Index: openacs-4/packages/acs-kernel/sql/oracle/upgrade/upgrade-5.6.0d3-5.6.0d4.sql
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-kernel/sql/oracle/upgrade/upgrade-5.6.0d3-5.6.0d4.sql,v
diff -u -N -r1.2 -r1.3
--- openacs-4/packages/acs-kernel/sql/oracle/upgrade/upgrade-5.6.0d3-5.6.0d4.sql	5 Jan 2010 15:30:26 -0000	1.2
+++ openacs-4/packages/acs-kernel/sql/oracle/upgrade/upgrade-5.6.0d3-5.6.0d4.sql	6 Jan 2010 20:07:24 -0000	1.3
@@ -4,6 +4,5 @@
 
 alter table acs_data_links drop constraint acs_data_links_un;
 
-create unique index acs_data_links_un on acs_data_links (
-  object_id_one, object_id_two, relation_tag
-);
\ No newline at end of file
+alter table acs_data_links add constraint acs_data_links_un unique 
+(object_id_one, object_id_two, relation_tag);
\ No newline at end of file