This task creates host specific files for backups, loads the scripts on their respective hosts, and verifies the credentials.

1. On a host of the upstream Recovery Appliance, create the backup_database_rahadr1.rman text file with the following content.

   {
   allocate channel rahadr1_sbt_1 device type sbt
     format '%d_%U'
     PARMS="SBT_LIBRARY=/u01/app/oracle/product/12.2.0.1/dbhome_1/lib/libra.so,
     ENV=(RA_WALLET='location=file:/u01/app/oracle/product/12.2.0.1/dbhome_1/dbs/zdlra
     credential_alias=dr_rahadr1')";
   
   allocate channel rahadr1_sbt_2 device type sbt
     format '%d_%U'
     PARMS="SBT_LIBRARY=/u01/app/oracle/product/12.2.0.1/dbhome_1/lib/libra.so,
     ENV=(RA_WALLET='location=file:/u01/app/oracle/product/12.2.0.1/dbhome_1/dbs/zdlra
     credential_alias=dr_rahadr1')";
   
   backup
     tag '&1'
     cumulative incremental level 1
     filesperset 1
     section size 64g
     database
       plus archivelog
         not backed up
         filesperset 32
         delete input;
   }

2. On a host of the downstream Recovery Appliance, create the backup_database_rahadr2.rman text file with the following content.

   {
   allocate channel rahadr2_sbt_1 device type sbt
     format '%d_%U'
     PARMS="SBT_LIBRARY=/u01/app/oracle/product/12.2.0.1/dbhome_1/lib/libra.so,
     ENV=(RA_WALLET='location=file:/u01/app/oracle/product/12.2.0.1/dbhome_1/dbs/zdlra
     credential_alias=dr_rahadr2')";
   
   allocate channel rahadr1_sbt_2 device type sbt
     format '%d_%U'
     PARMS="SBT_LIBRARY=/u01/app/oracle/product/12.2.0.1/dbhome_1/lib/libra.so,
     ENV=(RA_WALLET='location=file:/u01/app/oracle/product/12.2.0.1/dbhome_1/dbs/zdlra
     credential_alias=dr_rahadr2')";
   
   backup
     tag '&1'
     cumulative incremental level 1
     filesperset 1
     section size 64g
     database
       plus archivelog
         not backed up
         filesperset 32
         delete input;
   }

3. Ensure the script on RAHADR1 does not exist by trying to delete it first. Then load the HADR1 script into the RAHADR1 Recovery Appliance.

   $ rman target / catalog /@dr_rahadr1
   
   RMAN> delete script backup_database;
   
   RMAN> create script backup_database from file
   '/home/oracle/backup_database_rahadr1.rman';

4. Ensure the script on RAHADR2 does not exist by trying to delete it first. Then load the HADR2 script into the RAHADR2 Recovery Appliance.

   $ rman target / catalog /@dr_rahadr2
   
   RMAN> delete script backup_database;
   
   RMAN> create script backup_database from file
   '/home/oracle/backup_database_rahadr2.rman';

5. Verify credentials have access to the database.

   $ rman target / catalog /@dr_rahadr
   
   RMAN> print script backup_database;
   
   printing stored script: backup_database
   {
   allocate channel rahadr1_sbt_1 device type sbt
     format '%d_%U'
     PARMS="SBT_LIBRARY=/u01/app/oracle/product/12.2.0.1/dbhome_1/lib/libra.so,
     ENV=(RA_WALLET='location=file:/u01/app/oracle/product/12.2.0.1/dbhome_1/dbs/zdlra
     credential_alias=dr_rahadr1')";
   
   allocate channel rahadr1_sbt_2 device type sbt
     format '%d_%U'
     PARMS="SBT_LIBRARY=/u01/app/oracle/product/12.2.0.1/dbhome_1/lib/libra.so,
     ENV=(RA_WALLET='location=file:/u01/app/oracle/product/12.2.0.1/dbhome_1/dbs/zdlra
     credential_alias=dr_rahadr1')";
   
   backup
     tag '&1'
     cumulative incremental level 1
     filesperset 1
     section size 64g
     database
       plus archivelog
         not backed up
         filesperset 32
         delete input;
   }