lei shi [http://community.jboss.org/people/ivinter] created the discussion "how can i get ParameterMetaData?" To view the discussion, visit: http://community.jboss.org/message/577826#577826 -------------------------------------------------------------- when i use jboss 5.1,and deploy a datasource,and my code is : Connection conn=DBConection.getInstance().getConnection();    CallableStatement csmt = null;    String proName = "";    proName = "{call sp_add(?,?,?)}";    csmt = conn.prepareCall(proName);    csmt.clearParameters();    ParameterMetaData pmd = csmt.getParameterMetaData();    for (int j = 0; j < 3; j++) {     System.out.println(pmd.getParameterClassName(j + 1));    } ParameterMetaData pmd = csmt.getParameterMetaData(); i get org.jboss.resource.adapter.jdbc.remote.SerializableParameterMetaData ,not java.sql.ParameterMetaData why? i want to invoke pmd.getParameterClassName(),but org.jboss.resource.adapter.jdbc.remote.SerializableParameterMetaData does not have such method. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/577826#577826] Start a new discussion in Datasource Configuration at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]