在改章節中,我們主要介紹數據庫連接的內容,自我感覺有個不錯的議建和大家分享下

????播布客海明師老第一媾和第二講記筆

????rman 10g備份與恢復
海明誠實第一講
一、recovery management（恢復管理器）

????rman可以連接據數庫的類型
1、target database
?? sysdba限權才能target database，如果沒有連接失敗。
2、recovery catalog database
?? 可選的，可以用catalog或者nocatalog，應用rman備份時候發生的信息，存到catalog，當然如果沒有catalog就放到controlfile面里
3、auxiliary database（幫助據數庫）
??? 連接出產據數庫時候可以連接幫助據數庫，可以將出產據數庫copy到幫助據數庫

?rman可以連接以上三個據數庫，這三種據數庫可以在一臺oracle server面上；也可以在不同的oracle server面上，oracle議建將catalog
目錄據數庫和出產據數庫不要放到一個oracle server面上。還有幫助據數也放到獨自的oracle server上。這樣可以通過rman把出產據數庫copy
到幫助據數庫面上，這樣更安全。
--------------------------------------------------------------------------------------------------
二、rman備份方法? （歸檔式模）
非catalog方法
全備份
0級增量
1級增量
。
。
找一下rman文件
[root@redhat wolf]# find / -name rman
/oracle/ora10g/product/10.2.0/db_1/bin/rman
/oracle/ora10g/product/10.2.0/db_1/oc4j/j2ee/oc4j_applications/applications/em/em/WEB-INF/perl/db/rman
/oracle/ora10g/product/10.2.0/db_1/oc4j/j2ee/oc4j_applications/applications/em/em/database/rman
/oracle/ora10g/product/10.2.0/db_1/sysman/admin/scripts/db/rman

????[root@redhat wolf]# su - oracle
[oracle@redhat ~]$ echo @PATH
@PATH
[oracle@redhat ~]$ echo $PATH? （這面里出來的bin定一先是oracle的bin，不然rman會為認linux子的rman）
/oracle/ora10g/product/10.2.0/db_1/bin:/usr/sbin:/usr/lib/qt-3.3/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/home/oracle/bin

????[root@redhat wolf]# vi ./.bash_profile
export PATH
export TMP=/tmp
export TMPDIR=$TMP
export ORACLE_BASE=/oracle/ora10g
export ORACLE_HOME=$ORACLE_BASE/product/10.2.0/db_1
export ORACLE_SID=wolf
export ORACLE_TERM=xterm
export PATH=/usr/sbin:$PATH
export PATH=$ORACLE_HOME/bin:$PATH （行執序順，不然有可能行執linux上的rman）
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib64:/usr/lib64:/usr/local/lib64:/usr/x11R6/lib64
export CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
export LD_ASSUME_KERNEL=2.6.18
export NLS_LANG="SIMPLIFIED CHINESE_CHINA.UTF8"
umask 022
if [ $USER = "oracle" ]; then
??? if [ $SHELL = "/bin/ksh" ]; then
?????? ulimit -p 16384
?????? ulimit -n 65536
?? fi
fi
"./.bash_profile" 31L, 787C????
-----------------------------------------------------------------------------------
三、備份（多練）
[oracle@redhat ~]$ rman nocatalog
Recovery Manager: Release 10.2.0.1.0 - Production on 星期六 4月 20 02:42:15 2013
Copyright (c) 1982, 2005, Oracle.? All rights reserved.
RMAN> conn target /
RMAN> connect target /
connected to target database: WOLF (DBID=3778783462)
using target database control file instead of recovery catalog
RMAN>list backupset；
RMAN>backup database；（全備份）
RMAN> backup database;?? （仔細觀測發生了兩個備份集，一個是據數庫文件，一個是控制文件和參數文件，分別在不同的目錄）

????Starting backup at 20-4月 -13
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=/oracle/ora10g/oradata/wolf/system01.dbf
input datafile fno=00003 name=/oracle/ora10g/oradata/wolf/sysaux01.dbf
input datafile fno=00002 name=/oracle/ora10g/oradata/wolf/undotbs01.dbf
input datafile fno=00005 name=/oracle/ora10g/oradata/wolf/rmanwolf.dbf
input datafile fno=00004 name=/oracle/ora10g/oradata/wolf/users01.dbf
channel ORA_DISK_1: starting piece 1 at 20-4月 -13
channel ORA_DISK_1: finished piece 1 at 20-4月 -13
piece handle=/oracle/ora10g/flash_recovery_area/WOLF/backupset/2013_04_20/o1_mf_nnndf_TAG20130420T025250_8q4gt34k_.bkp tag=TAG20130420T025250 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:04:56
Finished backup at 20-4月 -13

????Starting Control File and SPFILE Autobackup at 20-4月 -13
piece handle=/oracle/ora10g/flash_recovery_area/WOLF/autobackup/2013_04_20/o1_mf_s_813207467_8q4h3cvp_.bkp comment=NONE
Finished Control File and SPFILE Autobackup at 20-4月 -13

????[oracle@redhat WOLF]$ ls
archivelog? autobackup? backupset? onlinelog
[oracle@redhat WOLF]$ cd autobackup
[oracle@redhat autobackup]$ ls
2013_04_17? 2013_04_19? 2013_04_20
[oracle@redhat autobackup]$ cd 2013_04_20/
[oracle@redhat 2013_04_20]$ ls
o1_mf_s_813207467_8q4h3cvp_.bkp
[oracle@redhat 2013_04_20]$ cd ..
[oracle@redhat autobackup]$ ls
2013_04_17? 2013_04_19? 2013_04_20
[oracle@redhat autobackup]$ cd ..
[oracle@redhat WOLF]$ ls
archivelog? autobackup? backupset? onlinelog
[oracle@redhat WOLF]$ cd backupset/
[oracle@redhat backupset]$ ls
2013_04_17? 2013_04_19? 2013_04_20
[oracle@redhat backupset]$ cd 2013_04_20/
[oracle@redhat 2013_04_20]$ ls
o1_mf_nnndf_TAG20130420T025250_8q4gt34k_.bkp
[oracle@redhat 2013_04_20]$
這里備份的文件可以copy到硬盤然后刪除，當需要恢復的時候在copy到這個目錄，然今后進行恢復

?

?

????====================================================================================================
oracle 10grman備份與恢復
海明師老第二講

????備份內容格式是由rman內部默認格式決定的。nocatalog方法備份信息寫入control
可以到control目錄進入controlfile查看
[oracle@redhat wolf]$ pwd
/oracle/ora10g/oradata/wolf
[oracle@redhat wolf]$ strings control01.ctl
。。。。
delete
2013-04-19T10:39:43
delete
2013-04-19T10:39:43
list
2013-04-19T10:39:43
delete
2013-04-20T02:42:15
RMAN
2013-04-20T02:42:15
list
2013-04-20T02:42:15
delete
2013-04-20T02:42:15
list
2013-04-19T10:39:43
list
。。。。
當然所顯示的信息就是一些備份的時間內容等。
RMAN> show all;
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/oracle/ora10g/product/10.2.0/db_1/dbs/snapcf_wolf.f'; # default

????RMAN> list backupset;

????
List of Backup Sets
===================

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
18????? Full??? 529.59M??? DISK??????? 00:04:53???? 20-4月 -13????
??????? BP Key: 18?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T025250
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/backupset/2013_04_20/o1_mf_nnndf_TAG20130420T025250_8q4gt34k_.bkp
? List of Datafiles in backup set 18
? File LV Type Ckp SCN??? Ckp Time?? Name
? ---- -- ---- ---------- ---------- ----
? 1?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/system01.dbf
? 2?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/undotbs01.dbf
? 3?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/sysaux01.dbf
? 4?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/users01.dbf
? 5?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/rmanwolf.dbf

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
19????? Full??? 6.80M????? DISK??????? 00:00:01???? 20-4月 -13????
??????? BP Key: 19?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T025747
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/autobackup/2013_04_20/o1_mf_s_813207467_8q4h3cvp_.bkp
? Control File Included: Ckp SCN: 476395?????? Ckp time: 20-4月 -13
? SPFILE Included: Modification time: 20-4月 -13

????
backup set（備份集）
backup piece （備份片）

????0級備份和全備份幾乎一樣，唯一的區別是全備份不能作為一級備份的基礎。
參考：
??? 增量備份0級與全備份都是全備份,但是增量備份0級應用rman備份的話就只備份了used block,而全備份備份了used and unused block
總結一下,二者有兩個地方不同
??? 1、全備份不能被用作1級增量備份的基礎
??? 2、應用rman備份的時候,全備份備份了used and unused block,0級應用rman備份的話就只備份了used block
http://blog.csdn.net/wh62592855/article/details/5082505（網上資料說明0級備份和全備的區別）
?
0級增量：
backup incremental level=0 database；
RMAN> backup incremental level=0 database；
Starting backup at 20-4月 -13
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=155 devtype=DISK
channel ORA_DISK_1: starting incremental level 0 datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=/oracle/ora10g/oradata/wolf/system01.dbf
input datafile fno=00003 name=/oracle/ora10g/oradata/wolf/sysaux01.dbf
input datafile fno=00002 name=/oracle/ora10g/oradata/wolf/undotbs01.dbf
input datafile fno=00005 name=/oracle/ora10g/oradata/wolf/rmanwolf.dbf
input datafile fno=00004 name=/oracle/ora10g/oradata/wolf/users01.dbf
channel ORA_DISK_1: starting piece 1 at 20-4月 -13
channel ORA_DISK_1: finished piece 1 at 20-4月 -13
piece handle=/oracle/ora10g/flash_recovery_area/WOLF/backupset/2013_04_20/o1_mf_nnnd0_TAG20130420T032742_8q4jvgyw_.bkp tag=TAG20130420T032742 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:05:36
Finished backup at 20-4月 -13

每日一道理
漫漫人生路，誰都難免會遭遇各種失意或厄運。在凄風苦雨 慘霧愁云的考驗面前，一個強者，是不會向命運低頭的。風再冷，不會永遠不息；霧再濃，不會經久不散。風息霧散，仍是陽光燦爛。

????Starting Control File and SPFILE Autobackup at 20-4月 -13
piece handle=/oracle/ora10g/flash_recovery_area/WOLF/autobackup/2013_04_20/o1_mf_s_813209598_8q4k5yqq_.bkp comment=NONE
Finished Control File and SPFILE Autobackup at 20-4月 -13

????RMAN> list backup;

????List of Backup Sets
===================
BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
18????? Full??? 529.59M??? DISK??????? 00:04:53???? 20-4月 -13????
??????? BP Key: 18?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T025250
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/backupset/2013_04_20/o1_mf_nnndf_TAG20130420T025250_8q4gt34k_.bkp
? List of Datafiles in backup set 18
? File LV Type Ckp SCN??? Ckp Time?? Name
? ---- -- ---- ---------- ---------- ----
? 1?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/system01.dbf
? 2?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/undotbs01.dbf
? 3?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/sysaux01.dbf
? 4?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/users01.dbf
? 5?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/rmanwolf.dbf

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
19????? Full??? 6.80M????? DISK??????? 00:00:01???? 20-4月 -13????
??????? BP Key: 19?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T025747
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/autobackup/2013_04_20/o1_mf_s_813207467_8q4h3cvp_.bkp
? Control File Included: Ckp SCN: 476395?????? Ckp time: 20-4月 -13
? SPFILE Included: Modification time: 20-4月 -13

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
20????? Incr 0? 529.64M??? DISK??????? 00:05:25???? 20-4月 -13????
??????? BP Key: 20?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T032742
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/backupset/2013_04_20/o1_mf_nnnd0_TAG20130420T032742_8q4jvgyw_.bkp
? List of Datafiles in backup set 20
? File LV Type Ckp SCN??? Ckp Time?? Name
? ---- -- ---- ---------- ---------- ----
? 1??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/system01.dbf
? 2??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/undotbs01.dbf
? 3??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/sysaux01.dbf
? 4??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/users01.dbf
? 5??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/rmanwolf.dbf

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
21????? Full??? 6.80M????? DISK??????? 00:00:00???? 20-4月 -13????
??????? BP Key: 21?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T033318
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/autobackup/2013_04_20/o1_mf_s_813209598_8q4k5yqq_.bkp
? Control File Included: Ckp SCN: 477636?????? Ckp time: 20-4月 -13
? SPFILE Included: Modification time: 20-4月 -13

????RMAN>

????一級增量備份（controlfile和spfile都是全備份，沒有增量仔細觀測）
backup incremental level 1 database?? 速度也是很慢，因為面里要和0級對比一些信息
RMAN> backup incremental level 1 database
2> ;

????Starting backup at 20-4月 -13
using channel ORA_DISK_1
channel ORA_DISK_1: starting incremental level 1 datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=/oracle/ora10g/oradata/wolf/system01.dbf
input datafile fno=00003 name=/oracle/ora10g/oradata/wolf/sysaux01.dbf
input datafile fno=00002 name=/oracle/ora10g/oradata/wolf/undotbs01.dbf
input datafile fno=00005 name=/oracle/ora10g/oradata/wolf/rmanwolf.dbf
input datafile fno=00004 name=/oracle/ora10g/oradata/wolf/users01.dbf
channel ORA_DISK_1: starting piece 1 at 20-4月 -13
channel ORA_DISK_1: finished piece 1 at 20-4月 -13
piece handle=/oracle/ora10g/flash_recovery_area/WOLF/backupset/2013_04_20/o1_mf_nnnd1_TAG20130420T034525_8q4kwod7_.bkp tag=TAG20130420T034525 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:04:56
Finished backup at 20-4月 -13

????Starting Control File and SPFILE Autobackup at 20-4月 -13
piece handle=/oracle/ora10g/flash_recovery_area/WOLF/autobackup/2013_04_20/o1_mf_s_813210622_8q4l5yy1_.bkp comment=NONE
Finished Control File and SPFILE Autobackup at 20-4月 -13

????RMAN> list backupset;

????
List of Backup Sets
===================

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
18????? Full??? 529.59M??? DISK??????? 00:04:53???? 20-4月 -13????
??????? BP Key: 18?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T025250
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/backupset/2013_04_20/o1_mf_nnndf_TAG20130420T025250_8q4gt34k_.bkp
? List of Datafiles in backup set 18
? File LV Type Ckp SCN??? Ckp Time?? Name
? ---- -- ---- ---------- ---------- ----
? 1?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/system01.dbf
? 2?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/undotbs01.dbf
? 3?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/sysaux01.dbf
? 4?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/users01.dbf
? 5?????? Full 476267???? 20-4月 -13 /oracle/ora10g/oradata/wolf/rmanwolf.dbf

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
19????? Full??? 6.80M????? DISK??????? 00:00:01???? 20-4月 -13????
??????? BP Key: 19?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T025747
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/autobackup/2013_04_20/o1_mf_s_813207467_8q4h3cvp_.bkp
? Control File Included: Ckp SCN: 476395?????? Ckp time: 20-4月 -13
? SPFILE Included: Modification time: 20-4月 -13

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
20????? Incr 0? 529.64M??? DISK??????? 00:05:25???? 20-4月 -13????
??????? BP Key: 20?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T032742
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/backupset/2013_04_20/o1_mf_nnnd0_TAG20130420T032742_8q4jvgyw_.bkp
? List of Datafiles in backup set 20
? File LV Type Ckp SCN??? Ckp Time?? Name
? ---- -- ---- ---------- ---------- ----
? 1??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/system01.dbf
? 2??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/undotbs01.dbf
? 3??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/sysaux01.dbf
? 4??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/users01.dbf
? 5??? 0? Incr 477469???? 20-4月 -13 /oracle/ora10g/oradata/wolf/rmanwolf.dbf

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
21????? Full??? 6.80M????? DISK??????? 00:00:00???? 20-4月 -13????
??????? BP Key: 21?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T033318
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/autobackup/2013_04_20/o1_mf_s_813209598_8q4k5yqq_.bkp
? Control File Included: Ckp SCN: 477636?????? Ckp time: 20-4月 -13
? SPFILE Included: Modification time: 20-4月 -13

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
22????? Incr 1? 640.00K??? DISK??????? 00:04:44???? 20-4月 -13????
??????? BP Key: 22?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T034525
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/backupset/2013_04_20/o1_mf_nnnd1_TAG20130420T034525_8q4kwod7_.bkp
? List of Datafiles in backup set 22
? File LV Type Ckp SCN??? Ckp Time?? Name
? ---- -- ---- ---------- ---------- ----
? 1??? 1? Incr 478003???? 20-4月 -13 /oracle/ora10g/oradata/wolf/system01.dbf
? 2??? 1? Incr 478003???? 20-4月 -13 /oracle/ora10g/oradata/wolf/undotbs01.dbf
? 3??? 1? Incr 478003???? 20-4月 -13 /oracle/ora10g/oradata/wolf/sysaux01.dbf
? 4??? 1? Incr 478003???? 20-4月 -13 /oracle/ora10g/oradata/wolf/users01.dbf
? 5??? 1? Incr 478003???? 20-4月 -13 /oracle/ora10g/oradata/wolf/rmanwolf.dbf

????BS Key? Type LV Size?????? Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
23????? Full??? 6.80M????? DISK??????? 00:00:01???? 20-4月 -13????
??????? BP Key: 23?? Status: AVAILABLE? Compressed: NO? Tag: TAG20130420T035022
??????? Piece Name: /oracle/ora10g/flash_recovery_area/WOLF/autobackup/2013_04_20/o1_mf_s_813210622_8q4l5yy1_.bkp
? Control File Included: Ckp SCN: 478120?????? Ckp time: 20-4月 -13
? SPFILE Included: Modification time: 20-4月 -13

????RMAN>

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文章結束給大家分享下程序員的一些笑話語錄： 雅虎最擅長的不是開通新業務，是關閉舊業務。

總結

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