Oracle undotbs usage

-- UNDO tablespace current usage / available space
SELECT a.TABLESPACE_NAME, SIZEMB, USAGEMB, (SIZEMB - USAGEMB) AS FREEMB
FROM (SELECT round(sum(BYTES) / 1e6) AS SIZEMB, b.TABLESPACE_NAME
      FROM DBA_DATA_FILES a, DBA_TABLESPACES b
      WHERE a.TABLESPACE_NAME = b.TABLESPACE_NAME AND b.CONTENTS LIKE 'UNDO'
      GROUP BY b.TABLESPACE_NAME) a,
     (SELECT c.TABLESPACE_NAME, sum(BYTES) / 1e6 AS USAGEMB
      FROM DBA_UNDO_EXTENTS c
      WHERE STATUS <> 'EXPIRED'
      GROUP BY c.TABLESPACE_NAME) b
WHERE a.TABLESPACE_NAME = b.TABLESPACE_NAME;

Source: smarttechways.com

Oracle undotbs usage

-- UNDOTBS usage per User:
SELECT u.TABLESPACE_NAME          AS TABLESPACE,
       s.USERNAME,
       u.STATUS,
       sum(u.BYTES) / 1024 / 1024 AS SUM_IN_MB,
       count(u.SEGMENT_NAME)      AS SEG_CNTS
FROM DBA_UNDO_EXTENTS u, V$TRANSACTION T, V$SESSION s
WHERE T.ADDR = s.TADDR
GROUP BY u.TABLESPACE_NAME, s.USERNAME, u.STATUS
ORDER BY 1, 2, 3;

Similar codes

0 vote239 views1 answer
Php insert null mysql
SQL
6 votes187 views3 answers
POSTGRES INSERT INTO TABLE VALUE FROM OTHER TABLE
SQL
3 votes185 views1 answer
Oracle list privileges
SQL
0 vote174 views1 answer
Sqlite3 get data from table c
SQL
7 votes200 views1 answer
Buy forge mods server hosting
SQL
0 vote198 views2 answers
CREATE OR REPLACE FUNCTION
SQL
9 votes166 views2 answers
Default number in sql
SQL
0 vote188 views1 answer
Mariadb search columns
SQL
0 vote188 views1 answer
The report definition has an invalid target namespace 'http://schemas.microsoft.com/SQLServer/reporting/reportdesigner'
SQL
13 votes177 views6 answers
Current date sql
SQL