2026-03-12 20:23:15

vg/dg_transport_lag.sql

@@ -0,0 +1,91 @@
+@@header
+/*
+*
+*  Author    : Vishal Gupta
+*  Purpose   : Display "Real" transport lag on DataGuard standby database
+*  Parameter : 1 - Number of hours  (Default '48')
+*            : 2 - LagMinutes       (Default 1 minute)
+*
+*  Revision History:
+*  ===================
+*  Date       Author        Description
+*  ---------  ------------  -----------------------------------------
+*  14-Jan-15  Vishal Gupta  Created
+*  
+*/
+
+
+
+/************************************
+*  INPUT PARAMETERS
+************************************/
+UNDEFINE HOURS
+UNDEFINE LagMinutes
+DEFINE HOURS="&&1"
+DEFINE LagMinutes="&&2"
+
+set term off
+COLUMN  _HOURS               NEW_VALUE  HOURS                NOPRINT
+COLUMN  _LagMinutes          NEW_VALUE  LagMinutes           NOPRINT
+
+SELECT DECODE('&&HOURS','','48','&&HOURS')                   "_HOURS"
+     , DECODE('&&LagMinutes','','1','&&LagMinutes')                   "_LagMinutes"
+FROM DUAL;
+set term on
+
+
+/************************************
+*  M A I N   S C R I P T
+************************************/
+
+PROMPT *************************************************
+PROMPT * DataGuard - Real Transport Lag
+PROMPT *
+PROMPT * Input Parameter:
+PROMPT *   Number Of Hours : &&HOURS
+PROMPT *   Lag Minutes     : &&LagMinutes
+PROMPT *************************************************
+
+COLUMN thread#           HEADING  "T#"                FORMAT 999
+COLUMN sequence#         HEADING  "SEQ#"              FORMAT 99999999
+COLUMN applied           HEADING  "APPLIED"           FORMAT a3
+COLUMN FIRST_TIME        HEADING  "FIRST_TIME"        FORMAT a20
+COLUMN NEXT_TIME         HEADING  "NEXT_TIME"         FORMAT a20
+COLUMN COMPLETION_TIME   HEADING  "COMPLETION_TIME"   FORMAT a20
+COLUMN size_mb           HEADING  "SIZE_MB"           FORMAT 99,999
+COLUMN delay_in_shipping HEADING  "Delay in Shipping" FORMAT a20
+
+/*
+* Not using WITH clause (aka CTE aka sub-query refactor'ing
+*  , as it does not work on standby database in MOUNT mode and only works in OPEN mode.
+*/
+
+select l.thread#
+     , l.sequence#
+     , l.applied
+     , l.deleted
+     , l.status
+     , l.archived
+     , TO_CHAR(l.first_time,'DD-MON-YY HH24:MI:SS')       first_time
+     , TO_CHAR(l.next_time,'DD-MON-YY HH24:MI:SS')        next_time
+     , ROUND((l.blocks * l.block_size)/power(1024,2))     size_mb
+     , l.fal
+     , l.creator
+     , l.registrar
+     , TO_CHAR(l.completion_time,'DD-MON-YY HH24:MI:SS')  completion_time
+     ,     LPAD(FLOOR(l.completion_time-l.next_time)                             ,2) || 'd ' 
+        || LPAD(FLOOR(MOD((l.completion_time-l.next_time)      ,1) * 24 ),2) || 'h ' 
+        || LPAD(FLOOR(MOD((l.completion_time-l.next_time)*24   ,1) * 60 ),2) || 'm ' 
+        || LPAD(FLOOR(MOD((l.completion_time-l.next_time)*24*60,1) * 60 ),2) || 's' delay_in_shipping
+from v$archived_log l 
+WHERE 1=1
+  AND l.dest_id = 1
+  AND l.first_time > sysdate - (&&HOURS/24)
+  AND (l.completion_time-l.next_time) * 24 * 60 > &&LagMinutes
+order by l.first_time
+;
+
+
+
+
+@@footer