各位技術愛好者，看完本文後，你可以掌握如下的技能，也可以學到一些其它你所不知道的知識，~O(∩_∩)O~：
① EXPDP和IMPDP基于scn的導出
② ora-06502的解決方法
Tips：
① 若文章代碼格式有錯亂，推薦使用QQ或360浏覽器，也可以下載下傳pdf格式的文檔來檢視，pdf文檔下載下傳位址：http://yunpan.cn/cdEQedhCs2kFz （提取碼：ed9b）
② 本篇BLOG中代碼部分需要特别關注的地方我都用黃色背景和紅色字型來表示，比如下邊的例子中，thread 1的最大歸檔日志号為33，thread 2的最大歸檔日志号為43是需要特别關注的地方，指令一般使用粉紅顔色标注，注釋一般采用藍色字型表示。
List of Archived Logs in backup set 11
Thrd Seq Low SCN Low Time Next SCN Next Time
---- ------- ---------- ------------------- ---------- ---------
1 32 1621589 2015-05-29 11:09:52 1625242 2015-05-29 11:15:48
1 33 1625242 2015-05-29 11:15:48 1625293 2015-05-29 11:15:58
2 42 1613951 2015-05-29 10:41:18 1625245 2015-05-29 11:15:49
2 43 1625245 2015-05-29 11:15:49 1625253 2015-05-29 11:15:53
[ZFXDESKDB1:root]:/>lsvg -o
T_XDESK_APP1_vg
rootvg
[ZFXDESKDB1:root]:/>
[ZFXDESKDB1:root]:/>lsvg rootvg
====》2097152*512/1024/1024/1024=1G
本文如有錯誤或不完善的地方請大家多多指正，ITPUB留言或QQ皆可，您的批評指正是我寫作的最大動力。
http://blog.itpub.net/29324876/viewspace-1248197/
http://blog.itpub.net/26736162/viewspace-1982160/
執行導出操作的時候報錯資訊如下：
ORA-31626: job does not exist
ORA-31638: cannot attach to job SYS_EXPORT_SCHEMA_01 for user XXXXX
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPV$FT_INT", line 389
ORA-39077: unable to subscribe agent KUPCA_2_20210102154238 to queue "KUPCA_2_20210102154238 to queue "KUPCC_2_20210102154237"
ORA-06512: at "SYS.KUPC$QUE_INT", line 249
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
網上查詢後有網友已經遇到了，連接配接位址：http://blog.itpub.net/26736162/viewspace-1982160/ ，我直接根據這個來解決吧。
項目
source db
db 類型
rac
db version
10.2.0.5
db 存儲
FS type
ORACLE_SID
xxx
db_name
主機IP位址：
XXX.XXX.XXX.XXX
OS版本及kernel版本
AIX 6
OS hostname
ZTGXPADDB1
oracle@ZTGXPADDB1:/gg/ogg/dirrpt$ expdp XXXXX/[email protected]:1521/oraXPAD DIRECTORY=DATA_PUMP_DIR DUMPFILE=XXXXX_20160125.dmp LOGFILE=XXXXX_20160125.log FLASHBACK_SCN=12242466617347
Export: Release 10.2.0.5.0 - 64bit Production on Saturday, 02 January, 2021 15:42:47
Copyright (c) 2003, 2007, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, Real Application Clusters, Data Mining and Real Application Testing options
oracle@ZTGXPADDB1:/gg/ogg/dirrpt$ expdp XXXXX/[email protected]:1521/oraXPAD DIRECTORY=DATA_PUMP_DIR DUMPFILE=XXXXX_20160125.dmp LOGFILE=XXXXX_20160125.log FLASHBACK_SCN=12242466617347
根據資料解決過程如下：
SELECT *
FROM dba_objects d
WHERE d.OBJECT_NAME like '%DATAPUMP%'
AND D.OBJECT_TYPE = 'SEQUENCE';
FROM DBA_SEQUENCES D
WHERE D.sequence_name IN
('AQKUPCKUPCDATAPUMP_QUETAB_N', 'AQKUPCKUPCDATAPUMP_QUETAB_1_N');
oracle@ZTGXPADDB1:/gg/ogg/dirrpt$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.5.0 - Production on Sat Jan 2 16:08:47 2021
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
SQL> SELECT AQKUPCKUPCDATAPUMP_QUETAB_N.CURRVAL FROM DUAL;
SELECT AQKUPCKUPCDATAPUMP_QUETAB_N.CURRVAL FROM DUAL
*
ERROR at line 1:
ORA-08002: sequence AQKUPCKUPCDATAPUMP_QUETAB_N.CURRVAL is not yet defined in
this session
SQL> SELECT AQKUPCKUPCDATAPUMP_QUETAB_N.NEXTVAL FROM DUAL;
NEXTVAL
----------
1194988
SQL> DROP SEQUENCE AQKUPCKUPCDATAPUMP_QUETAB_1_N;
DROP SEQUENCE AQKUPCKUPCDATAPUMP_QUETAB_1_N
*
ORA-02289: sequence does not exist
SQL> DROP SEQUENCE AQKUPCKUPCDATAPUMP_QUETAB_N;
Sequence dropped.
SQL> CREATE SEQUENCE AQKUPCKUPCDATAPUMP_QUETAB_N MINVALUE 1 MAXVALUE 999999 START WITH 1 INCREMENT BY 1 CACHE 20 CYCLE;
Sequence created.
1
SQL> EXIT
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
oracle@ZTGXPADDB1:/gg/ogg/dirrpt$
oracle@ZTGXPADDB1:/gg/ogg/dirrpt$ expdp XXXXX/XXXXX DIRECTORY=DATA_PUMP_DIR DUMPFILE=XXXXX_20160125.dmp LOGFILE=XXXXX_20160125.log FLASHBACK_SCN=12242466617347
Export: Release 10.2.0.5.0 - 64bit Production on Saturday, 02 January, 2021 16:11:46
ORA-39002: invalid operation
ORA-39070: Unable to open the log file.
ORA-39087: directory name DATA_PUMP_DIR is invalid
oracle@ZTGXPADDB1:/gg/ogg/dirrpt$ cd /oracle/app/oracle/product/10.2.0/db/rdbms/log/
oracle@ZTGXPADDB1:/oracle/app/oracle/product/10.2.0/db/rdbms$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.5.0 - Production on Sat Jan 2 16:17:56 2021
SQL> grant read,write on directory DATA_PUMP_DIR to XXXXX;
Grant succeeded.
SQL> exit
oracle@ZTGXPADDB1:/oracle/app/oracle/product/10.2.0/db/rdbms$ expdp XXXXX/XXXXX DIRECTORY=DATA_PUMP_DIR DUMPFILE=XXXXX_20160125.dmp LOGFILE=XXXXX_20160125.log FLASHBACK_SCN=12242466617347
Export: Release 10.2.0.5.0 - 64bit Production on Saturday, 02 January, 2021 16:18:06
FLASHBACK automatically enabled to preserve database integrity.
Starting "XXXXX"."SYS_EXPORT_SCHEMA_01": XXXXX/******** DIRECTORY=DATA_PUMP_DIR DUMPFILE=XXXXX_20160125.dmp LOGFILE=XXXXX_20160125.log FLASHBACK_SCN=12242466617347
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 11.15 GB
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/SYNONYM/SYNONYM
Processing object type SCHEMA_EXPORT/DB_LINK
Processing object type SCHEMA_EXPORT/SEQUENCE/SEQUENCE
Processing object type SCHEMA_EXPORT/TABLE/TABLE
Processing object type SCHEMA_EXPORT/TABLE/GRANT/OWNER_GRANT/OBJECT_GRANT
Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type SCHEMA_EXPORT/TABLE/COMMENT
Processing object type SCHEMA_EXPORT/PACKAGE/PACKAGE_SPEC
Processing object type SCHEMA_EXPORT/FUNCTION/FUNCTION
Processing object type SCHEMA_EXPORT/PROCEDURE/PROCEDURE
Processing object type SCHEMA_EXPORT/PACKAGE/COMPILE_PACKAGE/PACKAGE_SPEC/ALTER_PACKAGE_SPEC
Processing object type SCHEMA_EXPORT/FUNCTION/ALTER_FUNCTION
Processing object type SCHEMA_EXPORT/PROCEDURE/ALTER_PROCEDURE
Processing object type SCHEMA_EXPORT/VIEW/VIEW
Processing object type SCHEMA_EXPORT/VIEW/GRANT/OWNER_GRANT/OBJECT_GRANT
Processing object type SCHEMA_EXPORT/PACKAGE/PACKAGE_BODY
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/TRIGGER
Processing object type SCHEMA_EXPORT/TABLE/INDEX/FUNCTIONAL_AND_BITMAP/INDEX
Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/FUNCTIONAL_AND_BITMAP/INDEX_STATISTICS
Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
. . exported "XXXXX"."RICH_CUSTPRODUCTBAL" 63.64 KB 582 rows
. . exported "XXXXX"."FINANCIAL_SALEBANK" 2.311 GB 28137697 rows
. . exported "XXXXX"."XPADC_LCCPZTB" 2.866 MB 32160 rows
. . exported "XXXXX"."RICH_CUSTOMERINFO" 616.9 KB 2596 rows
. . exported "XXXXX"."RICH_CUSTACCOUNT" 11.33 MB 177757 rows
. . exported "XXXXX"."FINANCIAL_MESSAGEINFO" 329.7 MB 3067896 rows
. . exported "XXXXX"."RICH_AUTOTRADE" 36.53 KB 161 rows
. . exported "XXXXX"."BASE_SYSLOG" 24.70 KB 131 rows
. . exported "XXXXX"."CORP_FINANCIAL_MESSAGEINFO" 7.820 KB 3 rows
. . exported "XXXXX"."FINANCIAL_POSITIONHIS" 20.93 MB 413414 rows
. . exported "XXXXX"."BASE_TRANCOURSE" 23.38 KB 157 rows
《《《《篇幅原因，有省略。。。。。。。。。。。。。。。）》》》
UDE-00008: operation generated ORACLE error 31626
ORA-39086: cannot retrieve job information
ORA-06512: at "SYS.DBMS_DATAPUMP", line 2772
ORA-06512: at "SYS.DBMS_DATAPUMP", line 3886
ORA-06512: at line 1
oracle@ZTGXPADDB1:/oracle/app/oracle/product/10.2.0/db/rdbms$ df -g
Filesystem GB blocks Free %Used Iused %Iused Mounted on
/dev/hd4 2.00 1.82 9% 6857 2% /
/dev/hd2 10.00 6.01 40% 69921 5% /usr
/dev/hd9var 2.00 1.19 41% 3613 2% /var
/dev/hd3 2.00 1.75 13% 2572 1% /tmp
/dev/hd1 6.00 6.00 1% 9 1% /home
/proc - - - - - /proc
/dev/hd10opt 2.00 1.69 16% 7156 2% /opt
/dev/Tlv_oracle 30.00 4.66 85% 645205 37% /oracle
/dev/Tlv_softtmp 80.00 79.56 1% 12 1% /softtmp
/dev/itm_lv 3.00 1.91 37% 5101 2% /opt/IBM/ITM
/dev/Tlv_xpad 95.00 35.89 63% 1118 1% /xpad
ZTINIMSERVER:/sharebin 100.00 2.12 98% 1219019 69% /sharebin
22.188.129.240:/sharebin 100.00 2.12 98% 1219019 69% /sharebin
22.188.129.240:/sharebkup 5500.00 1890.76 66% 2455955 1% /sharebkup
/dev/fslv00 300.00 284.07 6% 21 1% /ggbak
/dev/Tlv_gg 218.50 43.95 80% 4772 3% /gg
oracle@ZTGXPADDB1:/softtmp$ expdp XXXXX/XXXXX DIRECTORY=DMP DUMPFILE=XXXXX_20160125.dmp LOGFILE=XXXXX_20160125.log FLASHBACK_SCN=12242466617347
oracle@ZTGXPADDB1:/softtmp$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.5.0 - Production on Sat Jan 2 16:38:32 2021
SQL> Select current_scn from v$database;
CURRENT_SCN
-----------
1.2242E+13
SQL> col current_scn format 999999999999999
SQL> Select current_scn from v$database;
CURRENT_SCN
----------------
12242466771468
oracle@ZTGXPADDB1:/softtmp$ expdp XXXXX/XXXXX DIRECTORY=DMP DUMPFILE=XXXXX_20160125.dmp LOGFILE=XXXXX_20160125.log FLASHBACK_SCN=12242466771468
Export: Release 10.2.0.5.0 - 64bit Production on Saturday, 02 January, 2021 16:39:06
Starting "XXXXX"."SYS_EXPORT_SCHEMA_01": XXXXX/******** DIRECTORY=DMP DUMPFILE=XXXXX_20160125.dmp LOGFILE=XXXXX_20160125.log FLASHBACK_SCN=12242466771468
Export> status
Job: SYS_EXPORT_SCHEMA_01
Operation: EXPORT
Mode: SCHEMA
State: EXECUTING
Bytes Processed: 0
Current Parallelism: 1
Job Error Count: 0
Dump File: /softtmp/dmp/XXXXX_20160125.dmp
bytes written: 4,096
Worker 1 Status:
Object Schema: XXXXX
Object Name: XPAD_SH
Object Type: SCHEMA_EXPORT/PACKAGE/PACKAGE_SPEC
Completed Objects: 1
Total Objects: 1
Worker Parallelism: 1
Export> kill_job
Are you sure you wish to stop this job ([yes]/no): yes
oracle@ZTGXPADDB1:/softtmp$
oracle@ZTGXPADDB1:/softtmp$ expdp XXXXX/XXXXX directory=DMP dumpfile=XXXXX_20160125_01.dmp LOGFILE=XXXXX_20160125.log TABLES=BASE_ACTIONPOWER,BASE_BANK,BASE_BANKMERGE,BASE_BANKTREE,BASE_BRCHBANKCTRL,BASE_CERTIFICATE,BASE_CESS,BASE_COREBANK,BASE_CURRENCY,BASE_DEPARTMENT,BASE_HOLIDAYCALENDAR,BASE_HOLIDAYDATE,BASE_INTEREST,BASE_INTERESTHIS,BASE_MAINAREA,BASE_MENU,BASE_PRODTYPECODE,BASE_RATE,BASE_ROLE,BASE_SYSLOG,BASE_SYSPARAM,BASE_TERMINALTELLER,BASE_USER,FINANCIAL_BANKPROFITLOG,FINANCIAL_DIVIDENDPLAN,FINANCIAL_FUNDPRICE,FINANCIAL_INTERESTRESET,FINANCIAL_ISSUE,FINANCIAL_ISSUEAUDIT,FINANCIAL_ISSUEAUDITHIS,FINANCIAL_ISSUEBRAND,FINANCIAL_ISSUECFL,FINANCIAL_ISSUECONTROL,FINANCIAL_ISSUEDIFFRATE,FINANCIAL_ISSUEDISCOUNT,FINANCIAL_ISSUEEXPD,FINANCIAL_ISSUEEXT,FINANCIAL_ISSUEFEE,FINANCIAL_ISSUEFORCUSTRISKLVL,FINANCIAL_ISSUEFUNDSTRANSFER,FINANCIAL_ISSUEOBSERV,FINANCIAL_ISSUEPAY,FINANCIAL_ISSUEPROFIT,FINANCIAL_ISSUEQTYSPLIT,FINANCIAL_ISSUESELLCTRL,FINANCIAL_ISSUESERIAL,FINANCIAL_ISSUEVARIABLE,FINANCIAL_ISSUEWORKTIME,FINANCIAL_LIQUIDATEACT,FINANCIAL_MESSAGEINFO,FINANCIAL_PERIOD,FINANCIAL_PRICE,FINANCIAL_PRICEHIS,FINANCIAL_REFERINDEX,FINANCIAL_POSITION,RICH_AUTOTRADE,RICH_CUSTACCOUNT,RICH_CUSTAUTOTRADE,RICH_CUSTAUTOTRADEHIS,RICH_CUSTCAPITAL,RICH_CUSTFAVORABLE,RICH_CUSTFREEZEUNIT,RICH_CUSTFUNDPROFIT,RICH_CUSTIMPAWN,RICH_CUSTKEEPBAL,RICH_CUSTOMERINFO,RICH_CUSTOMERINFOHIS,RICH_CUSTORDERTRADE,RICH_CUSTPAYAMOUNTLOG,RICH_CUSTPRODUCTBAL,RICH_CUSTPRODUCTBALQTY,RICH_CUSTPROFITDCCY,RICH_CUSTPROFITLOG,RICH_CUSTPROFITNORMAL,RICH_CUSTPROFITPAYMODE,RICH_CUSTPROFITPAYMODEHIS,RICH_CUSTRISKLVL,RICH_FUNDTRADELOG,RICH_NOPAYAMOUNT,RICH_NORMALPAY,RICH_ORDERTRADE,RICH_SMSCMDSIGN,RICH_SMSCMDTRADE,RICH_STARTBAL,RICH_STARTBALHIS,financial_positionhis,financial_positiontra,financial_positioncst,financial_positionacc,corp_stattemptab,corp_stattemptabacc,corp_stattemptabcst,FINANCIAL_ICCARDCODE,BASE_FINANCIALICCARD,FINANCIAL_ISSUESPECIFICATION,PA_RPT_PARAM,FINANCIAL_SALEBANK_HIS,RICH_TRADELOG_HIS,RICH_CUSTPAYAMOUNTHIS_HIS,RICH_CUSTPRODUCTBALHIS_HIS,RIC
Export: Release 10.2.0.5.0 - 64bit Production on Saturday, 02 January, 2021 16:41:50
Starting "XXXXX"."SYS_EXPORT_TABLE_01": XXXXX/******** directory=DMP dumpfile=XXXXX_20160125_01.dmp LOGFILE=XXXXX_20160125.log TABLES=BASE_ACTIONPOWER,BASE_BANK,BASE_BANKMERGE,BASE_BANKTREE,BASE_BRCHBANKCTRL,BASE_CERTIFICATE,BASE_CESS,BASE_COREBANK,BASE_CURRENCY,BASE_DEPARTMENT,BASE_HOLIDAYCALENDAR,BASE_HOLIDAYDATE,BASE_INTEREST,BASE_INTERESTHIS,BASE_MAINAREA,BASE_MENU,BASE_PRODTYPECODE,BASE_RATE,BASE_ROLE,BASE_SYSLOG,BASE_SYSPARAM,BASE_TERMINALTELLER,BASE_USER,FINANCIAL_BANKPROFITLOG,FINANCIAL_DIVIDENDPLAN,FINANCIAL_FUNDPRICE,FINANCIAL_INTERESTRESET,FINANCIAL_ISSUE,FINANCIAL_ISSUEAUDIT,FINANCIAL_ISSUEAUDITHIS,FINANCIAL_ISSUEBRAND,FINANCIAL_ISSUECFL,FINANCIAL_ISSUECONTROL,FINANCIAL_ISSUEDIFFRATE,FINANCIAL_ISSUEDISCOUNT,FINANCIAL_ISSUEEXPD,FINANCIAL_ISSUEEXT,FINANCIAL_ISSUEFEE,FINANCIAL_ISSUEFORCUSTRISKLVL,FINANCIAL_ISSUEFUNDSTRANSFER,FINANCIAL_ISSUEOBSERV,FINANCIAL_ISSUEPAY,FINANCIAL_ISSUEPROFIT,FINANCIAL_ISSUEQTYSPLIT,FINANCIAL_ISSUESELLCTRL,FINANCIAL_ISSUESERIAL,FINANCIAL_ISSUEVARIABLE,FINANCIAL_ISSUEWORKTIME,FINANCIAL_LIQUIDATEACT,FINANCIAL_MESSAGEINFO,FINANCIAL_PERIOD,FINANCIAL_PRICE,FINANCIAL_PRICEHIS,FINANCIAL_REFERINDEX,FINANCIAL_POSITION,RICH_AUTOTRADE,RICH_CUSTACCOUNT,RICH_CUSTAUTOTRADE,RICH_CUSTAUTOTRADEHIS,RICH_CUSTCAPITAL,RICH_CUSTFAVORABLE,RICH_CUSTFREEZEUNIT,RICH_CUSTFUNDPROFIT,RICH_CUSTIMPAWN,RICH_CUSTKEEPBAL,RICH_CUSTOMERINFO,RICH_CUSTOMERINFOHIS,RICH_CUSTORDERTRADE,RICH_CUSTPAYAMOUNTLOG,RICH_CUSTPRODUCTBAL,RICH_CUSTPRODUCTBALQTY,RICH_CUSTPROFITDCCY,RICH_CUSTPROFITLOG,RICH_CUSTPROFITNORMAL,RICH_CUSTPROFITPAYMODE,RICH_CUSTPROFITPAYMODEHIS,RICH_CUSTRISKLVL,RICH_FUNDTRADELOG,RICH_NOPAYAMOUNT,RICH_NORMALPAY,RICH_ORDERTRADE,RICH_SMSCMDSIGN,RICH_SMSCMDTRADE,RICH_STARTBAL,RICH_STARTBALHIS,financial_positionhis,financial_positiontra,financial_positioncst,financial_positionacc,corp_stattemptab,corp_stattemptabacc,corp_stattemptabcst,FINANCIAL_ICCARDCODE,BASE_FINANCIALICCARD,FINANCIAL_ISSUESPECIFICATION,PA_RPT_PARAM,FINANCIAL_SALEBANK_HIS,RICH_TRA
Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 6.913 GB
Processing object type TABLE_EXPORT/TABLE/TABLE
Processing object type TABLE_EXPORT/TABLE/INDEX/INDEX
Processing object type TABLE_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type TABLE_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type TABLE_EXPORT/TABLE/COMMENT
Processing object type TABLE_EXPORT/TABLE/TRIGGER
Processing object type TABLE_EXPORT/TABLE/INDEX/FUNCTIONAL_AND_BITMAP/INDEX
Processing object type TABLE_EXPORT/TABLE/INDEX/STATISTICS/FUNCTIONAL_AND_BITMAP/INDEX_STATISTICS
Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
. . exported "XXXXX"."RICH_TRADELOG_HIS":"P_201411" 0 KB 0 rows
. . exported "XXXXX"."RICH_TRADELOG_HIS":"P_201412" 0 KB 0 rows
. . exported "XXXXX"."RICH_TRADELOG_HIS":"P_999999" 0 KB 0 rows
ORA-39166: Object RIC was not found.
Master table "XXXXX"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded
******************************************************************************
Dump file set for XXXXX.SYS_EXPORT_TABLE_01 is:
/softtmp/dmp/XXXXX_20160125_01.dmp
Job "XXXXX"."SYS_EXPORT_TABLE_01" completed with 1 error(s) at 16:42:37
删除sys下的DATAPUMP序列号，因為該序列号不能超過6位，後續版本已經fixed的了。
到此所有的處理算是基本完畢，過程很簡單，但是不同的場景處理方式有很多種，我們應該學會靈活變通。