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problems with currval and rollback

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Hi all,
   So I started to make some changes with my code here and there
(nothing to do with the relevant lines) and suddenly currval and
rollback don't work.

	      try{
			db.setAutoCommit(false);
			addLM.setInt(1, lm.getOrigin());
                           .......
                     addLM.executeUpdate();
                     sql = db.createStatement();
                      ResultSet result = sql.executeQuery("SELECT
currval('lm_id_seq');");
			if (result. next()){
				db.commit();
				db.setAutoCommit(true);
                         else{
				db.rollback(); //reverse all changes
				db.setAutoCommit(true);
                       }
		catch(SQLException ex){
			try {
				db.rollback();
				db.setAutoCommit(true);
			} catch (SQLException e) {
				throw e;
                       }
			throw ex;
	   }

What happens is that the it inserts a db, but cannot get a value back
using currval  (ERROR: ERROR: currval of sequence "lm_id_seq" is not
yet defined in this session 55000  ) , yet the db gets the addlm
inserted.


Shouldn't it rollback?
Furthermore, why would currval suddenly stop working?

Much thanks for your feedback in advance.

-assad


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