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