> Connection conn = ... > CallableStatement cs = conn.prepareCall("{? = call > nextval('seq_nm')}"); cs.registerOutParameter(1, Types.BIGINT); > cs.execute(); long nextval = cs.getLong(1); cs.close(); Yeah, it seems to work, if i change the definition for calling the sequence in conjunction with sequoia trough jboss change into: "{call nextvalue('seq_name')}" [the "{}" pair is important !] and use the "org.postgresql.jdbc3.Jdbc3PooledDataSource" driver class. Many Thx !