diff --git a/google/error_retry_predicates.go b/google/error_retry_predicates.go
index d02614392a9..73add242299 100644
--- a/google/error_retry_predicates.go
+++ b/google/error_retry_predicates.go
@@ -30,10 +30,3 @@ func pubsubTopicProjectNotReady(err error) (bool, string) {
 	}
 	return false, ""
 }
-
-func isSqlOperationInProgressError(err error) (bool, string) {
-	if gerr, ok := err.(*googleapi.Error); ok && gerr.Code == 409 {
-		return true, "Waiting for other concurrent Cloud SQL operations to finish"
-	}
-	return false, ""
-}
diff --git a/google/resource_sql_database_instance.go b/google/resource_sql_database_instance.go
index aae49badee9..0732c9d8091 100644
--- a/google/resource_sql_database_instance.go
+++ b/google/resource_sql_database_instance.go
@@ -490,12 +490,11 @@ func resourceSqlDatabaseInstanceCreate(d *schema.ResourceData, meta interface{})
 		defer mutexKV.Unlock(instanceMutexKey(project, instance.MasterInstanceName))
 	}
 
-	var op *sqladmin.Operation
-	err = retryTimeDuration(func() (operr error) {
-		op, operr = config.clientSqlAdmin.Instances.Insert(project, instance).Do()
-		return operr
-	}, d.Timeout(schema.TimeoutCreate), isSqlOperationInProgressError)
+	op, err := config.clientSqlAdmin.Instances.Insert(project, instance).Do()
 	if err != nil {
+		if gerr, ok := err.(*googleapi.Error); ok && gerr.Code == 409 {
+			return fmt.Errorf("Error, failed to create instance %s with error code 409: %s. This may be due to a name collision - SQL instance names cannot be reused within a week.", instance.Name, err)
+		}
 		return fmt.Errorf("Error, failed to create instance %s: %s", instance.Name, err)
 	}
 
@@ -516,10 +515,10 @@ func resourceSqlDatabaseInstanceCreate(d *schema.ResourceData, meta interface{})
 	// Users in a replica instance are inherited from the master instance and should be left alone.
 	if sqlDatabaseIsMaster(d) {
 		var users *sqladmin.UsersListResponse
-		err = retryTimeDuration(func() error {
+		err = retryTime(func() error {
 			users, err = config.clientSqlAdmin.Users.List(project, instance.Name).Do()
 			return err
-		}, d.Timeout(schema.TimeoutRead), isSqlOperationInProgressError)
+		}, 5)
 		if err != nil {
 			return fmt.Errorf("Error, attempting to list users associated with instance %s: %s", instance.Name, err)
 		}
@@ -702,10 +701,13 @@ func resourceSqlDatabaseInstanceRead(d *schema.ResourceData, meta interface{}) e
 	}
 
 	var instance *sqladmin.DatabaseInstance
-	err = retryTimeDuration(func() (rerr error) {
-		instance, rerr = config.clientSqlAdmin.Instances.Get(project, d.Id()).Do()
-		return rerr
-	}, d.Timeout(schema.TimeoutRead), isSqlOperationInProgressError)
+	err = retry(
+		func() error {
+			instance, err = config.clientSqlAdmin.Instances.Get(project, d.Id()).Do()
+			return err
+		},
+	)
+
 	if err != nil {
 		return handleNotFoundError(err, d, fmt.Sprintf("SQL Database Instance %q", d.Get("name").(string)))
 	}
@@ -779,11 +781,7 @@ func resourceSqlDatabaseInstanceUpdate(d *schema.ResourceData, meta interface{})
 		defer mutexKV.Unlock(instanceMutexKey(project, v.(string)))
 	}
 
-	var op *sqladmin.Operation
-	err = retryTimeDuration(func() (rerr error) {
-		op, rerr = config.clientSqlAdmin.Instances.Update(project, d.Get("name").(string), instance).Do()
-		return rerr
-	}, d.Timeout(schema.TimeoutUpdate), isSqlOperationInProgressError)
+	op, err := config.clientSqlAdmin.Instances.Update(project, d.Get("name").(string), instance).Do()
 	if err != nil {
 		return fmt.Errorf("Error, failed to update instance settings for %s: %s", instance.Name, err)
 	}
@@ -812,10 +810,11 @@ func resourceSqlDatabaseInstanceDelete(d *schema.ResourceData, meta interface{})
 	}
 
 	var op *sqladmin.Operation
-	err = retryTimeDuration(func() (rerr error) {
-		op, rerr = config.clientSqlAdmin.Instances.Delete(project, d.Get("name").(string)).Do()
-		return rerr
+	err = retryTimeDuration(func() error {
+		op, err = config.clientSqlAdmin.Instances.Delete(project, d.Get("name").(string)).Do()
+		return err
 	}, d.Timeout(schema.TimeoutDelete))
+
 	if err != nil {
 		return fmt.Errorf("Error, failed to delete instance %s: %s", d.Get("name").(string), err)
 	}
diff --git a/google/validation.go b/google/validation.go
index b10ceb778fe..f789992bd72 100644
--- a/google/validation.go
+++ b/google/validation.go
@@ -41,7 +41,7 @@ var (
 
 	ServiceAccountLinkRegexPrefix = "projects/" + ProjectRegexWildCard + "/serviceAccounts/"
 	PossibleServiceAccountNames   = []string{
-		AppEngineServiceAccountNameRegex,
+		ServiceDefaultAccountNameRegex,
 		ComputeServiceAccountNameRegex,
 		CreatedServiceAccountNameRegex,
 	}
@@ -51,12 +51,16 @@ var (
 
 	// Format of service accounts created through the API
 	CreatedServiceAccountNameRegex = fmt.Sprintf(RFC1035NameTemplate, 4, 28) + "@" + ProjectNameInDNSFormRegex + "\\.iam\\.gserviceaccount\\.com$"
-	ProjectNameInDNSFormRegex      = "[-a-z0-9\\.]{1,63}"
 
-	// Format of default App Engine service accounts created by Google
-	AppEngineServiceAccountNameRegex = ProjectRegex + "@appspot.gserviceaccount.com"
+	// Format of service-created service account
+	// examples are:
+	// 		$PROJECTID@cloudbuild.gserviceaccount.com
+	// 		$PROJECTID@cloudservices.gserviceaccount.com
+	// 		$PROJECTID@appspot.gserviceaccount.com
+	ServiceDefaultAccountNameRegex = ProjectRegex + "@[a-z]+.gserviceaccount.com$"
 
-	ProjectNameRegex = "^[A-Za-z0-9-'\"\\s!]{4,30}$"
+	ProjectNameInDNSFormRegex = "[-a-z0-9\\.]{1,63}"
+	ProjectNameRegex          = "^[A-Za-z0-9-'\"\\s!]{4,30}$"
 )
 
 var rfc1918Networks = []string{