Full Restore from Full and Partial Backup Files

Products

• Roscoe

Issue/Introduction

 

How to restore the ROSLIBS when you have both full and partial backups?

Resolution

Solution:

This solution describes how to restore the ROSLIBS when you have both a full and partial also known as a "delta" backup.

Other Relevant Information:

Restoring a ROSCOE backup system consisting of full and partial backup files is a multi step process.

First, use the most current full backup file and do a full restore using the RESTORE option of LIBUTIL. Continue, by following the full restore with a series of partial restores using all of the partial backup files created since the last full backup. (The partial restores must be run in chronological order using LIBUTIL with the RESTORE and NOCLEAR options.) If the NOCLEAR parameter is not used, you will overwrite, and consequently destroy the members that were previously restored.

e.g.

Step FULLREST will restore the full backup which is in FULL.BACKUP to your ROSLIBS.  
//FULLREST    EXEC PGM=LIBUTIL,PARM='RESTORE'
//STEPLIB  DD  DSN=CAI.RO60LIB,DISP=SHR
//ROSLIB00 DD  DSN=YOUR.ROSLIB00,DISP=OLD
//ROSLIB01 DD  DSN=YOUR.ROSLIB01,DISP=OLD
//ROSLIB02 DD  DSN=YOUR.ROSLIB02,DISP=OLD
//SYSPRINT DD  SYSOUT=*
//BACKUP   DD  DSN=FULL.BACKUP,DISP=SHR
/*

STEP PARTREST will restore the partial backup which is in YOUR.DELTAx.BACKUP to the ROSLIBS. Note, that the 
Delta backups have to be restored in the sequence they were taken. The parameter "NOCLEAR" must be included 
in the parameter list.

//PARTREST    EXEC PGM=LIBUTIL,PARM='RESTORE,NOCLEAR'
//STEPLIB  DD  DSN=CAI.RO60LIB,DISP=SHR
//ROSLIB00 DD  DSN=YOUR.ROSLIB00,DISP=OLD
//ROSLIB01 DD  DSN=YOUR.ROSLIB01,DISP=OLD
//ROSLIB02 DD  DSN=YOUR.ROSLIB02,DISP=OLD
//SYSPRINT DD  SYSOUT=*
//BACKUP   DD  DSN=YOUR.DELTAx.BACKUP,DISP=SHR
/*