oracle啟動(dòng)命令

啟動(dòng)的階段和啟動(dòng)的命令如下:

在元寶等地區(qū)，都構(gòu)建了全面的區(qū)域性戰(zhàn)略布局，加強(qiáng)發(fā)展的系統(tǒng)性、市場(chǎng)前瞻性、產(chǎn)品創(chuàng)新能力，以專注、極致的服務(wù)理念，為客戶提供網(wǎng)站設(shè)計(jì)、成都網(wǎng)站制作 網(wǎng)站設(shè)計(jì)制作按需設(shè)計(jì),公司網(wǎng)站建設(shè),企業(yè)網(wǎng)站建設(shè),品牌網(wǎng)站建設(shè),營(yíng)銷型網(wǎng)站,外貿(mào)網(wǎng)站制作,元寶網(wǎng)站建設(shè)費(fèi)用合理。

1、nomount:alter database open,此階段需要參數(shù)文件支持;

2、mount:alter database mount,此階段需要控制文件支持;

3、open :alter database open,此階段數(shù)據(jù)庫(kù)會(huì)驗(yàn)證所有的數(shù)據(jù)文件和redo。

4、也可以一條命令直接起庫(kù):startup

具體方法/步驟：

打開命令行窗口界面，可以同時(shí)按住“ctrl+R”鍵，在彈出來(lái)的運(yùn)行窗口中輸入cmd。

啟動(dòng)oracle服務(wù)，在命令行窗口中輸入“net start oracleserviceXXXX”后面的XXXX實(shí)際是需要根據(jù)您自己的數(shù)據(jù)庫(kù)實(shí)例名進(jìn)行替換。如果您不知道，可以看下“計(jì)算機(jī)管理”界面下的服務(wù)中，能不能找到服務(wù)名類似的服務(wù)。提示“服務(wù)已經(jīng)啟動(dòng)成功”就說(shuō)明服務(wù)啟動(dòng)起來(lái)了。

啟動(dòng)監(jiān)聽(tīng)程序，在命令行窗口輸入lsnrctl start，等到提示“命令執(zhí)行成功”就可以了。

接下來(lái)就開始加載數(shù)據(jù)庫(kù)實(shí)例了。在命令行窗口輸入“sqlplus / as sysdba”登錄到一個(gè)空閑的例程。

登錄完成后，輸入“startup”。這個(gè)過(guò)程可能有點(diǎn)慢，直到出現(xiàn)“數(shù)據(jù)庫(kù)已經(jīng)打開”則表示實(shí)例啟動(dòng)成功了。

測(cè)試一下把，隨便連接一個(gè)數(shù)據(jù)庫(kù)用戶，如果提示“連接成功”則說(shuō)明數(shù)據(jù)庫(kù)服務(wù)現(xiàn)在可以正常使用了。

干貨-Oracle里的常用命令

本文轉(zhuǎn)自：51Testing軟件測(cè)試網(wǎng)。（）

? 第一章：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;

　 　第二章：表空間管理

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';

　 　第三章：表

1.create a table

sql create table table_name (column datatype,column datatype]....)

sql tablespace tablespace_name [pctfree integer] [pctused integer]

sql [initrans integer] [maxtrans integer]

sql storage(initial 200k next 200k pctincrease 0 maxextents 50)

sql [logging|nologging] [cache|nocache]

2.copy an existing table

sql create table table_name [logging|nologging] as subquery

3.create temporary table

sql create global temporary table xay_temp as select * from xay;

on commit preserve rows/on commit delete rows

4.pctfree = (average row size - initial row size) *100 /average row size

pctused = 100-pctfree- (average row size*100/available data space)

5.change storage and block utilization parameter

sql alter table table_name pctfree=30 pctused=50 storage(next 500k

sql minextents 2 maxextents 100);

6.manually allocating extents

sql alter table table_name allocate extent(size 500k datafile 'c:/oracle/data.dbf');

7.move tablespace

sql alter table employee move tablespace users;

8.deallocate of unused space

sql alter table table_name deallocate unused [keep integer]

9.truncate a table

sql truncate table table_name;

10.drop a table

sql drop table table_name [cascade constraints];

11.drop a column

sql alter table table_name drop column comments cascade constraints checkpoint 1000;

alter table table_name drop columns continue;

12.mark a column as unused

sql alter table table_name set unused column comments cascade constraints;

alter table table_name drop unused columns checkpoint 1000;

alter table orders drop columns continue checkpoint 1000

data_dictionary : dba_unused_col_tabs

第四章：索引

1.creating function-based indexes

sql create index summit.item_quantity on summit.item(quantity-quantity_shipped);

2.create a B-tree index

sql create [unique] index index_name on table_name(column,.. asc/desc) tablespace

sql tablespace_name [pctfree integer] [initrans integer] [maxtrans integer]

sql [logging | nologging] [nosort] storage(initial 200k next 200k pctincrease 0

sql maxextents 50);

3.pctfree(index)=(maximum number of rows-initial number of rows)*

100/maximum number of rows

4.creating reverse key indexes

sql create unique index xay_id on xay(a) reverse pctfree 30 storage(initial 200k

sql next 200k pctincrease 0 maxextents 50) tablespace indx;

5.create bitmap index

sql create bitmap index xay_id on xay(a) pctfree 30 storage( initial 200k next 200k

sql pctincrease 0 maxextents 50) tablespace indx;

6.change storage parameter of index

sql alter index xay_id storage (next 400k maxextents 100);

7.allocating index space

sql alter index xay_id allocate extent(size 200k datafile 'c:/oracle/index.dbf');

8.alter index xay_id deallocate unused;

　 　第五章：約束

1.define constraints as immediate or deferred

sql alter session set constraint[s] = immediate/deferred/default;

set constraint[s] constraint_name/all immediate/deferred;

2. sql drop table table_name cascade constraints

sql drop tablespace tablespace_name including contents cascade constraints

3. define constraints while create a table

sql create table xay(id number(7) constraint xay_id primary key deferrable

sql using index storage(initial 100k next 100k) tablespace indx);

primary key/unique/references table(column)/check

4.enable constraints

sql alter table xay enable novalidate constraint xay_id;

5.enable constraints

sql alter table xay enable validate constraint xay_id;

第六章：LOAD數(shù)據(jù)

1.loading data using direct_load insert

sql insert /*+append */ into emp nologging

sql select * from emp_old;

2.parallel direct-load insert

sql alter session enable parallel dml;

sql insert /*+parallel(emp,2) */ into emp nologging

sql select * from emp_old;

3.using sql*loader

sql sqlldr scott/tiger \

sql control = ulcase6.ctl \

sql log = ulcase6.log direct=true

第七章：reorganizing data

1.using expoty

$exp scott/tiger tables(dept,emp) file=c:\emp.dmp log=exp.log compress=n direct=y

2.using import

$imp scott/tiger tables(dept,emp) file=emp.dmp log=imp.log ignore=y

3.transporting a tablespace

sqlalter tablespace sales_ts read only;

$exp sys/.. file=xay.dmp transport_tablespace=y tablespace=sales_ts

triggers=n constraints=n

$copy datafile

$imp sys/.. file=xay.dmp transport_tablespace=y datafiles=(/disk1/sles01.dbf,/disk2

/sles02.dbf)

sql alter tablespace sales_ts read write;

4.checking transport set

sql DBMS_tts.transport_set_check(ts_list ='sales_ts' ..,incl_constraints=true);

在表transport_set_violations 中查看

sql dbms_tts.isselfcontained 為true 是， 表示自包含

第八章：managing password security and resources

1.controlling account lock and password

sql alter user juncky identified by oracle account unlock;

2.user_provided password function

sql function_name(userid in varchar2(30),password in varchar2(30),

old_password in varchar2(30)) return boolean

3.create a profile : password setting

sql create profile grace_5 limit failed_login_attempts 3

sql password_lock_time unlimited password_life_time 30

sqlpassword_reuse_time 30 password_verify_function verify_function

sql password_grace_time 5;

4.altering a profile

sql alter profile default failed_login_attempts 3

sql password_life_time 60 password_grace_time 10;

5.drop a profile

sql drop profile grace_5 [cascade];

6.create a profile : resource limit

sql create profile developer_prof limit sessions_per_user 2

sql cpu_per_session 10000 idle_time 60 connect_time 480;

7. view = resource_cost : alter resource cost

dba_Users,dba_profiles

8. enable resource limits

sql alter system set resource_limit=true;

第九章：Managing users

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

第十章：managing privileges

1.system privileges: view = system_privilege_map ,dba_sys_privs,session_privs

2.grant system privilege

sql grant create session,create table to managers;

sql grant create session to scott with admin option;

with admin option can grant or revoke privilege from any user or role;

3.sysdba and sysoper privileges:

sysoper: startup,shutdown,alter database open|mount,alter database backup controlfile,

alter tablespace begin/end backup,recover database

alter database archivelog,restricted session

sysdba: sysoper privileges with admin option,create database,recover database until

4.password file members: view:= v$pwfile_users

5.O7_dictionary_accessibility =true restriction access to view or tables in other schema

6.revoke system privilege

sql revoke create table from karen;

sql revoke create session from scott;

7.grant object privilege

sql grant execute on dbms_pipe to public;

sql grant update(first_name,salary) on employee to karen with grant option;

8.display object privilege : view = dba_tab_privs, dba_col_privs

9.revoke object privilege

sql revoke execute on dbms_pipe from scott [cascade constraints];

10.audit record view := sys.aud$

11. protecting the audit trail

sql audit delete on sys.aud$ by access;

12.statement auditing

sql audit user;

13.privilege auditing

sql audit select any table by summit by access;

14.schema object auditing

sql audit lock on summit.employee by access whenever successful;

15.view audit option : view= all_def_audit_opts,dba_stmt_audit_opts,

dba_priv_audit_opts,dba_obj_audit_opts

16.view audit result: view= dba_audit_trail,dba_audit_exists,dba_audit_object,

dba_audit_session,dba_audit_statement

第十一章： manager role

1.create roles

sql create role sales_clerk;

sql create role hr_clerk identified by bonus;

sql create role hr_manager identified externally;

2.modify role

sql alter role sales_clerk identified by commission;

sql alter role hr_clerk identified externally;

sql alter role hr_manager not identified;

3.assigning roles

sql grant sales_clerk to scott;

sql grant hr_clerk to hr_manager;

sql grant hr_manager to scott with admin option;

4.establish default role

sql alter user scott default role hr_clerk,sales_clerk;

sql alter user scott default role all;

sql alter user scott default role all except hr_clerk;

sql alter user scott default role none;

5.enable and disable roles

sql set role hr_clerk;

sql set role sales_clerk identified by commission;

sql set role all except sales_clerk;

sql set role none;

6.remove role from user

sql revoke sales_clerk from scott;

sql revoke hr_manager from public;

7.remove role

sql drop role hr_manager;

8.display role information

view: =dba_roles,dba_role_privs,role_role_privs,dba_sys_privs,

role_sys_privs,role_tab_privs,session_roles

第十二章: BACKUP and RECOVERY

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';

啟動(dòng)oracle數(shù)據(jù)庫(kù)命令

（1）startup（用sys用戶或者其他擁有啟動(dòng)數(shù)據(jù)庫(kù)權(quán)限的用戶登錄數(shù)據(jù)庫(kù)軟件，然后執(zhí)行該命令即可，如果存在多個(gè)實(shí)例，請(qǐng)?jiān)趩?dòng)前確認(rèn)SID），數(shù)據(jù)庫(kù)有三個(gè)狀態(tài)nomount，mount，和open，默認(rèn)開啟到open，如果開啟到另外兩個(gè)狀態(tài)，那么可以通過(guò)alter命令改變狀態(tài)。

（2）如果是rac中啟停數(shù)據(jù)庫(kù)節(jié)點(diǎn)，那么有專門的命令srvcrl（這個(gè)僅僅是命令的操作符，后面有參數(shù)的，參數(shù)我就不寫了，具體可以查一下，網(wǎng)上很多與偶內(nèi)容的），另外還有crscrl（啟停crs服務(wù)的命令，同樣也是操作符，后面有參數(shù)的，這里也不寫了，自己查一下就可以了）

（3）啟動(dòng)數(shù)據(jù)庫(kù)還有一個(gè)命令就是啟動(dòng)監(jiān)聽(tīng)，lsnrctl命令（后面同樣有參數(shù)，能啟動(dòng)停止，也能查詢監(jiān)聽(tīng)狀態(tài)，這個(gè)監(jiān)聽(tīng)的基本命令）

oracle中exp命令怎樣使用

exp三種用法：

1、exp 導(dǎo)出某個(gè)用戶全部數(shù)據(jù)庫(kù)

格式：exp ywxy/ywxy@ORCL file=d:/daochu1.dmp full=y;

ywxy/ywxy@ORCL? 是用戶名/密碼@數(shù)據(jù)庫(kù)名

file=d:/daochu1.dmp? 是導(dǎo)出的路徑

full=y 是導(dǎo)出全庫(kù)

2、exp 導(dǎo)出某個(gè)用戶的某個(gè)庫(kù)

格式：exp ywxy/ywxy@ORCL file=d:/daochu1.dmp owner=system;

ywxy/ywxy@ORCL? 是用戶名/密碼@數(shù)據(jù)庫(kù)名

file=d:/daochu1.dmp? 是導(dǎo)出的路徑

owner=system 是要導(dǎo)出的庫(kù)

3、exp 導(dǎo)出某個(gè)用戶的某個(gè)表

格式：exp ywxy/ywxy@ORCL file=d:/daochu1.dmp tables=C_ZX_QYJC;

ywxy/ywxy@ORCL? 是用戶名/密碼@數(shù)據(jù)庫(kù)名

file=d:/daochu1.dmp? 是導(dǎo)出的路徑

tables=C_ZX_QYJC? 是導(dǎo)出的表名字，多個(gè)表名則 (table1,table2)形式

擴(kuò)展資料：

常用選項(xiàng)：

1、FULL，用于導(dǎo)出整個(gè)數(shù)據(jù)庫(kù)，在ROWS=N一起使用時(shí)，可以導(dǎo)出整個(gè)數(shù)據(jù)庫(kù)的結(jié)構(gòu)。

2、OWNER和TABLE，這兩個(gè)選項(xiàng)用于定義EXP的對(duì)象。OWNER定義導(dǎo)出指定用戶的對(duì)象，TABLE指定EXP的table名稱。

⒊BUFFER和FEEDBACK，在導(dǎo)出比較多的數(shù)據(jù)時(shí)，考慮設(shè)置這兩個(gè)參數(shù)。

⒋FILE和LOG，這兩個(gè)參數(shù)分別指定備份的DMP名稱和LOG名稱，包括文件名和目錄。

⒌COMPRESS參數(shù)不壓縮導(dǎo)出數(shù)據(jù)的內(nèi)容。用來(lái)控制導(dǎo)出對(duì)象的storage語(yǔ)句如何產(chǎn)生。默認(rèn)值為Y，使用默認(rèn)值，對(duì)象的存儲(chǔ)語(yǔ)句的init extent等于當(dāng)前導(dǎo)出對(duì)象的extent的總和。推薦使用COMPRESS=N。

⒍ FILESIZE該選項(xiàng)在8i中可用。如果導(dǎo)出的dmp文件過(guò)大時(shí)，最好使用FILESIZE參數(shù)，限制文件大小不要超過(guò)2G。

oracle數(shù)據(jù)庫(kù)入門教程

oracle是塊結(jié)構(gòu)語(yǔ)言，oracle程序劃分成幾個(gè)部分，并在每個(gè)部分中寫入邏輯代碼塊，每個(gè)塊由三個(gè)子部分組成。

聲明部分：此部分是以關(guān)鍵字DECLARE開頭。這是一個(gè)可選部分，并定義了程序中要使用的所有變量，游標(biāo)，子程序和其他元素。

可執(zhí)行命令部分：此部分包含在關(guān)鍵字BEGIN和END之間，這是一個(gè)強(qiáng)制性部分。由程序的可執(zhí)行oracle語(yǔ)句組成。應(yīng)該有至少一個(gè)可執(zhí)行代碼行，可以只是一個(gè)NULL命令，表示不執(zhí)行任何操作。

異常處理部分 ：此部分以關(guān)鍵字EXCEPTION開頭。這是一個(gè)可選部分，包含處理程序中錯(cuò)誤的異常。

每個(gè)oracle語(yǔ)句以分號(hào)(;)結(jié)尾。使用BEGIN和END可以將oracle塊嵌套在其他oracle塊中。以下是Poracle塊的基本結(jié)構(gòu)。

Hello World示例：

END；行表示oracle塊的結(jié)尾。要從oracle命令行運(yùn)行代碼，需要在代碼的最后一行之后鍵入/字符。當(dāng)上述代碼在oracle提示符下執(zhí)行時(shí)，它會(huì)產(chǎn)生以下結(jié)果：

oracle標(biāo)識(shí)符：oracle標(biāo)識(shí)符是常量，變量，異常，過(guò)程，游標(biāo)和保留字。標(biāo)識(shí)符包括一個(gè)字母，可選地后跟多個(gè)字母，數(shù)字，美元符號(hào)，下劃線和數(shù)字符號(hào)，不得超過(guò)30個(gè)字符。

默認(rèn)情況下，標(biāo)識(shí)符不區(qū)分大小寫。例如，可以使用integer或INTEGER來(lái)表示一個(gè)數(shù)值。 不能使用保留關(guān)鍵字作為標(biāo)識(shí)符。

擴(kuò)展資料

oracle注釋程序：注釋可以在編寫的oracle代碼中包含的說(shuō)明性文字，并幫助其他人閱讀源代碼。所有編程語(yǔ)言都允許某種形式的注釋。

oracle支持單行和多行注釋。注釋中的所有字符都被oracle編譯器忽略。oracle單行注釋以分隔符開頭 --(雙連字符)，多行注釋由/*和*/括起來(lái)。

當(dāng)上述代碼在oracle提示符下執(zhí)行時(shí)，會(huì)產(chǎn)生以下結(jié)果：

oracle變量的名稱由可選的字母，數(shù)字，美元($)符號(hào)，下劃線和數(shù)字符號(hào)組成，不能超過(guò)30個(gè)字符。 默認(rèn)情況下，變量名不區(qū)分大小寫。不能將保留的oracle關(guān)鍵字用作變量名稱。

oracle編程語(yǔ)言允許定義各種類型的變量，如：日期時(shí)間數(shù)據(jù)類型，記錄，集合等，我們將在后面的章節(jié)中介紹。 在本章中僅學(xué)習(xí)基本的變量類型。

linux下怎么啟動(dòng)oracle數(shù)據(jù)庫(kù)，命令是什么？

啟動(dòng)oracle數(shù)據(jù)庫(kù)步驟：\x0d\x0a首先使用oracle用戶登錄Linux，然后在shell命令行中執(zhí)行下面的命令：\x0d\x0a第一步：打開Oracle監(jiān)聽(tīng)\x0d\x0a$ lsnrctl start\x0d\x0a第二步：進(jìn)入sqlplus\x0d\x0a$ sqlplus /nolog\x0d\x0aSQL\x0d\x0a第三步：使用sysdab角色登錄sqlplus\x0d\x0aSQL conn /as sysdba\x0d\x0a第四步：?jiǎn)?dòng)數(shù)據(jù)庫(kù)\x0d\x0aSQL startup\x0d\x0a經(jīng)過(guò)上面的四個(gè)步驟，oracle數(shù)據(jù)庫(kù)就可以啟動(dòng)了。\x0d\x0a關(guān)閉數(shù)據(jù)庫(kù)用 shutdown 是要等待事物結(jié)束才關(guān)閉，強(qiáng)制關(guān)閉用 shutdown abort。