Purge undo tablespace oracle 11g

-- 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

Similar codes

0 vote110 views1 answer
Alter session set nls_language french
SQL
1 vote109 views1 answer
Database run
SQL
0 vote151 views1 answer
Create a PostgreSQL user django on mac
SQL
3 votes159 views2 answers
Syntax error or access violation: 1701 Cannot truncate a table referenced in a foreign key constraint
SQL
0 vote196 views1 answer
Sqlalchemy orm duplicate
SQL
16 votes147 views1 answer
Mysql reset auto increment value
SQL
0 vote199 views1 answer
Sql alter table add column if exists
SQL
1 vote149 views1 answer
ORA-01950
SQL
1 vote100 views1 answer
Metada in sql
SQL
-1 vote159 views1 answer
Add bool column in sql
SQL