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Oracle: get the tablespace structure

admin — Thu, 19 Jan 2012 09:35:11 +0000

The easiest method to get the tablespace structure is to use the dbms_metadata package:

SET linesize 200 LONG 50000 pagesize 5000

SELECT dbms_metadata.get_ddl('TABLESPACE',tablespace_name )
FROM dba_tablespaces
WHERE tablespace_name IN ( '&your_tablespace' );

Additionally, exp/imp (or expdp/impdp) utilities could be used. They could generate the DDL statements for all objects in the database, which could be very useful.

exp/imp

exp userid=" '/ as sysdba' " rows=n file=my.dmp full=y
imp userid=" '/ as sysdba' " file=my.dmp full=y show=y > full_structure.sql 2>&1

Warning! exp could not get the contents of the encrypted tablespaces.

expdp/impdp

expdp "'/ as sysdba'" dumpfile=mydp.dmp directory=DATA_PUMP_DIR content=metadata_only full=y
impdp "'/ as sysdba'" dumpfile=mydp.dmp directory=DATA_PUMP_DIR sqlfile=full_structure.sql

Oracle: usage of the tablespaces

admin — Sun, 03 Jan 2010 00:16:07 +0000

SET pagesize 10000

SET COLSEP '|'
SET VERIFY off
SET serveroutput ON SIZE 1000000
BREAK ON report

COLUMN tablespace_name format a30 heading 'TABLESPACE'
COLUMN sizegb format 9999999999D9 heading 'SIZE-Gb'
COLUMN usedproc format 999D99 heading 'USED-%'
COLUMN status format a10 heading 'STATUS'
COMPUTE SUM LABEL 'Total size:' OF sizegb ON report

SELECT b.tablespace_name ,
b.bytes/1024/1024/1024 AS sizegb ,
NVL(100-((a.bytes/b.bytes)*100), 100) usedproc,
REPLACE(c.status,' ','_') status
FROM
( SELECT tablespace_name,
SUM(bytes) bytes
FROM dba_free_space
GROUP BY tablespace_name
) a ,
( SELECT tablespace_name,
SUM(bytes) bytes
FROM dba_data_files
GROUP BY tablespace_name
) b ,
dba_tablespaces c
WHERE b.tablespace_name = a.tablespace_name (+)
AND b.tablespace_name = c.tablespace_name
UNION
SELECT f.TABLESPACE_NAME,
f.TOTAL_MB/1024 sizegb,
NVL( (u.USED_MB/f.TOTAL_MB)*100, 0 ) usedproc,
'TEMPORARY' status
FROM
(
SELECT f1.TABLESPACE_NAME,SUM( f1.BYTES/1024/1024 ) TOTAL_MB
FROM (
SELECT TABLESPACE_NAME,BYTES
FROM dba_temp_files
UNION ALL
SELECT TABLESPACE_NAME,BYTES
FROM dba_data_files
WHERE TABLESPACE_NAME IN (
SELECT TABLESPACE_NAME
FROM dba_tablespaces
WHERE CONTENTS='TEMPORARY'
)
) f1
GROUP BY f1.TABLESPACE_NAME
) f,
(
SELECT u1.TABLESPACE,
SUM(u1.blocks) * MAX((SELECT VALUE FROM v$parameter WHERE name='db_block_size')/1024/1024) USED_MB
FROM v$sort_usage u1
GROUP BY u1.TABLESPACE
) u
WHERE f.TABLESPACE_NAME = u.TABLESPACE (+)
ORDER BY 1;

List the tablespaces in backup mode

admin — Tue, 15 Sep 2009 22:04:23 +0000

Small query to list Oracle tablespaces, that are in backup mode:

SELECT d.tablespace_name, b.TIME
FROM dba_data_files d, v$backup b
WHERE
d.file_id = b.FILE#
AND b.STATUS = 'ACTIVE' ;