Bug Fix - ExaDB-XS VM Cluster Getting Replaced due to HostName Case Mismatch

Author: Yue Deng

examples/database/db_systems/db_exadbxs/exadb_vm_cluster_database.tf

@@ -4,7 +4,7 @@
 resource "oci_database_db_home" "test_db_home" {
   display_name = "ExampleExaDbVmDbHome"
   db_system_id = oci_database_exadb_vm_cluster.test_exadb_vm_cluster.id
-  db_version   = "23.4.0.24.05"
+  db_version   = data.oci_database_gi_version_minor_versions.test_gi_minor_versions.gi_minor_versions[0].version
 }
 
 resource "oci_database_database" "test_db1" {

internal/integrationtest/database_exadb_vm_cluster_test.go

@@ -53,7 +53,7 @@ var (
 		"display_name":                 acctest.Representation{RepType: acctest.Required, Create: `TFExadbVmCluster`, Update: `TFExadbVmClusterUpdatedName`},
 		"exascale_db_storage_vault_id": acctest.Representation{RepType: acctest.Required, Create: `${oci_database_exascale_db_storage_vault.test_exascale_db_storage_vault.id}`},
 		"grid_image_id":                acctest.Representation{RepType: acctest.Required, Create: `${var.grid_image_id}`},
-		"hostname":                     acctest.Representation{RepType: acctest.Required, Create: `apollo`},
+		"hostname":                     acctest.Representation{RepType: acctest.Required, Create: `APOLLO`}, // hostname is in UPPERCASE in config and in lowercase in response (hence state) but there will be no diff since hostname is considered case-insensitive
 		"shape":                        acctest.Representation{RepType: acctest.Required, Create: `EXADBXS`},
 		"ssh_public_keys":              acctest.Representation{RepType: acctest.Required, Create: []string{`ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDOuBJgh6lTmQvQJ4BA3RCJdSmxRtmiXAQEEIP68/G4gF3XuZdKEYTFeputacmRq9yO5ZnNXgO9akdUgePpf8+CfFtveQxmN5xo3HVCDKxu/70lbMgeu7+wJzrMOlzj+a4zNq2j0Ww2VWMsisJ6eV3bJTnO/9VLGCOC8M9noaOlcKcLgIYy4aDM724MxFX2lgn7o6rVADHRxkvLEXPVqYT4syvYw+8OVSnNgE4MJLxaw8/2K0qp19YlQyiriIXfQpci3ThxwLjymYRPj+kjU1xIxv6qbFQzHR7ds0pSWp1U06cIoKPfCazU9hGWW8yIe/vzfTbWrt2DK6pLwBn/G0x3 sample`}},
 		"security_attributes":          acctest.Representation{RepType: acctest.Optional, Create: map[string]string{"oracle-zpr.maxegresscount.value": "42", "oracle-zpr.maxegresscount.mode": "enforce"}, Update: map[string]string{"oracle-zpr.maxegresscount.value": "updatedValue", "oracle-zpr.maxegresscount.mode": "enforce"}},

internal/service/database/database_exadb_vm_cluster_resource.go

@@ -68,9 +68,10 @@ func DatabaseExadbVmClusterResource() *schema.Resource {
 				Required: true,
 			},
 			"hostname": {
-				Type:     schema.TypeString,
-				Required: true,
-				ForceNew: true,
+				Type:             schema.TypeString,
+				Required:         true,
+				ForceNew:         true,
+				DiffSuppressFunc: tfresource.EqualIgnoreCaseSuppressDiff,
 			},
 			"shape": {
 				Type:     schema.TypeString,