Listing parameters and their descriptions

Listing parameters and their descriptions

To display a list of parameters and their descriptions, use the v$parameter view, like this: 

		
SQL > SELECT name,value,description FROM v$parameter;

OR

SQL > SHOW PARAMETERS;

Reader Feedback

"Database guy" writes: A nice and simple tip. The caveats should be listed though--you need to have SELECT permisssion on v$parameter.

I use the following script to generate the list of database parameters or just a single parameter. The script will prompt for the parameter name for which you need the value. If you need all the values just press ENTER when prompted for "Enter value for parameter:". The script will save the results into a file named parameter<dbname>.txt where <dbname> is the name of the database. The script is saved as param.sql and run at SQL prompt.

SQL> @param
---------------------------------------------------------------
REM The Script
REM param.sql
set pages 300
set heading off
spool tempfile.sql
select 'define DB ='||name from v$database;
spool off

-- set heading on  feedback on  verify on  pause off
start tempfile.sql
spool parameter&DB..txt
select 'Database '||name||' was created on 
'||created||' in '||log_mode||' mode
' from V$DATABASE;
set heading on
set pages 300
select substr(name,1,35) name,
substr(value,1,30) value,
isdefault
from v$parameter
where name like '&Parameter%'
order by substr(name,1,20)
/
spool off
host rm tempfile.sql
REM

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 END Script.

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This was first published in May 2002

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