oracle sql语句 创建表空间数据库.docx

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1、oracle sql语句 创建表空间数据库1、查看表空间的名称及大小 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; 2、查看表空间物理文件的名称及大小 select tablespace_name, file_id, file_name, round(bytes/(1024*1024),0

2、) total_space from dba_data_files order by tablespace_name; 3、查看回滚段名称及大小 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 seg

3、ment_name ; 4、查看控制文件 select name from v$controlfile; 5、查看日志文件 select member from v$logfile; 6、查看表空间的使用情况 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

4、% 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; 7、查看数据库库对象 select owner, object_type, status, count(*) count# from all_objects group by owner, object_type, status; 8、查看数据库的

5、版本 Select version FROM Product_component_version Where SUBSTR(PRODUCT,1,6)=Oracle; 9.查看某个表空间内所占空间大于某个值的段: Select segment_name,bytes FROM dba_segments Where bytes10000000 AND tablespace_name=tablespace_name; 10.查看所有表空间的碎片程度 select tablespace_name,sum(bytes),sum(free),sum(free)*100/sum(bytes) from (se

6、lect b.file_id file_ID, b.tablespace_name tablespace_name, b.bytes Bytes, (b.bytes-sum(nvl(a.bytes,0) used, sum(nvl(a.bytes,0) free, sum(nvl(a.bytes,0)/(b.bytes)*100 Percent from dba_free_space a,dba_data_files b where a.file_id=b.file_id group by b.tablespace_name,b.file_id,b.bytes order by b.file_

7、id) group by tablespace_name order by sum(free)*100/sum(bytes); 11.查看自上次数据库启动以来所有数据文件的读写次数 select substr(DF.NAME,1,5) Drive, DF.NAME file_name, (fs.phyblkrd+fs.phyblkwrt) from v$filestat fs,v$datafile df where df.file#=fs.file#; 创建临时表空间： /创建临时表空间 create temporary tablespace mytest tempfile E:/Progra

8、m/oracle/product/10.1.0/oradata/orcl/mytest.dbf size 32m autoextend on next 32m maxsize 1024m extent management local; /创建数据表空间 create tablespace mytest_data logging datafile E:/Program/oracle/product/10.1.0/oradata/orcl/mytest_data.dbf size 32m autoextend on next 32m maxsize 1024m extent management

9、 local; /创建用户并指定表空间 create user testaccount identified by testpwd default tablespace mytest_data temporary tablespace mytest; /给用户授予权限 grant connect,resource to testaccount; (db2：指定所有权限) 12,创建一个用户： CREATE USER username IDENTIFIED BY password OR IDENTIFIED EXETERNALLYOR IDENTIFIED GLOBALLY AS CN=userDEFAULT TABLESPACE tablespaceTEMPORARY TABLESPACE temptablespaceQUOTA integer KM UNLIMITED ON tablespace,QUOTA integer KM UNLIMITED ON tablespacePROFILES profile_namePASSWORD EXPIREACCOUNT LOCK or ACCOUNT UNLOCK； /查看数据库中的所有用户： select * from all_users; /or select * from dba_users