Index: server/src/main/org/jboss/ejb/txtimer/GeneralPurposeDatabasePersistencePlugin.java
===================================================================
--- server/src/main/org/jboss/ejb/txtimer/GeneralPurposeDatabasePersistencePlugin.java	(revision 81368)
+++ server/src/main/org/jboss/ejb/txtimer/GeneralPurposeDatabasePersistencePlugin.java	(working copy)
@@ -158,8 +158,10 @@
 
             // Add the primary key constraint using the pk-constraint-template
             JDBCFunctionMappingMetaData pkConstraint = typeMapping.getPkConstraintTemplate();
+            String name = SQLUtil.unquote(getTableName(), ds) + "_PK";
+            name = SQLUtil.fixConstraintName(name, ds); 
             String[] templateParams = new String[] {
-                  getTableName() + "_PK",
+                  name,
                   getColumnTimerID() + ", " + getColumnTargetID()
                   };
             pkConstraint.getFunctionSql(templateParams, createTableDDL);