How to view table space in oracle-Oracle-php.cn

How to check the table space in oracle: 1. Check the name and size of the table space through the "SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size..." command ;2. Use the "SELECT tablespace_name, file_id, file_name, round(...)..." command to view the name and size of the physical file in the table space.

How to view table space in oracle

The operating environment of this tutorial: Windows 7 system, Oracle 11g version, Dell G3 computer.

How to view table space in oracle?

Oracle View table space and size

--1. View the name and size of the table space

SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size FROM dba_tablespaces t, dba_data_files d WHERE t.tablespace_name = d.tablespace_name GROUP BY t.tablespace_name;

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--2. View The name and size of the table space physical file

SELECT tablespace_name, file_id, file_name, round(bytes / (1024 * 1024), 0) total_space FROM dba_data_files ORDER BY tablespace_name;

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--3. View the name and size of the rollback segment

SELECT segment_name, tablespace_name, r.status, (initial_extent / 1024) initialextent, (next_extent / 1024) nextextent, max_extents, v.curext curextent FROM dba_rollback_segs r, v$rollstat v WHERE r.segment_id = v.usn(+) ORDER BY segment_name;

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--4. View the control file

SELECT NAME FROM v$controlfile;

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--5 , Check the log file

SELECT MEMBER FROM v$logfile;

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--6. Check the usage of the table space

SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name FROM dba_free_space GROUP BY tablespace_name; SELECT a.tablespace_name, a.bytes total, b.bytes used, c.bytes free, (b.bytes * 100) / a.bytes "% USED ", (c.bytes * 100) / a.bytes "% FREE " FROM sys.sm$ts_avail a, sys.sm$ts_used b, sys.sm$ts_free c WHERE a.tablespace_name = b.tablespace_name AND a.tablespace_name = c.tablespace_name;

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--7. Check the database object

SELECT owner, object_type, status, COUNT(*) count# FROM all_objects GROUP BY owner, object_type, status;

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--8. Check the database Version

SELECT version FROM product_component_version WHERE substr(product, 1, 6) = 'Oracle';

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--9. View the creation date and archiving method of the database

SELECT created, log_mode, log_mode FROM v$database; --1G=1024MB --1M=1024KB --1K=1024Bytes --1M=11048576Bytes --1G=1024*11048576Bytes=11313741824Bytes SELECT a.tablespace_name "表空间名", total "表空间大小", free "表空间剩余大小", (total - free) "表空间使用大小", total / (1024 * 1024 * 1024) "表空间大小(G)", free / (1024 * 1024 * 1024) "表空间剩余大小(G)", (total - free) / (1024 * 1024 * 1024) "表空间使用大小(G)", round((total - free) / total, 4) * 100 "使用率 %" FROM (SELECT tablespace_name, SUM(bytes) free FROM dba_free_space GROUP BY tablespace_name) a, (SELECT tablespace_name, SUM(bytes) total FROM dba_data_files GROUP BY tablespace_name) b WHERE a.tablespace_name = b.tablespace_name

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Recommended study: "oracle video tutorial"

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