用戶查詢

查詢和用戶相關(guān)的數(shù)據(jù)

創(chuàng)建用戶

CREATE USER user

IDENTIFIED BY password

[DEFAULT TABLESPACE tablespace]

[TEMPORARY TABLESPACE tablespace]

查詢所有用戶數(shù)

select username from dba_users;

查詢當(dāng)前實(shí)例名稱

select instance_name from v$instance;

表空間查詢

查詢用戶表空間和臨時(shí)表空間相關(guān)的數(shù)據(jù)

用戶表空間

創(chuàng)建表空間

CREATE TABLESPACE tbs_01

DATAFILE ‘demo.dbf‘

SIZE 40M

AUTOEXTEND ON NEXT 5M MAXSIZE 100M

ONLINE

LOGGING

EXTENT MANAGEMENT LOCAL UNIFORM SIZE 2M

SEGMENT SPACE MANAGEMENT AUTO;

查詢表空間總大小

SELECT TABLESPACE_NAME, FILE_ID, FILE_NAME, BYTES/1024/1024 AS "BYTES(M)" FROM DBA_DATA_FILES

查詢表空間剩余大小

SELECT

tablespace_name,

SUM(bytes) / (1024 * 1024) AS free_space

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;

臨時(shí)表空間

查詢臨時(shí)表空間大小

SELECT

TABLESPACE_NAME,

FILE_ID,

FILE_NAME,

BYTES/1024/1024 AS "SPACE(M)"

FROM

DBA_TEMP_FILES

WHERE

TABLESPACE_NAME = ‘TEMP‘;

創(chuàng)建臨時(shí)表空間

create temporary tablespace temp1 tempfile ‘/u01/app/oracle/oradata/orcl/temp11.dbf‘ size 10M;

縮小臨時(shí)表空間大小

alter database datapfile ‘D:\ORACLE\PRODUCT\10.2.0\ORADATA\TELEMT\TEMP01.DBF‘ resize 100M;

擴(kuò)展臨時(shí)表空間：

增大臨時(shí)文件大小：

alter database tempfile ‘/u01/app/oracle/oradata/orcl/temp01.dbf‘ resize 100m;

將臨時(shí)數(shù)據(jù)文件設(shè)為自動擴(kuò)展：

alter database tempfile ‘/u01/app/oracle/oradata/orcl/temp01.dbf‘ autoextend on next 5m maxsize unlimited;

向臨時(shí)表空間中添加數(shù)據(jù)文件：

alter tablespace temp add tempfile ‘/u01/app/oracle/oradata/orcl/temp02.dbf‘ size 100m;

表查詢

查詢當(dāng)前登錄用戶下所有表名稱

select table_name from user_tables;

查詢某個(gè)表的大小，替換為你的TABLE_NAME

SELECT

SEGMENT_NAME,

round(SUM(BYTES/1024/1024),2)||‘M‘ memory_space

FROM

dba_segments

WHERE

segment_name=‘TABLE_NAME‘

group by SEGMENT_NAME

查詢當(dāng)前登錄用戶所有表的大小

SELECT

SEGMENT_NAME,

ROUND(SUM(BYTES/1024/1024),2)||‘M‘ memory_space

FROM

dba_segments

WHERE

segment_name IN (SELECT table_name FROM user_tables)

GROUP BY

SEGMENT_NAME

ORDER BY memory_space desc;

查詢當(dāng)前用戶下的分區(qū)表

select table_name from user_tables where partitioned=‘YES‘

查詢某個(gè)表的分區(qū)數(shù)

SELECT table_name,partition_name from user_tab_partitions where table_name = ‘TABLE_NAME‘

查詢某個(gè)分區(qū)的數(shù)據(jù)

SELECT * FROM MODULEEVALUATIONHISTORY_PART PARTITION(SYS_P43)

Oracle表和表空間查詢

標(biāo)簽：臨時(shí)文件???default???名稱???and???數(shù)據(jù)???lan???rom???oracle???eva

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