Image Restore Utility

Describes the functions of the Image Restore utility and the JCL required to run it.

The Image Restore utility copies a specified database image copy, overwriting the database with the same name, from the backup location to current location as defined by the ES_IMSDAT environment variable. If the ES_IMSDAT variable contains a concatenation of directories, each directory is searched for the matching database, and the database image copy is copied to the first directory found that contains a matching database. If the database is not found in any of the directories, the database image copy is copied to the first directory on the path.

Note: You can run the Image Restore utility to restore just the database, or you can restore the database and restore recent updates simultaneously using the Recovery utility.

An Image Restore job is run using JCL that includes the following:

One STOP statement to stop each database you want to restore. All databases must be stopped before the Image Restore utility can overwrite them. For example:

//STOP01  EXEC PGM=MFDBUJCL,PARM='/STO DB BNKTXN'
//SYSOUT    DD SYSOUT=*
//STOP02  EXEC PGM=MFDBUJCL,PARM='/STO DB BNKCUST'
//SYSOUT    DD SYSOUT=*
//STOP03  EXEC PGM=MFDBUJCL,PARM='/STO DB BNKACC'

A JCL step to execute the Image Restore utility, IMAGERESTORE. For example:
```
//IC    EXEC PGM=MFDBUJCL,PARM='IMAGERESTORE'
```

Specify the name and location of each database you want to restore. The following example specifies that the copied databases are stored as GDGs, enabling you to keep multiple versions of the data:

//BNKIC1   DD DSN=BNKTXN.IC.GDG(0),DISP=OLD
//BNKIC2  DD DSN=BNKTXNX1.IC.GDG(0),DISP=OLD
//BNKIC3  DD DSN=BNKCUST.IC.GDG(0),DISP=OLD
//BNKIC4   DD DSN=BNKACC.IC.GDG(0),DISP=OLD
//BNKIC5  DD  DSN=BNKTXNX2.IC.GDG(0),DISP=OLD

In the SYSIN statement, list each database you want to restore followed by the name of the DD that represents the location of the backed up database. Place the database name in the first eight columns. For example:
```
//SYSIN    DD *
BNKTXN       BNKIC1
BNKTXNX1     BNKIC2
BNKCUST      BNKIC3
BNKACC       BNKIC4
BNKTXNX2     BNKIC5
```

The following is a complete example of the JCL required to execute the Image Restore utility. It specifies that five databases defined in the first eight bytes of SYSIN data are to be restored from the location specified by the DD statements to the location defined by the ES_IMSDAT environment variable:

//RUNGDG JOB  'IR',CLASS=A,MSGCLASS=A
//*
//STOP01  EXEC PGM=MFDBUJCL,PARM='/STO DB BNKTXN'
//SYSOUT    DD SYSOUT=*
//STOP02  EXEC PGM=MFDBUJCL,PARM='/STO DB BNKCUST'
//SYSOUT    DD SYSOUT=*
//STOP03  EXEC PGM=MFDBUJCL,PARM='/STO DB BNKACC'
//SYSOUT    DD SYSOUT=*
//*
//IC    EXEC PGM=MFDBUJCL,PARM='IMAGERESTORE'
//*
//SYSOUT   DD SYSOUT=*
//BNKIC1   DD DSN=BNKTXN.IC.GDG(0),DISP=OLD
//BNKIC2  DD DSN=BNKTXNX1.IC.GDG(0),DISP=OLD
//BNKIC3  DD DSN=BNKCUST.IC.GDG(0),DISP=OLD
//BNKIC4   DD DSN=BNKACC.IC.GDG(0),DISP=OLD
//BNKIC5  DD  DSN=BNKTXNX2.IC.GDG(0),DISP=OLD
//SYSIN    DD *
BNKTXN       BNKIC1
BNKTXNX1     BNKIC2
BNKCUST      BNKIC3
BNKACC       BNKIC4
BNKTXNX2     BNKIC5
/*
//*
//START01  EXEC PGM=MFDBUJCL,PARM='/STA DB BNKTXN'
//SYSOUT    DD SYSOUT=*
//START04  EXEC PGM=MFDBUJCL,PARM='/STA DB BNKCUST'
//SYSOUT    DD SYSOUT=*
//START05  EXEC PGM=MFDBUJCL,PARM='/STA DB BNKACC'
//SYSOUT    DD SYSOUT=*
//