2026-03-12 20:23:15

idev/fdb_redo_time_matrix.sql

@@ -0,0 +1,62 @@
+-- +----------------------------------------------------------------------------+
+-- |                          Jeffrey M. Hunter                                 |
+-- |                      jhunter@idevelopment.info                             |
+-- |                         www.idevelopment.info                              |
+-- |----------------------------------------------------------------------------|
+-- |      Copyright (c) 1998-2012 Jeffrey M. Hunter. All rights reserved.       |
+-- |----------------------------------------------------------------------------|
+-- | DATABASE : Oracle                                                          |
+-- | FILE     : fdb_redo_time_matrix.sql                                        |
+-- | CLASS    : Flashback Database                                              |
+-- | PURPOSE  : Provide details on the amount of redo data being collected by   |
+-- |            Oracle Flashback Database over given time frames.               |
+-- | 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(sys_context('USERENV', 'INSTANCE_NAME'), 17) current_instance
+FROM dual;
+SET TERMOUT ON;
+
+PROMPT 
+PROMPT +------------------------------------------------------------------------+
+PROMPT | Report   : Flashback Database Redo Time Matrix                         |
+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 begin_time               FORMAT a21                HEADING 'Begin Time'
+COLUMN end_time                 FORMAT a21                HEADING 'End Time'
+COLUMN flashback_data           FORMAT 9,999,999,999,999  HEADING 'Flashback Data'
+COLUMN db_data                  FORMAT 9,999,999,999,999  HEADING 'DB Data'
+COLUMN redo_data                FORMAT 9,999,999,999,999  HEADING 'Redo Data'
+COLUMN estimated_flashback_size FORMAT 9,999,999,999,999  HEADING 'Estimated|Flashback Size'
+
+SELECT
+    TO_CHAR(begin_time, 'DD-MON-YYYY HH24:MI:SS') begin_time
+  , TO_CHAR(end_time, 'DD-MON-YYYY HH24:MI:SS') end_time
+  , flashback_data
+  , db_data
+  , redo_data
+  , estimated_flashback_size
+FROM
+    v$flashback_database_stat
+ORDER BY
+   begin_time;
+