diff --git a/src/backend/catalog/namespace.c b/src/backend/catalog/namespace.c
index d58313a2ee073036311e1a1583c57981ce911799..723355ac898d77bf2657234ade5b890c2fb0c8a7 100644
--- a/src/backend/catalog/namespace.c
+++ b/src/backend/catalog/namespace.c
@@ -13,7 +13,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/catalog/namespace.c,v 1.44 2003/01/10 22:03:27 petere Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/catalog/namespace.c,v 1.45 2003/01/12 18:19:37 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -278,29 +278,6 @@ RelnameGetRelid(const char *relname)
 	return InvalidOid;
 }
 
-/*
- * RelidGetNamespaceId
- *		Given a relation OID, return the namespace OID.
- */
-Oid
-RelidGetNamespaceId(Oid relid)
-{
-	HeapTuple	tuple;
-	Form_pg_class pg_class_form;
-	Oid			result;
-
-	tuple = SearchSysCache(RELOID,
-						   ObjectIdGetDatum(relid),
-						   0, 0, 0);
-	if (!HeapTupleIsValid(tuple))
-		elog(ERROR, "cache lookup failed for relation %u", relid);
-	pg_class_form = (Form_pg_class) GETSTRUCT(tuple);
-
-	result = pg_class_form->relnamespace;
-	ReleaseSysCache(tuple);
-	return result;
-}
-
 
 /*
  * RelationIsVisible
diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c
index a1a8134a6a713002d548b960837a5654f213dc1c..04aed372c004e856aae44576f1373d33e080b65f 100644
--- a/src/backend/executor/execMain.c
+++ b/src/backend/executor/execMain.c
@@ -26,7 +26,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.197 2003/01/10 22:03:27 petere Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.198 2003/01/12 18:19:37 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -419,7 +419,7 @@ ExecCheckXactReadOnly(Query *parsetree, CmdType operation)
 			if (!rte->checkForWrite)
 				continue;
 
-			if (isTempNamespace(RelidGetNamespaceId(rte->relid)))
+			if (isTempNamespace(get_rel_namespace(rte->relid)))
 				continue;
 
 			goto fail;
diff --git a/src/include/catalog/namespace.h b/src/include/catalog/namespace.h
index efd5ae3278671cd614923ec9c8491c29c6e2e5df..6e9522bcd96c9a6acb3b22f0dbed987cbb11cea0 100644
--- a/src/include/catalog/namespace.h
+++ b/src/include/catalog/namespace.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: namespace.h,v 1.25 2003/01/10 22:03:30 petere Exp $
+ * $Id: namespace.h,v 1.26 2003/01/12 18:19:37 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -51,7 +51,6 @@ typedef struct _OpclassCandidateList
 extern Oid	RangeVarGetRelid(const RangeVar *relation, bool failOK);
 extern Oid	RangeVarGetCreationNamespace(const RangeVar *newRelation);
 extern Oid	RelnameGetRelid(const char *relname);
-extern Oid	RelidGetNamespaceId(Oid relid);
 extern bool RelationIsVisible(Oid relid);
 
 extern Oid	TypenameGetTypid(const char *typname);