82 lines
3.9 KiB
SQL
82 lines
3.9 KiB
SQL
-- +----------------------------------------------------------------------------+
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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 : undo_segments.sql |
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-- | CLASS : Undo Segments |
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-- | PURPOSE : Reports undo statistic information including name, shrinks, |
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-- | wraps, size and optimal size. This script is RAC enabled. |
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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 : Undo Segments |
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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 a9 HEADING 'Instance'
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COLUMN undo_name FORMAT a30 HEADING 'Undo Name'
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COLUMN tablespace FORMAT a11 HEADING 'Tablspace'
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COLUMN in_extents FORMAT a23 HEADING 'Init / Next Extents'
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COLUMN m_extents FORMAT a23 HEADING 'Min / Max Extents'
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COLUMN status FORMAT a8 HEADING 'Status'
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COLUMN wraps FORMAT 99,999 HEADING 'Wraps'
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COLUMN shrinks FORMAT 99,999 HEADING 'Shrinks'
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COLUMN opt FORMAT 999,999,999,999 HEADING 'Opt. Size'
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COLUMN bytes FORMAT 999,999,999,999 HEADING 'Bytes'
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COLUMN extents FORMAT 999 HEADING 'Extents'
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BREAK ON instance_name SKIP 2
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COMPUTE SUM LABEL 'Total: ' OF bytes ON instance_name
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SELECT
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i.instance_name instance_name
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, a.owner || '.' || a.segment_name undo_name
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, a.tablespace_name tablespace
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, TRIM(TO_CHAR(a.initial_extent, '999,999,999,999')) || ' / ' ||
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TRIM(TO_CHAR(a.next_extent, '999,999,999,999')) in_extents
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, TRIM(TO_CHAR(a.min_extents, '999,999,999,999')) || ' / ' ||
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TRIM(TO_CHAR(a.max_extents, '999,999,999,999')) m_extents
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, a.status status
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, b.bytes bytes
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, b.extents extents
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, d.shrinks shrinks
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, d.wraps wraps
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, d.optsize opt
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FROM
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gv$instance i
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INNER JOIN gv$rollstat d ON (i.inst_id = d.inst_id)
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INNER JOIN sys.undo$ c ON (d.usn = c.us#)
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INNER JOIN dba_rollback_segs a ON (a.segment_name = c.name)
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INNER JOIN dba_segments b ON (a.segment_name = b.segment_name)
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ORDER BY
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i.instance_name
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, a.segment_name;
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