Added - Updating state of closed ADG Standby to not show as "Available"

Author: aballuri

internal/integrationtest/database_autonomous_database_resource_test.go

@@ -1773,6 +1773,7 @@ func TestResourceDatabaseAutonomousDatabaseResource_dataGuard(t *testing.T) {
 				resource.TestCheckResourceAttr(resourceName, "license_model", "LICENSE_INCLUDED"),
 				resource.TestCheckResourceAttrSet(resourceName, "state"),
 				resource.TestCheckResourceAttrSet(resourceName, "time_local_data_guard_enabled"),
+				resource.TestCheckResourceAttr(resourceName, "standby_db.0.state", "STANDBY"),
 
 				func(s *terraform.State) (err error) {
 					resId2, err = acctest.FromInstanceState(s, resourceName, "id")

internal/service/database/database_autonomous_database_resource.go

@@ -3287,7 +3287,7 @@ func (s *DatabaseAutonomousDatabaseResourceCrud) validateSwitchoverDatabase() er
 							fieldKeyFormat := fmt.Sprintf("%s.%d.%%s", "standby_db", 0)
 							if standbyState, ok := s.D.GetOkExists(fmt.Sprintf(fieldKeyFormat, "state")); ok {
 								wantedStandByState := oci_database.AutonomousDatabaseStandbySummaryLifecycleStateEnum(strings.ToUpper(standbyState.(string)))
-								if wantedStandByState == oci_database.AutonomousDatabaseStandbySummaryLifecycleStateAvailable {
+								if (wantedStandByState == oci_database.AutonomousDatabaseStandbySummaryLifecycleStateAvailable) || (wantedStandByState == oci_database.AutonomousDatabaseStandbySummaryLifecycleStateStandby) {
 									if err := s.switchoverDatabase(""); err != nil {
 										s.D.Set("switchover_to", oldRaw.(string))
 										return err