diff --git a/plugins/org.jkiss.dbeaver.ext.oracle/src/org/jkiss/dbeaver/ext/oracle/edit/OracleConstraintManager.java b/plugins/org.jkiss.dbeaver.ext.oracle/src/org/jkiss/dbeaver/ext/oracle/edit/OracleConstraintManager.java
index 02a175582f7b9e32f947cd7930bb28c2cbc86c7f..f1dc2508e9c04cdf6a4ad73d8b0ec7ea81f70753 100644
--- a/plugins/org.jkiss.dbeaver.ext.oracle/src/org/jkiss/dbeaver/ext/oracle/edit/OracleConstraintManager.java
+++ b/plugins/org.jkiss.dbeaver.ext.oracle/src/org/jkiss/dbeaver/ext/oracle/edit/OracleConstraintManager.java
@@ -92,12 +92,14 @@ public class OracleConstraintManager extends SQLConstraintManager<OracleTableCon
     @Override
     protected String getDropConstraintPattern(OracleTableConstraint constraint)
     {
-        String clause;
+        String clause = "CONSTRAINT"; //$NON-NLS-1$;
+/*
         if (constraint.getConstraintType() == DBSEntityConstraintType.PRIMARY_KEY) {
             clause = "PRIMARY KEY"; //$NON-NLS-1$
         } else {
             clause = "CONSTRAINT"; //$NON-NLS-1$
         }
+*/
         return "ALTER TABLE " + PATTERN_ITEM_TABLE +" DROP " + clause + " " + PATTERN_ITEM_CONSTRAINT; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
     }