Scripts:查询控制文件的信息dba_controlfile_records.sql

本文提供了一种查询Oracle数据库控制文件记录的方法，包括记录类型、大小、分配和使用情况等详细信息，有助于管理员更好地理解控制文件的状态。

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-- +----------------------------------------------------------------------------+
-- | Jeffrey M. Hunter |
-- | jhunter@idevelopment.info |
-- | www.idevelopment.info |
-- |----------------------------------------------------------------------------|
-- | Copyright (c) 1998-2012 Jeffrey M. Hunter. All rights reserved. |
-- |----------------------------------------------------------------------------|
-- | DATABASE : Oracle |
-- | FILE : dba_controlfile_records.sql |
-- | CLASS : Database Administration |
-- | PURPOSE : Query information information about the control file record |
-- | sections. |
-- | 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 : Control File Records |
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 type FORMAT a30 HEADING "Record Section Type"
COLUMN record_size FORMAT 999,999 HEADING "Record Size|(in bytes)"
COLUMN records_total FORMAT 999,999 HEADING "Records Allocated"
COLUMN bytes_alloc FORMAT 999,999,999 HEADING "Bytes Allocated"
COLUMN records_used FORMAT 999,999 HEADING "Records Used"
COLUMN bytes_used FORMAT 999,999,999 HEADING "Bytes Used"
COLUMN pct_used FORMAT B999 HEADING "% Used"
COLUMN first_index HEADING "First Index"
COLUMN last_index HEADING "Last Index"
COLUMN last_recid HEADING "Last RecID"

BREAK ON report

COMPUTE sum OF records_total ON report
COMPUTE sum OF bytes_alloc ON report
COMPUTE sum OF records_used ON report
COMPUTE sum OF bytes_used ON report
COMPUTE avg OF pct_used ON report

SELECT
type
, record_size
, records_total
, (records_total * record_size) bytes_alloc
, records_used
, (records_used * record_size) bytes_used
, NVL(records_used/records_total * 100, 0) pct_used
, first_index
, last_index
, last_recid
FROM v$controlfile_record_section
ORDER BY type
/