2026-03-12 20:23:15

vdh/undo_usage_10gR2_old.sql

@@ -0,0 +1,89 @@
+set linesize 150
+set pagesize 9999
+set echo off
+set verify off
+
+prompt Enter the begindate in the format DD/MM/YYYY HH24:MI
+accept bdate prompt 'begin date: '
+
+prompt Enter the enddate in the format DD/MM/YYYY HH24:MI
+accept edate prompt 'end date: '
+
+column undo_retention_time format a20
+
+select value undo_retention_time
+from v$parameter
+where name = 'undo_retention';
+
+
+column undo_space format 999G999G999D99
+column max_undo_space format 999G999G999D99
+column undo_tbs format a15
+column q_length format a10
+column tu_length format a12
+
+select sum(bytes)/1024/1024 undo_space, sum(maxbytes)/1024/1024 max_undo_space
+from dba_data_files
+where tablespace_name = 
+        ( select value 
+          from v$parameter 
+          where name = 'undo_tablespace'
+        );
+
+column begin_time format a17
+column end_time format a17
+column retention_undo_usage format 9G999G999D99 heading "Undo ret period"
+column curr_undo_usage format 9G999D99 heading "undo usage"
+column pct_used format 999D99
+column ts_ss format 99D99
+column err format a12
+column maxqueryid format a15
+
+prompt err: unxpstealcnt / ssolderrcnt / nospaceerrcnt
+
+select to_char(begin_time,'DD/MM/YYYY HH24:MI') begin_time, 
+       to_char(end_time,'DD/MM/YYYY HH24:MI') end_time,
+       (select name from v$tablespace where ts# = undotsn) undo_tbs, 
+       curr_undo_usage, retention_undo_usage,
+       (100 * retention_undo_usage /  
+        ( select sum(greatest(bytes,maxbytes))/1024/1024
+          from dba_data_files
+          where tablespace_name = (select name from v$tablespace where ts# = undotsn)
+        )
+       ) pct_used,
+       ts_hh || ':' || ts_mi || ':' || ts_ss q_length,
+       tund_dd || ' ' || tund_hh || ':' || tund_mi || ':' || tund_ss tu_length,
+       maxqueryid, err
+from ( select undotsn,
+              begin_time, end_time, 
+              undoblks * 
+                ( select block_size 
+                  from dba_tablespaces 
+                  where tablespace_name = (select name from v$tablespace where ts# = undotsn)
+                ) /1024/1024 curr_undo_usage,
+              sum(undoblks)
+                over 
+                    ( order by end_time 
+                      range ( tuned_undoretention/24/60/60 
+--                              from v$parameter 
+--                              where name = 'undo_retention'
+                            ) preceding
+                    )
+                * ( select block_size 
+                    from dba_tablespaces 
+                    where tablespace_name = (select name from v$tablespace where ts# = undotsn)
+                  ) /1024/1024 retention_undo_usage,
+                  decode(maxquerylen, 0, 0, extract(hour from (systimestamp + maxquerylen/24/60/60 - systimestamp))) ts_hh,
+                  decode(maxquerylen, 0, 0, extract(minute from (systimestamp + maxquerylen/24/60/60 - systimestamp))) ts_mi,
+                  decode(maxquerylen, 0, 0, floor(extract(second from (systimestamp + maxquerylen/24/60/60 - systimestamp)))) ts_ss,
+                  decode(tuned_undoretention, 0, 0, extract(day from (systimestamp + tuned_undoretention/24/60/60 - systimestamp))) tund_dd,
+                  decode(tuned_undoretention, 0, 0, extract(hour from (systimestamp + tuned_undoretention/24/60/60 - systimestamp))) tund_hh,
+                  decode(tuned_undoretention, 0, 0, extract(minute from (systimestamp + tuned_undoretention/24/60/60 - systimestamp))) tund_mi,
+                  decode(tuned_undoretention, 0, 0, floor(extract(second from (systimestamp + tuned_undoretention/24/60/60 - systimestamp)))) tund_ss,
+                  maxqueryid, unxpstealcnt || '/' || ssolderrcnt  || '/' || nospaceerrcnt err
+       from v$undostat 
+) U
+where begin_time >= to_date('&bdate', 'DD/MM/YYYY HH24:MI')
+      and end_time <= to_date('&edate', 'DD/MM/YYYY HH24:MI')
+order by U.begin_time;
+