可以简单查看oracle隐含参数

select a.ksppinm name, b.ksppstvl value, a.ksppdesc description
  from x$ksppi a, x$ksppcv b
 where a.indx = b.indx and a.ksppinm like '_spin_count';

也可以按以下内容建立一个sql文件，例如保存在v$ORACLE_HOME/rdbms/admin/show_para.sql，在sqlplus中执行@?/rdbms/admin/show_para，然后输入参数名称可以进行模糊查询
col p_name for a40
col p_DESCRIPTION for a50
col p_value for a30
set linesize 10000
SELECT   i.ksppinm p_name,
    i.ksppdesc p_description,
    CV.ksppstvl p_VALUE,
    CV.ksppstdf isdefault,
    DECODE (BITAND (CV.ksppstvf, 7),1, 'MODIFIED',4, 'SYSTEM_MOD', 'FALSE')
    ismodified,
    DECODE (BITAND (CV.ksppstvf, 2), 2, 'TRUE', 'FALSE') isadjusted
    FROM   sys.x$ksppi i, sys.x$ksppcv CV
    WHERE       i.inst_id = USERENV ('Instance')
    AND CV.inst_id = USERENV ('Instance')
    AND i.indx = CV.indx
    AND upper(i.ksppinm) LIKE upper('%&p%')
    ORDER BY   REPLACE (i.ksppinm, '_', '');