support/oracle
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

2026-03-12 20:23:15

Browse Source
This commit is contained in:
root
2026-03-12 21:23:47 +01:00
parent eab4b36eca
commit 93039b8489
3332 changed files with 699614 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

81
idev/undo_segments.sql Normal file
View File

@@ -0,0 +1,81 @@
-- +----------------------------------------------------------------------------+
-- | Jeffrey M. Hunter |
-- | jhunter@idevelopment.info |
-- | www.idevelopment.info |
-- |----------------------------------------------------------------------------|
-- | Copyright (c) 1998-2012 Jeffrey M. Hunter. All rights reserved. |
-- |----------------------------------------------------------------------------|
-- | DATABASE : Oracle |
-- | FILE : undo_segments.sql |
-- | CLASS : Undo Segments |
-- | PURPOSE : Reports undo statistic information including name, shrinks, |
-- | wraps, size and optimal size. 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$instance;
SET TERMOUT ON;
PROMPT
PROMPT +------------------------------------------------------------------------+
PROMPT | Report : Undo Segments |
PROMPT | Instance : &current_instance |
PROMPT +------------------------------------------------------------------------+
SET ECHO OFF
SET FEEDBACK 6
SET HEADING ON
SET LINESIZE 180
SET PAGESIZE 50000
SET TERMOUT ON
SET TIMING OFF
SET TRIMOUT ON
SET TRIMSPOOL ON
SET VERIFY OFF
CLEAR COLUMNS
CLEAR BREAKS
CLEAR COMPUTES
COLUMN instance_name FORMAT a9 HEADING 'Instance'
COLUMN undo_name FORMAT a30 HEADING 'Undo Name'
COLUMN tablespace FORMAT a11 HEADING 'Tablspace'
COLUMN in_extents FORMAT a23 HEADING 'Init / Next Extents'
COLUMN m_extents FORMAT a23 HEADING 'Min / Max Extents'
COLUMN status FORMAT a8 HEADING 'Status'
COLUMN wraps FORMAT 99,999 HEADING 'Wraps'
COLUMN shrinks FORMAT 99,999 HEADING 'Shrinks'
COLUMN opt FORMAT 999,999,999,999 HEADING 'Opt. Size'
COLUMN bytes FORMAT 999,999,999,999 HEADING 'Bytes'
COLUMN extents FORMAT 999 HEADING 'Extents'
BREAK ON instance_name SKIP 2
COMPUTE SUM LABEL 'Total: ' OF bytes ON instance_name
SELECT
i.instance_name instance_name
, a.owner || '.' || a.segment_name undo_name
, a.tablespace_name tablespace
, TRIM(TO_CHAR(a.initial_extent, '999,999,999,999')) || ' / ' ||
TRIM(TO_CHAR(a.next_extent, '999,999,999,999')) in_extents
, TRIM(TO_CHAR(a.min_extents, '999,999,999,999')) || ' / ' ||
TRIM(TO_CHAR(a.max_extents, '999,999,999,999')) m_extents
, a.status status
, b.bytes bytes
, b.extents extents
, d.shrinks shrinks
, d.wraps wraps
, d.optsize opt
FROM
gv$instance i
INNER JOIN gv$rollstat d ON (i.inst_id = d.inst_id)
INNER JOIN sys.undo$ c ON (d.usn = c.us#)
INNER JOIN dba_rollback_segs a ON (a.segment_name = c.name)
INNER JOIN dba_segments b ON (a.segment_name = b.segment_name)
ORDER BY
i.instance_name
, a.segment_name;