Retrieving Errors and Warnings

This section describes how to retrieve native error codes and messages in JDBC and ODBC.

• Retrieve a Native Error Code and Message in JDBC

• Retrieve a Native Error Code and Message in ODBC

Retrieve a Native Error Code and Message in JDBC

In JDBC, the native error code and message can be retrieved as shown in this example:

private static void printSQLExceptions(SQLException e)
{
     while (e != null) {

        System.out.println("SQLState: " + 
        e.getSQLState());
        System.out.println("Message : " + 
        e.getMessage());
        System.out.println("Vendor  : " + 
        e.getErrorCode());
        e.printStackTrace();
        e = e.getNextException();
        System.out.println("");
     }
      e.printStackTrace();
}
        .   .   .

try {
      // JDBC method calls here
} 
catch (SQLException ex) {

     ex.printSQLExceptions();
}

It is possible for a single JDBC operation to generate multiple errors. These errors can be retrieved using multiple calls to the JDBC method SQLException.

Retrieve a Native Error Code and Message in ODBC

In ODBC the native error code and message can be retrieved with the SQLError function, as shown in the following example:

#define MSG_LNG 512

SQLCHAR szSqlState[MSG_LNG];                     /* SQL state string */
SQLINTEGER pfNativeError;                        /* Native error code */
SQLCHAR szErrorMsg[MSG_LNG];
                                     /* Error msg text buffer pointer */
SQLSMALLINT pcbErrorMsg;
                                    /* Error msg text Available bytes */
SQLRETURN ret = SQL_SUCCESS;

while ( ret == SQL_SUCCESS || ret == SQL_SUCCESS_WITH_INFO ) {
  ret = SQLError(henv, hdbc, hstmt, szSqlState, &pfNativeError,
                 szErrorMsg, MSG_LNG, &pcbErrorMsg);
  switch (ret) {
  case SQL_SUCCESS:
    fprintf(stderr, "*** %s\n*** ODBC Err = %s, ",
                   "TimesTen Err = %ld\n",
            szErrorMsg, szSqlState, pfNativeError);
    break;
  case SQL_SUCCESS_WITH_INFO:
    fprintf(stderr, "*** Call to SQLError failed with return ",
                    "code of SQL_SUCCESS_WITH_INFO.\n ",
                    "*** Need to increase size of ",
                    "message buffer.\n");
    break;
  case SQL_INVALID_HANDLE:
    fprintf(stderr, "*** Call to SQLError failed with ",
                   "return code of SQL_INVALID_HANDLE.\n");
    break;
  case SQL_ERROR:
    fprintf(stderr, "*** Call to SQLError failed with ",
                    "return code of SQL_ERROR.\n");
   break;
  case SQL_NO_DATA_FOUND:
    break;
  }
}

It is possible for a single ODBC operation to generate multiple errors. These errors can be retrieved using multiple calls to the ODBC function SQLError.