diff --git a/ansible/group_vars/environment_name_delius_core_preproduction_stage_delius_primarydb.yml b/ansible/group_vars/environment_name_delius_core_preproduction_stage_delius_primarydb.yml
index 834353ece..8873e151a 100644
--- a/ansible/group_vars/environment_name_delius_core_preproduction_stage_delius_primarydb.yml
+++ b/ansible/group_vars/environment_name_delius_core_preproduction_stage_delius_primarydb.yml
@@ -4,7 +4,7 @@ database_global_database: STGNDA
 database_taf_service: STGNDA_TAF
 database_primary_unique: STGNDA
 database_primary_sid: STGNDA
-rman_level_0_backup_duration_target: "21:00"
+rman_level_0_backup_duration_target: "12:00"
 rman_uncompressed_backup: Y
 rman_retention_policy: RECOVERY WINDOW OF 31 DAYS
 cfo_database_directory: "/u01/app/oracle/admin/{{ database_global_database }}/cfo/shared_files/National/cfo"
diff --git a/ansible/group_vars/environment_name_delius_mis_preproduction_stage_mis_primarydb.yml b/ansible/group_vars/environment_name_delius_mis_preproduction_stage_mis_primarydb.yml
index 00c686aef..910cf70d9 100644
--- a/ansible/group_vars/environment_name_delius_mis_preproduction_stage_mis_primarydb.yml
+++ b/ansible/group_vars/environment_name_delius_mis_preproduction_stage_mis_primarydb.yml
@@ -3,7 +3,7 @@ database_global_database: STGMIS
 database_taf_service: STGMIS_TAF
 database_primary_unique: STGMIS
 database_primary_sid: STGMIS
-rman_level_0_backup_duration_target: "19:00"
+rman_level_0_backup_duration_target: "12:00"
 rman_uncompressed_backup: Y
 rman_retention_policy: RECOVERY WINDOW OF 31 DAYS
 database_parameters: