JAVA J2EE 4 U

 SET LINESIZE 200;

SET PAGESIZE 500;

SET TERMOUT OFF;

SET HEADING OFF;

SET FEEDBACK OFF;

SET TRIMSPOOL ON;

SPOOL /tmp/oracle_parameters.txt;

SELECT name || '=' || value 

FROM v$parameter 

ORDER BY name;

SPOOL OFF;

SET TERMOUT ON;