLKUPD command. If the listed value has the low-order bit on, EGN is enabled. If the bit is off, EGN is not enabled.

Using the IRRUT200 utility in a mixed EGN environment might cause a question mark (?) to be displayed as a part of a formatted index entry.