The following two qualifiers control the journal processing direction:
/BACKWARD
Specifies that MUPIP JOURNAL processing should proceed from the end of the journal file. If the actions include /RECOVER, JOURNAL /BACKWARD restores before-images from the end-of the file back to an explicitly or implicitly specified point (the turn around point), before it reverses and processes database updates in the forward direction (the forward phase).
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/BACKWARD is incompatible with /FORWARD. |
/FO[RWARD]
Specifies that MUPIP JOURNAL processing for the specified action qualifier should proceed from the beginning of the given journal file. When processing a /RECOVER action qualifier, in certain cases, MUPIP JOURNAL may need to go before the first record of the specified journal file, that is, it can start from a previous generation journal file (see /RECOVER section for details).
If multiple journal files are specified in the command line, /FORWARD sorts the journal files within each region based on creation time and processes them starting from the earliest journal file. Unless the /NOCHECKTN qualifier is specified, /FORWARD performs checks on journal files corresponding to each region to ensure they are contiguous, both in terms of time span, as well as, transaction number span. /FORWARD errors out if it detects a discontinuity.
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/FORWARD is incompatible with / BACKWARD and /ROLLBACK. |