90 lines
4.9 KiB
SQL
90 lines
4.9 KiB
SQL
-- +----------------------------------------------------------------------------+
|
|
-- | Jeffrey M. Hunter |
|
|
-- | jhunter@idevelopment.info |
|
|
-- | www.idevelopment.info |
|
|
-- |----------------------------------------------------------------------------|
|
|
-- | Copyright (c) 1998-2012 Jeffrey M. Hunter. All rights reserved. |
|
|
-- |----------------------------------------------------------------------------|
|
|
-- | DATABASE : Oracle |
|
|
-- | FILE : mts_shared_server_statistics.sql |
|
|
-- | CLASS : Multi-threaded Server (MTS) |
|
|
-- | PURPOSE : Display status and metrics related to MTS shared server |
|
|
-- | statistics. |
|
|
-- | |
|
|
-- | SERVERS_STARTED : The number of shared server processes |
|
|
-- | started as the instance adjusts the number |
|
|
-- | of shared processes up and down from the |
|
|
-- | initial value specified by the MTS_SERVERS |
|
|
-- | parameter. When the instance starts, and |
|
|
-- | after the initial number of shared server |
|
|
-- | processes processes specified by |
|
|
-- | MTS_SERVERS has been started, this value |
|
|
-- | is set to 0. From that point on, this |
|
|
-- | value is incremented whenever a new shared |
|
|
-- | server process is started. |
|
|
-- | SERVERS_TERMINATED : A count of the total number of shared |
|
|
-- | server processes that have been terminated |
|
|
-- | since the instance was started. |
|
|
-- | SERVERS_HIGHWATER : The maximum number of shared server |
|
|
-- | processes that have ever been running at |
|
|
-- | one moment in time. |
|
|
-- | |
|
|
-- | NOTES: If the SERVERS_HIGHWATER value matches, the instance's |
|
|
-- | MTS_MAX_SERVERS value, then you might realize a |
|
|
-- | performance benefit from increasing MTS_MAX_SERVERS. If |
|
|
-- | the counts for SERVERS_STARTED and SERVERS_TERMINATED |
|
|
-- | keep climbing, then you should consider raising |
|
|
-- | MTS_SERVERS. Raising the minimum number of shared server |
|
|
-- | processes should reduce the number that are deleted only |
|
|
-- | to be recreated later. |
|
|
-- | |
|
|
-- | This script is RAC enabled. |
|
|
-- | |
|
|
-- | NOTE : As with any code, ensure to test this script in a development |
|
|
-- | environment before attempting to run it in production. |
|
|
-- +----------------------------------------------------------------------------+
|
|
|
|
SET TERMOUT OFF;
|
|
COLUMN current_instance NEW_VALUE current_instance NOPRINT;
|
|
SELECT rpad(instance_name, 17) current_instance FROM v$instance;
|
|
SET TERMOUT ON;
|
|
|
|
PROMPT
|
|
PROMPT +------------------------------------------------------------------------+
|
|
PROMPT | Report : Multi-threaded Server: Shared Server Statistics |
|
|
PROMPT | Instance : ¤t_instance |
|
|
PROMPT +------------------------------------------------------------------------+
|
|
|
|
SET ECHO OFF
|
|
SET FEEDBACK 6
|
|
SET HEADING ON
|
|
SET LINESIZE 180
|
|
SET PAGESIZE 50000
|
|
SET TERMOUT ON
|
|
SET TIMING OFF
|
|
SET TRIMOUT ON
|
|
SET TRIMSPOOL ON
|
|
SET VERIFY OFF
|
|
|
|
CLEAR COLUMNS
|
|
CLEAR BREAKS
|
|
CLEAR COMPUTES
|
|
|
|
COLUMN instance_name FORMAT a10 HEAD 'Instance'
|
|
COLUMN servers_started FORMAT 999,999,999 HEAD 'Servers Started'
|
|
COLUMN servers_terminated FORMAT 999,999,999 HEAD 'Servers Terminated'
|
|
COLUMN servers_highwater FORMAT 999,999,999 HEAD 'Servers Highwater'
|
|
|
|
SELECT
|
|
i.instance_name instance_name
|
|
, s.servers_started servers_started
|
|
, s.servers_terminated servers_terminated
|
|
, s.servers_highwater servers_highwater
|
|
FROM
|
|
gv$instance i
|
|
, gv$shared_server_monitor s
|
|
WHERE
|
|
i.inst_id = s.inst_id
|
|
ORDER BY
|
|
i.instance_name;
|