April 1999
Intermediate to advanced
552 pages
15h 39m
English
Content preview from Oracle Distributed SystemsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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busyq.sql
---------------------------------------------------------------------------
-- Filename: busyq.sql
-- Purpose: Provides stats indicating whether a given queue is overly
-- taxed in a Multi-Threaded Server environment.
-- If the COMMON queue is overly taxed, consider adding more
-- servers.
-- Author: Chas. Dye (cdye@excitecorp.com)
-- Date: 6-Aug-1998
---------------------------------------------------------------------------
column type heading "Queue|Type" format a10
column circuit heading "Name" format a8
column queued heading "Items|Queued" format 999,999
column wait heading "Total|Time|Waited" format 999,999,999
column totalq heading "Total|Items|Processed" format 999,999,999,999
column avgwait heading "Average|Wait" format 9,999.90
set head off
set feedback off
SELECT sysdate
FROM dual
/
set head on
set feedback on
SELECT paddr,
type,
queued,
wait,
totalq,
decode(totalq, 0, 0, wait)/decode(totalq, 0, 1, totalq) avgwait
FROM v$queue
/