Oracle DBA最常用的269条命令

1 运行SQLPLUS工具 
sqlplus

2 以OS的默认身份连接 
/ as sysdba

3 显示当前用户名 
show user

4 直接进入SQLPLUS命令提示符 
sqlplus /nolog

5 在命令提示符以OS身份连接 
connect / as sysdba

6 以SYSTEM的身份连接 
connect system/xxxxxxx@服务名

7 显示当然用户有哪些表 
select * from tab;

8 显示有用户名和帐户的状态 
select username,account_status from dba_users;

9 将SCOTT帐号解锁(加锁) 
alter user scott account unlock(lock);

10 以SCOTT的身份连接并且查看所属表 
connect scott/tiger 
select * from tab;

11 查看EMP的表结构及记录内容 
desc emp 
select empno,ename from emp;

12 以OS的身份登看SGA,共享池,CACHE的信息 
connect / as sysdba 
show sga 
select name,value/1024/1024 from v$sga; 
show parameter shared_pool_size 
select value/1024/1024 from v$parameter where name ='shared_pool_size'; 
show parameter db_cache_size 
select value/1024/1024 from v$parameter where name ='db_cache_size';

13 查看所有含有SIZE的信息 
show parameter size 
bitmap_merge_area_size integer 1048576 
create_bitmap_area_size integer 8388608 
db_16k_cache_size big integer 0 
db_2k_cache_size big integer 0 
db_32k_cache_size big integer 0 
db_4k_cache_size big integer 0 
db_8k_cache_size big integer 0 
db_block_size integer 4096 
db_cache_size big integer 33554432 
db_keep_cache_size big integer 0 
db_recycle_cache_size big integer 0

NAME TYPE VALUE 
------------------------------------ ----------- ------------- 
global_context_pool_size string 
hash_area_size integer 1048576 
java_max_sessionspace_size integer 0 
java_pool_size big integer 33554432 
large_pool_size big integer 8388608 
max_dump_file_size string UNLIMITED 
object_cache_max_size_percent integer 10 
object_cache_optimal_size integer 102400 
olap_page_pool_size integer 33554432 
oracle_trace_collection_size integer 5242880 
parallel_execution_message_size integer 2148

NAME TYPE VALUE 
------------------------------------ ----------- ------------- 
sga_max_size big integer 143727516 
shared_pool_reserved_size big integer 2516582 
shared_pool_size big integer 50331648 
sort_area_retained_size integer 0 
sort_area_size integer 524288 
workarea_size_policy string AUTO

14 显示SGA的信息 
select * from v$sgastat; 
POOL NAME BYTES 
----------- -------------------------- ---------- 
fixed_sga 453532 
buffer_cache 33554432 
log_buffer 656384 
shared pool subheap 46884 
shared pool KGK heap 3756 
shared pool KQR M PO 586792 
shared pool KQR S PO 180232 
shared pool KQR S SO 5128 
shared pool sessions 410720 
shared pool sql area 2144664 
shared pool 1M buffer 2098176

POOL NAME BYTES 
----------- -------------------------- ---------- 
shared pool KGLS heap 901756 
shared pool parameters 8352 
shared pool free memory 38687204 
shared pool PL/SQL DIANA 420816 
shared pool FileOpenBlock 695504 
shared pool PL/SQL MPCODE 135692 
shared pool library cache 2985576 
shared pool miscellaneous 4889396 
shared pool MTTR advisory 21164 
shared pool PLS non-lib hp 2068 
shared pool XDB Schema Cac 4966300

POOL NAME BYTES 
----------- -------------------------- ---------- 
shared pool joxs heap init 4220 
shared pool kgl simulator 563260 
shared pool sim memory hea 44184 
shared pool table definiti 1728 
shared pool trigger defini 1896 
shared pool trigger inform 1140 
shared pool trigger source 448 
shared pool type object de 69120 
shared pool Checkpoint queue 282304 
shared pool VIRTUAL CIRCUITS 265160 
shared pool dictionary cache 1610880

POOL NAME BYTES 
----------- -------------------------- ---------- 
shared pool KSXR receive buffers 1033000 
shared pool character set object 323724 
shared pool FileIdentificatonBlock 323292 
shared pool message pool freequeue 834752 
shared pool KSXR pending messages que 841036 
shared pool event statistics per sess 1718360 
shared pool fixed allocation callback 180 
large pool free memory 8388608 
java pool free memory 33554432

已选择42行。

15 显示PGA的信息 
select * from v$pgastat; 
NAME VALUE UNIT 
---------------------------------------------------------------- ---------- --------- 
aggregate PGA target parameter 16777216 bytes 
aggregate PGA auto target 7640064 bytes 
global memory bound 838656 bytes 
total PGA inuse 8293376 bytes 
total PGA allocated 13106176 bytes 
maximum PGA allocated 22090752 bytes 
total freeable PGA memory 0 bytes 
PGA memory freed back to OS 0 bytes 
total PGA used for auto workareas 0 bytes 
maximum PGA used for auto workareas 4096 bytes 
total PGA used for manual workareas 0 bytes

NAME VALUE UNIT 
---------------------------------------------------------------- ---------- --------- 
maximum PGA used for manual workareas 4096 bytes 
over allocation count 0 
bytes processed 8783872 bytes 
extra bytes read/written 0 bytes 
cache hit percentage 100 percent

已选择16行。

17 在$ORACLE_HOME/sqlplus/admin/glogin.sql中加入环境变量,以后每次启动生效 
define _editor=vi 
set line 2000

18 将当前命令随加到文件中 
save c:a.sql append

19 将指定文件的命读出缓冲区 
get c:a.sql

20 执行脚本语句 
@ c:a.sql

21 将输入保存到指定文件中 
spool c:O.LOG 
select * from v$sga; 
spool off

22 设定行大小 
set linesize 2000

23 设定页大小 
set pagesize 10

24 设定字符列格式 
col ename format a30

25 设定数字列格式 
col sal format 999,999.999

26 10G查看文件$ORACLE_HOME/install/protlist显示端口 
http://127.0.0.1:5560/isqlplus 
9i查看文件$ORACLE_HOME/Apache/Apache/ports.ini显示端口 
http://127.0.0.1:7778/isqlplus 
http://127.0.0.1:7778/isqlplusdba

27 启动Oracle 9i监听程序 
Oracle的监听程序主要是为客户端的连接提供接口 
$ lsnrctl start

28 关闭Oracle 9i监听程序 
$ lsnrctl stop

29 启动Oracle Web Server 
$ cd $ORACLE_HOME/Apache/Apache/bin 
$ ./startJServ.sh 
/database/oracle/product/9i/Apache/Apache/bin/apachectl start: httpd started

30 关闭Oracle Web Server 
$ cd $ORACLE_HOME/Apache/Apache/bin 
$ ./stopJServ.sh 
/database/oracle/product/9i/Apache/Apache/bin/apachectl stop: httpd stopped

31 启动Oracle Web Server后默认的端口号是7777 
unix 
cd $ORACLE_HOME/Apache/Apache/bin/ 
htpasswd $ORACLE_HOME/sqlplus/admin/iplusdba.pw admin 
windows 
cd D:oracleora92ApacheApachebin 
htpasswd D:oracleora92/sqlplus/admin/iplusdba.pw admin 
New password: ***** 
Re-type new password: ***** 
Adding password for user admin

32 pfile: $ORACLE_BASE/admin/实例名/Pfile 
spfile: $ORACLE_HOME/dbs 
监听器配置文件:listener.ora: $ORACLE_HOME/network/admin/ 
tnsnames.ora: $ORACLE_HOME/network/admin/

33 指定用户的表空间 
SELECT DEFAULT_TABLESPACE FROM DBA_USERS WHERE USERNAME='用户名'

34 当前用户 
select user from dual;show user

35 当前用户的缺省表空间 
SELECT DEFAULT_TABLESPACE FROM DBA_USERS WHERE USERNAME=(select user from dual);

37 显示正在使用的初始化参数文件 
show parameter spfile

NAME TYPE VALUE 
------------------------------------ ----------- ------------------------------ 
spfile string %ORACLE_HOME%DATABASESPFILE% 
ORACLE_SID%.ORA 
38 用SPfile转Pfile 
create pfile='c:init.ora' from spfile; 
create pfile from spfile; 
UNIX将生成在$ORACLE_HOME/dbs目录下 
WINDOWS将生成在$ORACLE_HOME/DATABASE目录下

39 显示cache的值 
show parameter cache 
前面两个下划线的是动态调整的参数 
前面一个下划线的是内部参数

40 显示正在使用的参数和文本参数值 
select * from v$parameter; 
select * from v$spparameter;

41 显示动态性能视图的结构 
desc v$parameter; 
名称 
NUM 
NAME 
TYPE 
VALUE 
ISDEFAULT 
ISSES_MODIFIABLE 
ISSYS_MODIFIABLE 
ISMODIFIED 
ISADJUSTED 
DESCRIPTION 
UPDATE_COMMENT

42 有条件的显示动态参数 
select * from v$parameter where name like '%db_cache%';

43 修改参数语句 
alter system set sga_max_size=256m scope=spfile; &&写入SPFILE,重启生效 
alter system set sga_max_size=256m scope=memory; &&写入内存区,立即生效 
alter system set sga_max_size=256m scope=both; &&即写入内存区,又写入SPFILE,默认为BOTH.

44 动态调整large_pool_size的语句 
alter system set large_pool_size=16M;

45 当前正在使用的SGA的大小 
select sum(bytes)/1024/1024 from v$sgastat;

46 设置db_cache_size的大小保存在SPFILE 
alter system set db_cache_size=128m scope=spfile;

47 设置shared_pool_size的大小保存在SPFILE中 
alter system set shared_pool_size=80m scope=spfile;

48 显示PGA的状态 
select * from v$pgastat; 
show parameter pga 
NAME TYPE VALUE 
------------------------------------ ----------- ------------------------------ 
pga_aggregate_target big integer 16777216

49 带PFILE来启动资料库,?代表ORACLE的主目录 
startup pfile=?databaseinitmydb.ora

50 显示当前数据库的状态,mount的状态下就可以查看数据库的状态 
select open_mode from v$database;

51 显示当前实例 nomount状态下就可以查看实例 
select * from v$instance;

52 显示 background_dump_dest的路径 , 
show parameter background_dump_dest 
NAME TYPE VALUE 
------------------------------------ ----------- ------------------------------ 
background_dump_dest string D:oracleadminthwerpbdump

53 显示当有用户的表 
select * from user_tables;

54 显示当有用户可以访问表 
select * from all_tables;

55 显示用户为SCOTT的表 
select * from dba_tables where owner='SCOTT';

56 显示所有用户信息 
select * from dba_users;

57 建立用户并指定密码 
create user edpthw identified by edpthw;

58 给用户授权 
grant connect,resource to edpthw;

59 建立一个表 
create table a(a int);

60 显示数据字典中表名为USER开头的表名 
select table_name from dict where table_name like 'USER%';

61 在UNIX下oerr ora 错误号查看错误的帮助信息.

62 在unix 查看日志中有哪些错误 
grep ORA alert_PROD.log|tail -10

63 显示当前实例 
SELECT * FROM V$INSTANCE;

64 显示当前数据库信息 
SELECT * FROM V$DATABASE;

65 显示当前ORACLR资料的版本 
SELECT * FROM V$VERSION;

66 显示当前的选项 
SELECT * FROM V$OPTION;

67 显示当前实例的初始化参数 
SELECT * FROM V$PARAMETER;

68 显示数据文件 
SELECT * FROM V$DATAFILE;

69 显示日志文件 
SELECT * FROM V$LOGFILE

70 显示控制文件 
SELECT * FROM V$CONTROLFILE;

71 显示当有有哪些会话 
SELECT * FROM V$SESSION;

72 显示当前有哪些进程 
SELECT * FROM V$PROCESS;

73 显示当前后台进程 
SELECT * FROM V$BGPROCESS;

74 显示SGA的大小 
SELECT * FROM V$SGA;

75 显示SGA的统计数 
SELECT * FROM V$SGASTAT;

76 显示PGA的统计数 
SELECT * FROM V$PGASTAT;

77 显示有哪些控制文件 
SHOW PARAMETER CONTROL_FILES;

78 增加一个控制文件一定要在NOMOUNT状态下进行.语句如下. 
alter system set control_files='D:ORADATAMYDBCONTROL01.CTL', 
'D:ORADATAMYDBCONTROL02.CTL', 
'D:ORADATAMYDBCONTROL03.CTL', 
'E:CONTROL04.CTL' SCOPE=SPFILE;

alter system set control_files='D:oracleoradatathwerpCONTROL01.CTL', 
'D:oracleoradatathwerpCONTROL02.CTL', 
'D:oracleoradatathwerpCONTROL03.CTL', 
'D:oracleoradatathwerpCONTROL04.CTL' scope=spfile;

79 数据重新启动 
STARTUP FORCE

80 显示当前控制文件 
SELECT * FROM V$CONTROLFILE; 
SHOW PARAMETER CONTROL

81 删除一个控制文件 
alter system set control_files='D:ORADATAMYDBCONTROL01.CTL', 
'D:ORADATAMYDBCONTROL02.CTL', 
'D:ORADATAMYDBCONTROL03.CTL' SCOPE=SPFILE

82 显示当前使用的日志 
SELECT * FROM V$LOG;

83 显示实例的归档模式 
ARCHIVE LOG LIST;

84 显示重做日志文件 
SELECT * FROM V$LOGFILE;

85 手工切换重做日志文件 
ALTER SYSTEM SWITCH LOGFILE;

86 发出检查点 
ALTER SYSTEM CHECKPOINT;

87 显示重做日期的历史记录 
select * from v$log_history;

88 更改会语的日期格式 
alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';

89 增加日志组 
ALTER DATABASE ADD LOGFILE GROUP 4 ( 'D:ORADATAMYDBredo4.log') SIZE 10240K;

92 删除日志组 
ALTER DATABASE DROP LOGFILE GROUP 4 ;

90 增加日志组成员 
ALTER DATABASE ADD LOGFILE MEMBER 'D:ORADATAMYDBredo11.log' TO GROUP 1;

91 删除日志组成员 
ALTER DATABASE DROP LOGFILE MEMBER 'D:ORADATAMYDBredo14.log' ;

92 显示系统表空间 
select * from dba_tablespaces;

93 显示系统表空间所拥有的文件 
select * from dba_data_files;

94 显示系统临时表空间 
select * from dba_temp_files;

95 显示表空间的已被使用多少 
select tablespace_name,sum(bytes)/1024/1024 m 
from dba_data_files group by tablespace_name;

96 显示表空间还有多少没有使用 
select tablespace_name, 
sum(bytes)/1024/1024 m 
from dba_free_space group by tablespace_name;

97 创建表空间 
10G CREATE BIGFILE TABLESPACE "MYTBS1" DATAFILE 'D:ORADATAMYDBmytbs_01.dbf' SIZE 100M LOGGING EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO ; 
9I CREATE TABLESPACE "MYTBS1" DATAFILE 'D:oracleORADATAthwerpmytbs_01.dbf' SIZE 100M LOGGING EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO ; 
CREATE SMALLFILE TABLESPACE "MYTBS1" DATAFILE 'D:ORADATAMYDBmytbs_01.dbf' SIZE 100M , 'D:ORADATAMYDBmytbs02.dbf' SIZE 100M LOGGING EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO;

98 在指字表空间里建表 
create table t1 (a int) tablespace mytbs1;

99 在指字表空间里建索引 
create index t1_ind on t1(a) tablespace mytbs1;

100 在指定表空间里增加数据文件 
ALTER TABLESPACE "MYTBS1" ADD DATAFILE 'D:ORADATAMYDBmytbs03.dbf' SIZE 100M

100 修改表空间的大小 
ALTER DATABASE DATAFILE 'D:ORADATAMYDBMYTBS_01.DBF' RESIZE 200M

101 表空间改文件的自动扩展 
ALTER DATABASE DATAFILE 'D:ORADATAMYDBMYTBS03.DBF' AUTOEXTEND ON NEXT 5M MAXSIZE UNLIMITED

102 删除表空间和表空间所属文件 
drop tablespace mytbs1 including contents and datafiles;

103 建立临时表空间 
CREATE SMALLFILE TEMPORARY TABLESPACE "MYTEMP" TEMPFILE 'D:oracleORADATAthwerpmytemp01.dbf' SIZE 200M AUTOEXTEND ON NEXT 10M MAXSIZE UNLIMITED EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1M 
CREATE TEMPORARY TABLESPACE "MYTEMP" TEMPFILE 'D:oracleORADATAthwerpmytemp01.dbf' SIZE 200M AUTOEXTEND ON NEXT 10M MAXSIZE UNLIMITED EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1M

104 更改用户的临时表空间 
ALTER USER "GARY" TEMPORARY TABLESPACE "MYTEMP"

105 设置成默认的表空间 
ALTER DATABASE DEFAULT TEMPORARY TABLESPACE "MYTEMP"

106 创建临时表空间组 
ALTER TABLESPACE MYTEMP TABLESPACE GROUP MYTEMP_GROUP 
ALTER TABLESPACE TEMP TABLESPACE GROUP MYTEMP_GROUP

107 创建重做表空间 
CREATE UNDO TABLESPACE "MYUNDO" DATAFILE 'D:ORADATAMYDBmyundo01.dbf' SIZE 200M

108 显示重做参数 
show parameter undo

109 回滚段的使用情况 
select * from dba_rollback_segs;

110 更改重做表空间 
alter system set undo_tablespace=myundo;

111 建立一个表 
create table a tablespace users as select * from dba_objects;

112 插入一些记录 
insert into a select * from a;

113 有条件查询表名放在哪个表空间 
select * from dba_tables where table_name='A' and owner='SYS';

114 有条件查询段名放在哪个表空间 
select * from dba_segments where segment_name='A' and owner='SYS';

115 查询有哪些段类型 
select distinct segment_type from dba_segments;

116 查询段和表空间的对应关系 
select * from dba_extents where segment_name='A' and owner='SYS';

117 建立一个16K表空间 
CREATE TABLESPACE "MYTBS3" DATAFILE 'D:oracleORADATAthwerpmytbs3.dbf' SIZE 100M LOGGING EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO BLOCKSIZE 16384;

118 指字参数建立表 
create table b (a int,b varchar2(10)) tablespace users INITRANS 2 PCTFREE 5;

119 显示当前所使用的块大小 
show parameter block_size;

120 释放表的高水位的空间 
alter table a deallocate unused;

121 高水位前移.速度快 
truncate table a;

122 分配空间给表 
alter table a allocate extent (datafile 'D:ORADATAMYDBusers01.dbf' size 1m);

123 指定参数建立表 
create table C (a int) tablespace system pctfree 10 pctused 60 storage(freelists 2); 
CREATE TABLE "SYS"."D" ( "A" VARCHAR2(10)) TABLESPACE "SYSTEM" PCTFREE 5 PCTUSED 60 INITRANS 2 MAXTRANS 100 STORAGE ( FREELISTS 2) 
124 生成一个测试表 
create table a tablespace users as select * from dba_objects;

125 查看表行的物理地址 
select rowid form a;

126 用包的命令查看表行的物理地址 
select DBMS_ROWID.ROWID_RELATIVE_FNO(ROWID),DBMS_ROWID.ROWID_BLOCK_NUMBER(ROWID),DBMS_ROWID.ROWID_ROW_NUMBER(ROWID) FROM A

127 建立表索引 
CREATE INDEX A_IND ON A(OBJECT_NAME) TABLESPACE MYTBS2;

128 查看表的索引 
SELECt * FROM DBA_INDEXES WHERE TABLE_NAME='A'; 
SELECT * FROM DBA_SEGMENTS WHERE SEGMENT_NAME='A_IND';

129 移动重组表空间 
ALTER TABLE A MOVE TABLESPACE USERS;

130 重建表索引 
ALTER INDEX A_IND REBUILD;

131 设置行可以内部移动属性 
ALTER TABLE A ENABLE ROW MOVEMENT;

132 在原地进行行的移动 
ALTER TABLE A SHRINK SPACE;

133 查看表所存储的信息 
SELECT BYTES FORM DBA_SEGMENTS WHERE SEGMENT_NAME='A'; 
SELECT OWNER,SEGMENT_NAME,BYTES FROM DBA_SEGMENTS WHERE SEGMENT_NAME='A';

134 截取表 
TRUNCATE TABLE A;

135 删除表 
DROP TABLE A CASCADE CONSTRAINTS;

136 显示垃圾桶(10G才有) 
show recyclebin 
SELECT * FROM DBA_RECYCLEBIN; 
SELECT * FROM USER_RECYCLEBIN;

137 恢复已删除的表 
flashback table a to before drop;

138 恢复较早已前的已删除的表 
flashback table "BIN$hWrBq1irS0COp10n22NZJg==$0" to before drop rename to a1;

139 查询指定表的索引 
select * from dba_indexs where table_name='A';

140 清除垃圾桶 
PURGE RECYCLEBIN; 
PURGE DBA_RECYCLEBIN;

141 删除表并清除垃圾桶(10G) 
DROP TABLE A PURGE;

142 删除表的列 
ALTER TABLE A DROP COLUMN COMMENTS CASCAGE CONSTRAINTES CHECKPOINT 1000;

143 重命名列 
ALTER TABLE A RENAME COLUMN HIRE_DATE TO START_DATE;

144 标记不可使用的列 
ALTER TABLE A SET UNUSED COLUMN COMMENTS CASCADE CONSTRAINTS;

145 删除不再使用的的列 
ALTER TABLE A DROP UNUSED COLUMNS CHECKPOINT 10000;

146 继续列的删除操作 
ALTER TABLE A DROP COLUMNS CONTINUE CHECKPOINT 10000;

147 增加表的主索引 
ALTER TABLE A ADD PRIMARY KEY (OBJECT_ID);

148 删除表的主索引 
ALTER TABLE A DROP PRIMARY KEY;

149 索引表的主索引并指定索引所使用的表空间 
ALTER TABLE A ADD PRIMARY KEY (OBJECT_ID) USING INDEX TABLESPACE USERS;

150 建立一个普通索引 
CREATE INDEX A_NAME_IND ON A(OWNER,OBJECT_NAME);

151 建立一个函数索引 
SELECT /*+ INDEX(A A_NAME2_IND) */ * FROM A WHERE UPPER(OBJECT_NAME)='A';

152 建立一个位图索引 
CREATE BITMAP INDEX A_NAME_BT ON A(OWNER);

153 查询数据库的信息 
SELECT /*+ INDEX(A A_NAME_BT) */ * FROM A WHERE OWNER='SYS' OR OWNER='SYSTEM'; 
SELECT /*+ FULL(A) */ * FROM A WHERE OWNER='SYS' OR OWNER='SYSTEM';

154 生成一个脚本来建立索引重整 
SELECT 'ALTER INDEX '||INDEX_NAME||' COALESCE;' FROM DBA_INDEXES WHERE TABLE_NAME='A' AND OWNER='SYS' 
SELECT 'ALTER INDEX '||INDEX_NAME||' REBUILD ONLINE;' FROM DBA_INDEXES WHERE TABLE_NAME='A' AND OWNER='SYS'

155 显示所有用户的信息 
SELECT * FROM DBA_USERS;

156 显示当前数据库的用户 
SELECT USERNAME,ACCOUNT_STATUS,DEFAULT_TABLESPACE,TEMPORARY_TABLESPACE FROM DBA_USERS;

160 建立一个新用户 
create user edpthw identified by "123456" 
default tablespace users 
temporary tablespace temp 
quota unlimited on users 
quota 10m on mytbs2;

161 查询限额信息 
select * from dba_ts_quotas; 
select * from user_ts_quotas;

162 用户改密码 
alter user edpthw identified by edpthw;

163 锁用户 
alter user edpthw account lock;

164 使密码过期,迫使改下一次进入改密码 
alter user edpthw password expire;

165 取消限额 
alter user edpthw quota unlimited on mytbs2;

166 删除用户 
drop user hmtong cascade;

167 授权用户 
grant create session,create table,create view to edpthw;

168 分别授权 
GRANT CREATE ANY TABLE TO "hmtong" 
GRANT CREATE TABLE TO "hmtong" 
GRANT DROP ANY TABLE TO "hmtong" 
GRANT SELECT ANY TABLE TO "hmtong"

169 折消授权 
REVOKE UNLIMITED TABLESPACE FROM "hmtong"

170 对象授权 
GRANT SELECT ON "hmtong"."A" TO "edpthw"

171 折消对象授权 
REVOKE SELECT ON "hmtong"."A" FROM "edpthw"

172 取消进入系统直接用默认密码,而一定要自己输入密码才可以进入 
unix $ORACLE_HOMENETWORKADMINSQLNET.ORA 
windows D:oracleproduct10.1.0Db_1NETWORKADMINSQLNET.ORA 
SQLNET.AUTHENTICATION_SERVICES= (NTS,NONE) 
修改$ORACLE_HOME/network/admin/sqlnet.ora文件 
　　将原有的：SQLNET.AUTHENTICATION_SERVICES= (NTS) 
　　改为:SQLNET.AUTHENTICATION_SERVICES= (NONE) 
　　或者直接注释：#SQLNET.AUTHENTICATION_SERVICES= (NTS)

173 查询Pwfile中存放的用户信息 
select * from v$pwfile_users;

174 授权sysdba给指定用户 
grant sysdba to hmtong;

175 取消指定用户的sysdba权限 
revoke sysdba from hmtong;

176 修改系统的授权的属性 
alter system set remote_login_passwordfile=exclusive; 能sysdba登录,能授权 
alter system set remote_login_passwordfile=shared scope=spfile; 只能sysdba登录,不能授权 
alter system set remote_login_passwordfile=NONE; 取消

177 重建口令文件 
orapwd file=PWDmydb.ora password=itpub

178 创建一个用户 
create user hmtong identified by abcdefg;

179 授权连接给指定用户 
GRANT "CONNECT" TO "hmtong"; 
GRANT UNLIMITED TABLESPACE,CONNECT,RESOURCE TO HMTONG;

180 创建表 
create table t1(a int); 
create table t2(a int);

181 查看系统特权 
select * from user_sys_privs;

182 查看对象特权 
select * from user_tab_privs;

183 查看被授予的角色 
select * from user_role_privs;

184 查看角色的有什么权限 
select * from role_sys_privs;

185 查看角色的有哪些表 
select * from role_tab_privs;

186 查看当前会话的权限 
select * from session_privs;

187 监听器的状态 
lsnrctl start 
$ORACLE_HOME/network/admin/listener.ora

188 监听器的启动和关闭 
lsnrctl start [名字] 
lsnrctl stop [名字]

189 监听器的状态和服务信息 
lsnrctl stat 
lsnrctl service

190 配置监听器的工具 
netca 
netmgr

192 动态注册监听器 
alter system register;

193 配置监听器的两个参数 
show parameter local_listener 
show parameter remote_listener

194 追加设置一个服务名,服务名可以多个对应一个实例 
alter system set service_names=mydb,appdb

195 客户连接配置文件 
$ORACLE_HOME/network/admin/tnsname.ora

196 检查指定的监听器是否存在 
TNSPING MYDB

197 将SQLNET.ORA配置好就可以connect system/testdb1@192.168.100.80:1521/testdb1方式连接 
SQLNET.AUTHENTICATION_SERVICES= (NTS,NONE) 
NAMES.DIRECTORY_PATH= (TNSNAMES,EZCONNECT)

198 快速重启资料库 
shutdown immediate

199 将资料库开启到mount的状态 
startup mount

200 显示数据库的归档还是非归档模式 
archive log list 
数据库日志模式 存档模式 
自动存档 禁用 
存档终点 D:oracleora92RDBMS 
最早的概要日志序列 64 
下一个存档日志序列 69 
当前日志序列 69

201 在数据库mount的状态下更改数据库的归档模式 
alter database archivelog; 归档 
alter database noarchivelog; 非归档

202 打开数据库 
alter database open;

203 查看归档的路径的 
SQL> show parameter log_archive_dest_x

204 动态的配置归档路径在两个不同的目录下同时归档 
alter system set log_archive_dest_1='location=e:archive'; 
alter system set log_archive_dest_2='location=d:archive';

205 切换系统的下一个日志文件 
alter system switch logfile; (10G就会产生归档文件)

206 定义自动归档 
alter system set log_archive_start=true scope=spfile; (9i)(10G不用设)

207 查看数据库的归档的信息 
select * from v$log;

208 查看曾经做过哪些归档及路径 
select * from v$archived_log;

209 查看有哪还没有做归档的信息 
select * from v$archive;

210 设置归档路径2暂时不归档和启用归档 
alter system set log_archive_dest_state_2=defer; 
alter system set log_archive_dest_state_2=enable;

211 查看最少路径归档数目的参数 
show parameter log_archive_min_succeed_dest

212 查看归档路径的文件名格式参数 
show parameter log_archive_format

213 查改归档文件名的格式 
alter system set log_archive_format='mydb_%s_%r_%t.log' scope=spfile;

214 显示出快速恢复区的大小和路径 
show parameter db_recovery_file_dest 
show parameter db_recovery_file_dest_size

215 更改归档路径到到快速恢复区 
alter system set log_archive_dest_1='location=use_db_recovery_file_dest';

216 更改快速恢复区的路径 
alter system set db_recovery_file_dest='e:recover';

217 查看快速恢复区的使用情况 
select * from v$recovery_file_dest;

218 更改快速恢复区的大小 
alter system set db_recovery_file_dest_size=10g; 
219 查看数据库的归档模式 
select log_mode from v$database; 
archive log list

220 查看归档文件的归档路径 
show parameter log_archive_dest 
select * from v$archive_dest;

221 查看归档文件 
select * from v$archive;

222 查看曾经归档过的记录 
select * from v$archived_log;

223 启动在线备份表空间 
alter tablespace users begin backup;

224 查询指定表空间的文件路径 
select file_name from dba_data_files where tablespace_name='USERS';

225 在SQL状态上暂时离开返回到SHELL 
host ocopy user*.dbf e:backup

226 结束生成备份表空间 
alter tablespace users end backup;

227 备份数据库的控制文件 
alter database backup controlfile to 'e:backupcontrol01.ctl';

228 生成创建控制文件的脚本 
alter database backup controlfile to trace as 'e:backupcontrol01.sql';

229 查询哪个文件需要恢复 
select * from v$recover_file;

230 查询指定文件号的详细信息 
select * from v$datafile where file#=6;

231 查询有哪些需要归档 
select * from v$recovery_log;

232 恢复指字的数据文件 
recover datafile 6;

233 创建一个例子表 
create table a11 tablespace mytbs3 as select * from dba_objects;

233 查询有没有指定的文件 
select * from dba_extents where file_id=6;

224 自动找到归档日志恢复相应数据文件 
recover AUTOMATIC datafile 6;

225 将一个表空间设置成不可用 
ALTER TABLESPACE USERS OFFLINE IMMEDIATE

226 恢复指定表空间 
RECOVER TABLESPACE USERS;

227 将指定的表文件设置成不可用 
ALTER DATABASE DATAFILE 6 OFFLINE;

228 将指定的表文件设置成在线 
ALTER DATABASE DATAFILE 6 ONLINE;

229 创建一个测试表 
CREATE TABLE TEST (A DATE);

230 插入当前系统日期 
INSERT INTO TEST VALUES(SYSDATE);

231 查询TEST的值 
SELECT * FROM TEST;

232 在注册表里的设置日期格式 
NLS_DATE_FORMAT=YYYY-MM-DD HH24:MI:SS

233 恢复到指定的时间点 
RECOVER DATABASE UNTIL TIME '2006-11-26 10:49:43';

234 打开资料库并重置重做日志 
alter database open resetlogs;

235 恢复控制文件 
RECOVER DATABASE using backup controlfile UNTIL cancel;

236 追加临时表空间 
alter tablespace temp add tempfile 'd:oradatamydbtemp01.dbf' size 10m reuse;

237 Rman的连接 
connect target /

238 显示要备份的数据库文件 
report schema;

239 在RMAN的指定位置来备份文件 
run { 
allocate channel ch1 type disk format 'e:rman%U.bak' maxpiecesize=2g; 
backup database; 
}

240 在RMAN的显示威者默认设置 
show all;

backup database;

241 配置缺省的路径 
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT 'E:RMAN%U.BAK' MAXPIECESIZE 2G;

242 清除缺省配置 
CONFIGURE CHANNEL DEVICE type DISK clear;

243 配置并行数 
CONFIGURE DEVICE TYPE DISK PARALLELISM 2;

244 配置自动备份控制文件 
CONFIGURE CONTROLFILE AUTOBACKUP on;

245 配置有益度 
CONFIGURE RETENTION POLICY TO REDUNDANCY 2;

246 配置可以恢复到7天内的保留窗口 
CONFIGURE RETENTION POLICY TO recovery window of 7;

247 备份表空间 
backup tablespace users;

248 备份数据文件 
backup datafile 6;

249 备份前一天的重做日志 
backup archivelog until time 'sysdate-1';

250 备份SP文件 
backup spfile;

251 备份当前的控制文件 
backup current controlfile;

252 列出所有的备份集 
list backupset ;

253 列出所有的汇总备份集 
list backupset summary;

254 列出具体的备份信息 
list backupset 16

255 删除备份集13 
delete backupset 13;

256 不提示删除所有的备份集 
delete noprompt backupset;

257 凡是USERS的备份都删除 
delete backup of tablespace users;

258 列出哪些不需要的备份集 
report obsolete ;

259 边备份边压缩数据库 
backup as compressed backupset database;

260 增量备份时的0级备份一个表空间 
backup incremental level 0 tablespace users;

261 2级备份累积备份 
backup incremental level 2 cumulative tablespace users;

262 删除指定日期的归档日志 
DELETE ARCHIVELOG UNTIL TIME 'SYSDATE-1/24';

263 在RMAN恢复指定表空间 
RUN { 
SQL 'ALTER TABLESPACE USERS OFFLINE IMMEDIATE'; 
RESTORE TABLESPACE USERS; 
RECOVER TABLESPACE USERS; 
SQL 'ALTER TABLESPACE USERS ONLINE'; 
}

264 在RMAN的恢复控制文件 
STARTUP NOMOUNT 
RESTORE CONTROLFILE FROM AUTOBACKUP; 
ALTER DATABASE MOUNT; 
RESTORE DATABASE VALIDATE; 
RECOVER DATABASE ; 
ALTER DATABASE OPEN RESETLOGS;

265 查询数据库的字符集 
select * from database_properties where property_name like 'NLS_CHA%'; 
NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK

266 导出数据到一个文件中 
exp userid=system/oracle file=full.dmp full=y 
exp userid=system/oracle file=full1.dmp,full2.dmp,full3.dmp filesize=2g full=y direct=y log=full.log feedback=10000

267 导出指定用户的表 
exp userid=system/oracle file=gary.dmp owner=gary,wei direct=y log=gary 
exp userid=system/oracle file=gary.dmp owner=gary direct=y log=gary.log

268 导出指定表 
exp userid=system/oracle file=gary_a.dmp tables=gary.a direct=y log=gary

269 导出指定表 
exp userid=system/oracle file=gary_a1.dmp tables=gary.a query='where owner=''GARY''' log=gary.LOG

270 查看导出的帮助信息 
exp -help

271 删除gary的用户 
drop user gary cascade;

272 重建用户GARY 
CREATE USER "GARY" PROFILE "DEFAULT" IDENTIFIED BY "GARY" ACCOUNT UNLOCK

273 授权用户GARY 
GRANT UNLIMITED TABLESPACE,CONNECT,RESOURCE TO "GARY";

274 导入用户GARY的数据 
imp userid=system/oracle fromuser=gary touser=gary show=y 
imp userid=system/oracle fromuser=gary touser=gary file=full.dmp log=imp.log 
imp userid=system/oracle fromuser=gary touser=wei file=gary.dmp log=imp.log

275 查询状态 
select object_name,object_type,owner from dba_objects where status='INVALID';

EXEC UTL_RECOMP.RECOMP_PARALLEL

276 建立对象,允许可以用这个目录来导入导出 
create directory mydir as 'e:expdata';

277 授权用户的权限 
grant read,write on directory mydir to gary;

278 导出数据 
expdp userid=gary/gary dumpfile=gary directory=mydir PARALLEL=2 schemas=gary job_name=gary_job 
expdp userid=gary/gary attach=gary_job

268 查询任务 
SELECT * FROM V$DATAPUMP_JOB;

269 导入数据 
impdp userid=system/oracle dumpfile=gary directory=mydir job_name=gary_job