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求oracle中建用户表空间,

摘要: 求oracle中建用户表空间,


如何在oracle中建用户表空间,建同义词;等常用oracle管理语句,email:wljack188@163.com;收到马上给分!!


CREATE TABLESPACE TBS_TEST
DATAFILE 'D:/ORADATA/ORA92/TEST.DBF' SIZE 50M;


日志管理

  1.forcing log switches

  sql> alter system switch logfile;

  2.forcing checkpoints

  sql> alter system checkpoint;

  3.adding online redo log groups

  sql> alter database add logfile [group 4]

  sql> ('/disk3/log4a.rdo','/disk4/log4b.rdo') size 1m;

  4.adding online redo log members

  sql> alter database add logfile member

  sql> '/disk3/log1b.rdo' to group 1,

  sql> '/disk4/log2b.rdo' to group 2;

  5.changes the name of the online redo logfile

  sql> alter database rename file 'c:/oracle/oradata/oradb/redo01.log'

  sql> to 'c:/oracle/oradata/redo01.log';

  6.drop online redo log groups

  sql> alter database drop logfile group 3;

  7.drop online redo log members

  sql> alter database drop logfile member 'c:/oracle/oradata/redo01.log';

  8.clearing online redo log files

  sql> alter database clear [unarchived] logfile 'c:/oracle/log2a.rdo';

  9.using logminer analyzing redo logfiles

  a. in the init.ora specify utl_file_dir = ' '

  b. sql> execute dbms_logmnr_d.build('oradb.ora','c:/oracle/oradb/log');

  c. sql> execute dbms_logmnr_add_logfile('c:/oracle/oradata/oradb/redo01.log',

  sql> dbms_logmnr.new);

  d. sql> execute dbms_logmnr.add_logfile('c:/oracle/oradata/oradb/redo02.log',

  sql> dbms_logmnr.addfile);

  e. sql> execute dbms_logmnr.start_logmnr(dictfilename=>'c:/oracle/oradb/log/oradb.ora');

  f. sql> select * from v$logmnr_contents(v$logmnr_dictionary,v$logmnr_parameters

  sql> v$logmnr_logs);

  g. sql> execute dbms_logmnr.end_logmnr;

表空间管理

  1.create tablespaces

  sql> create tablespace tablespace_name datafile 'c:/oracle/oradata/file1.dbf' size 100m,

  sql> 'c:/oracle/oradata/file2.dbf' size 100m minimum extent 550k [logging/nologging]

  sql> default storage (initial 500k next 500k maxextents 500 pctinccease 0)

  sql> [online/offline] [permanent/temporary] [extent_management_clause]

  2.locally managed tablespace

  sql> create tablespace user_data datafile 'c:/oracle/oradata/user_data01.dbf'

  sql> size 500m extent management local uniform size 10m;

  3.temporary tablespace

  sql> create temporary tablespace temp tempfile 'c:/oracle/oradata/temp01.dbf'

  sql> size 500m extent management local uniform size 10m;

  4.change the storage setting

  sql> alter tablespace app_data minimum extent 2m;

  sql> alter tablespace app_data default storage(initial 2m next 2m maxextents 999);

  5.taking tablespace offline or online

  sql> alter tablespace app_data offline;

  sql> alter tablespace app_data online;

  6.read_only tablespace

  sql> alter tablespace app_data read only|write;

  7.droping tablespace

  sql> drop tablespace app_data including contents;

  8.enableing automatic extension of data files

  sql> alter tablespace app_data add datafile 'c:/oracle/oradata/app_data01.dbf' size 200m

  sql> autoextend on next 10m maxsize 500m;

  9.change the size fo data files manually

  sql> alter database datafile 'c:/oracle/oradata/app_data.dbf' resize 200m;

  10.Moving data files: alter tablespace

  sql> alter tablespace app_data rename datafile 'c:/oracle/oradata/app_data.dbf'

  sql> to 'c:/oracle/app_data.dbf';

  11.moving data files:alter database

  sql> alter database rename file 'c:/oracle/oradata/app_data.dbf'

  sql> to 'c:/oracle/app_data.dbf';
用户管理

  1.create a user: database authentication

  sql> create user juncky identified by oracle default tablespace users

  sql> temporary tablespace temp quota 10m on data password expire

  sql> [account lock|unlock] [profile profilename|default];

  2.change user quota on tablespace

  sql> alter user juncky quota 0 on users;

  3.drop a user

  sql> drop user juncky [cascade];

  4. monitor user

  view: dba_users , dba_ts_quotas

备份与恢复

  1. v$sga,v$instance,v$process,v$bgprocess,v$database,v$datafile,v$sgastat

  2. Rman need set dbwr_IO_slaves or backup_tape_IO_slaves and large_pool_size

  3. Monitoring Parallel Rollback

  > v$fast_start_servers , v$fast_start_transactions

  4.perform a closed database backup (noarchivelog)

  > shutdown immediate

  > cp files /backup/

  > startup

  5.restore to a different location

  > connect system/manager as sysdba

  > startup mount

  > alter database rename file '/disk1/../user.dbf' to '/disk2/../user.dbf';

  > alter database open;

  6.recover syntax

  --recover a mounted database

  >recover database;

  >recover datafile '/disk1/data/df2.dbf';

  >alter database recover database;

  --recover an opened database

  >recover tablespace user_data;

  >recover datafile 2;

  >alter database recover datafile 2;

  7.how to apply redo log files automatically

  >set autorecovery on

  >recover automatic datafile 4;

  8.complete recovery:

  --method 1(mounted databae)

  >copy c:/backup/user.dbf c:/oradata/user.dbf

  >startup mount

  >recover datafile 'c:/oradata/user.dbf;

  >alter database open;

  --method 2(opened database,initially opened,not system or rollback datafile)

  >copy c:/backup/user.dbf c:/oradata/user.dbf (alter tablespace offline)

  >recover datafile 'c:/oradata/user.dbf' or

  >recover tablespace user_data;

  >alter database datafile 'c:/oradata/user.dbf' online or

  >alter tablespace user_data online;

  --method 3(opened database,initially closed not system or rollback datafile)

  >startup mount

  >alter database datafile 'c:/oradata/user.dbf' offline;

  >alter database open

  >copy c:/backup/user.dbf d:/oradata/user.dbf

  >alter database rename file 'c:/oradata/user.dbf' to 'd:/oradata/user.dbf'

  >recover datafile 'e:/oradata/user.dbf' or recover tablespace user_data;

  >alter tablespace user_data online;

  --method 4(loss of data file with no backup and have all archive log)

  >alter tablespace user_data offline immediate;

  >alter database create datafile 'd:/oradata/user.dbf' as 'c:/oradata/user.dbf''

  >recover tablespace user_data;

  >alter tablespace user_data online

  5.perform an open database backup

  > alter tablespace user_data begin backup;

  > copy files /backup/

  > alter database datafile '/c:/../data.dbf' end backup;

  > alter system switch logfile;

  6.backup a control file

  > alter database backup controlfile to 'control1.bkp';

  > alter database backup controlfile to trace;

  7.recovery (noarchivelog mode)

  > shutdown abort

  > cp files

  > startup

  8.recovery of file in backup mode

  >alter database datafile 2 end backup;

  9.clearing redo log file

  >alter database clear unarchived logfile group 1;

  >alter database clear unarchived logfile group 1 unrecoverable datafile;

  10.redo log recovery

  >alter database add logfile group 3 'c:/oradata/redo03.log' size 1000k;

  >alter database drop logfile group 1;

  >alter database open;

  or >cp c:/oradata/redo02.log' c:/oradata/redo01.log

  >alter database clear logfile 'c:/oradata/log01.log';


dddddddd


▲创建表空间
①查看现有表空间信息
SELECT a.file_id,a.tablespace_name,a.bytes/1024/1024 as "Total(MB)",
sum(nvl(b.bytes,0))/1024/1024 as "Free(MB)",sum(nvl(b.bytes,0))/a.bytes*100 as "%free"
FROM dba_data_files a,dba_free_space b
WHERE a.file_id=b.file_id(+)
GROUP BY a.tablespace_name,a.file_id,a.bytes
ORDER BY a.tablespace_name;
②手工创建表空间
CREATE TABLESPACE 表空间名称
DATAFILE
'文件名' [SIZE 数目 [K|M] ] [REUSE]
[AUTOEXTEND
{OFF | ON
MAXSIZE { UNLIMITED | 数目 [K|M] } ] } ]
[, ...其它数据文件...]
[ONLINE | OFFLINE]
[PERMANENT | TEMPORARY]
[MANAGEMENT LOCAL | DICTIONARY]
/*详见《ORACLE 9I入门与提高》P182*/
例:
CREATE TABLESPACE USERNAME_DATA
DATAFILE
'C:/Oracle8/DATABASE/USERNAME_data.dbf' SIZE 256M REUSE--REUSE覆盖原数据文件
AUTOEXTEND ON NEXT 2M MAXSIZE 2048M--允许表空间自动扩允,每次增加2M,空间最大值2G
DEFAULT STORAGE(--设置存储默认值
INITIAL 64K--分配给对象的初始空间大小
NEXT 64K--每次增加大小,通常与INITIAL值相同
MINEXTENTS 1--多数情况取值为1
MAXEXTENTS UNLIMITED--目前设置为"对象大小无限制"
PCTINCREASE 0--通常情况取值为0
)
ONLINE
PERMANENT;
-------------------------------------------
SQL> SELECT a.file_id,a.tablespace_name,a.bytes/1024/1024 as "Total(MB)",
2 sum(nvl(b.bytes,0))/1024/1024 as "Free(MB)",sum(nvl(b.bytes,0))/a.bytes*100 as "%free"
3 FROM dba_data_files a,dba_free_space b
4 WHERE a.file_id=b.file_id(+)
5 GROUP BY a.tablespace_name,a.file_id,a.bytes
6 ORDER BY a.tablespace_name;

FILE_ID TABLESPACE_NAME Total(MB) Free(MB) %free
---------- ------------------------------ ---------- ---------- ----------
3 ROLLBACK_DATA 10 5.31054687 53.1054687
1 SYSTEM 60 6.203125 10.3385416
4 TEMPORARY_DATA 2 1.99804687 99.9023437
2 USER_DATA 3 1.5234375 50.78125

SQL>
SQL> CREATE TABLESPACE USERNAME_DATA
2 DATAFILE
3 'C:/Oracle8/DATABASE/USERNAME_data.dbf' SIZE 256M REUSE--REUSE覆盖原数据文件
4 AUTOEXTEND ON NEXT 2M MAXSIZE 2048M--允许表空间自动扩允,每次增加2M,空间最大值2G
5 DEFAULT STORAGE(
6 INITIAL 64K--分配给对象的初始空间大小
7 NEXT 64K--每次增加大小,通常与INITIAL值相同
8 MINEXTENTS 1--多数情况取值为1
9 MAXEXTENTS UNLIMITED--目前设置为"对象大小无限制"
10 PCTINCREASE 0--通常情况取值为0
11 )
12 ONLINE
13 PERMANENT;

表空间被创建

SQL>
SQL> SELECT a.file_id,a.tablespace_name,a.bytes/1024/1024 as "Total(MB)",
2 sum(nvl(b.bytes,0))/1024/1024 as "Free(MB)",sum(nvl(b.bytes,0))/a.bytes*100 as "%free"
3 FROM dba_data_files a,dba_free_space b
4 WHERE a.file_id=b.file_id(+)
5 GROUP BY a.tablespace_name,a.file_id,a.bytes
6 ORDER BY a.tablespace_name;

FILE_ID TABLESPACE_NAME Total(MB) Free(MB) %free
---------- ------------------------------ ---------- ---------- ----------
5 USERNAME_DATA 256 255.998046 99.9992370
3 ROLLBACK_DATA 10 5.31054687 53.1054687
1 SYSTEM 60 6.19335937 10.3222656
4 TEMPORARY_DATA 2 1.99804687 99.9023437
2 USER_DATA 3 1.5234375 50.78125

SQL>
③修改表空间
ALTER TABLESPACE 表空间名称
{[COALESCE]
[PERMANENT | TEMPORARY]
[READ ONLY | READ WRITE]
[ONLINE]
[OFFLINE [NORMAL | TEMPORARY |IMMEDIATE | FOR RECOVER]]
[MINMUM EXTENT 数目 [K|M] ]
[DEFAULT 存储参数语句]
[数据文件语句]
}
/*详见《ORACLE 9I入门与提高》P186*/
-------------------------------------------
例:增加表空间大小
ALTER TABLESPACE INDEX_RPT ADD
DATAFILE '/dev/vg_ora5/rdata_1g_172' SIZE 1023M;
例:改变表空间数据文件大小
ALTER TABLESPACE USERNAME_DATA
DATAFILE 'C:/Oracle8/DATABASE/USERNAME_DATA.DBF' RESIZE 250K;

④撤消空间
ALTER TABLESPACE USERNAME_DATA OFFLINE;
DROP TABLESPACE USERNAME_DATA;




oracle help' document


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