Ticket #7628: 7628_cmarshal.diff

django/db/backends/oracle/base.py

@@ -40 +40 @@
         tr_name = get_trigger_name(table)
         tbl_name = self.quote_name(table)
         col_name = self.quote_name(column)
-        sequence_sql = 'CREATE SEQUENCE %s;' % sq_name
+        sequence_sql = """
+            DECLARE
+                i INTEGER;
+            BEGIN
+                SELECT COUNT(*) INTO i FROM USER_CATALOG
+                    WHERE TABLE_NAME = '%(sq_name)s' AND TABLE_TYPE = 'SEQUENCE';
+                IF i = 0 THEN
+                    EXECUTE IMMEDIATE 'CREATE SEQUENCE %(sq_name)s';
+                END IF;
+            END;
+            /""" % locals()
         trigger_sql = """
             CREATE OR REPLACE TRIGGER %(tr_name)s
             BEFORE INSERT ON %(tbl_name)s