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Oracle數據遷移MySQL的三種簡單方法
瀏覽：2日期：2023-09-18 20:52:52
目錄前言:測試遷移方法:遷移方式一(navicat)遷移方式二(navicat+sqluldr+load data infile)遷移方式三(navicat+Oracle GoldenGate(OGG))總結前言:
現今，Oracle數據遷移MySQL的需求已經越來越普遍，主要的遷移場景大致可以分為三類，第一類是涉及小表以及少量表的一次性遷移，無需進行增量同步，第二類是涉及大表以及多表的一次性遷移，第三類是涉及增量實時同步，而對于數據的遷移方法，常見的方式有使用第三方的同步工具CDC進行Oracle到MySQL的數據遷移、使用開源的同步工具以及應用層面進行遷移同步。
基于作者的遷移實施經驗，本文接下來將講述三種操作相對簡單，可落地的Oracle數據遷移MySQL的方法。
測試遷移方法:遷移方法適合場景測試場景navicat操作簡單，同步效率一般，適合小表的一次性遷移Oracle一次性同步表test.test1到MySQL下的db1.test1navicat+sqluldr+load data infile操作較復雜，同步效率高，適合少量大表的一次性遷移Oracle一次性同步表test.test1到MySQL下的db1.test1navicat+Oracle GoldenGate(OGG)操作復雜，同步效率較高，適合需要大批量的大表進行遷移以及需要實時增量同步Oracle全量+實時增量同步表test.test1,test2到MySQL下的db1.test1,test2遷移方式一(navicat)這種遷移方式主要適合小表的一次性遷移，navicat的同步效率速度一般。
遷移開始之前，我們需要先安裝navicat，在一臺能訪問Oracle源端和MySQL目標端的機器上安裝即可。
安裝完navicat之后，配置源端Oracle連接
配置目標端MySQL連接
開始進行遷移，選擇工具--->數據傳輸
選擇源端Oracle以及目標端MySQL
下一步選擇要同步的表TEST，也可以選擇同步全部表
傳輸模式選擇自動，點下一步開始進行同步
傳輸同步完成，整個同步的效率還是較慢的，7.2W的數據，用了1分鐘。
遷移方式二(navicat+sqluldr+load data infile)這種遷移方式主要適合少量大表的一次性遷移，通過navicat工具進行Oracle-->MySQL表結構轉化,再通過sqluldr將Oracle數據導出到本地文件，最后再通過load data infile將數據導入MySQL。
注:navicat工具雖然有同步數據的功能，但在實際的操作過程中，同步數據的效率以及成功率都很低，所以這里只作為數據字典轉化的工具。
使用navicat工具進行表結構同步，步驟可以參考遷移方式一里面的操作，主要在數據傳輸同步時，選項里面只同步表結構，不創建記錄。
點擊開始，完成表結構同步
接下來進行數據的導出導入，先安裝導出工具sqluldr
---解壓安裝包unzip sqluldr2linux64.zip ./sqluldr2linux64.bin --help---拷貝sqluldr2linux64.bin到$ORACLE_HOME的bin目錄cp -rp sqluldr2linux64.bin $ORACLE_HOME/bin---重命名為sqluldr2.binmv sqluldr2linux64.bin sqluldr2.bin測試安裝成功
[oracle@rac19a ~]$ sqluldr2.bin --help?SQL*UnLoader: Fast Oracle Text Unloader (GZIP, Parallel), Release 4.0.1(@) Copyright Lou Fangxin (AnySQL.net) 2004 - 2010, all rights reserved.?License: Free for non-commercial useage, else 100 USD per server.?Usage: SQLULDR2 keyword=value [,keyword=value,...]?Valid Keywords: user = username/password@tnsname sql = SQL file name query = select statement field = separator string between fields record = separator string between records rows = print progress for every given rows (default, 1000000) file = output file name(default: uldrdata.txt) log = log file name, prefix with + to append mode fast = auto tuning the session level parameters(YES) text = output type (MYSQL, CSV, MYSQLINS, ORACLEINS, FORM, SEARCH). charset = character set name of the target database. ncharset= national character set name of the target database. parfile = read command option from parameter file ? for field and record, you can use '0x' to specify hex character code, \r=0x0d \n=0x0a |=0x7c ,=0x2c, \t=0x09, :=0x3a, #=0x23, '=0x22 '=0x27使用sqluldr導出為文本類型為MYSQL
sqluldr2.bin user=test/oracle@pdb1 query='select * from test' text=MYSQL field=',' charset=AL32UTF8 head='NO' file=/home/oracle/test_001.csv log=test.log導出過程很快，58w的數據，只需要7秒
0 rows exported at 2022-10-12 22:18:14, size 0 MB. 583680 rows exported at 2022-10-12 22:18:21, size 108 MB. output file /home/oracle/test_001.csv closed at 583680 rows, size 108 MB.再將從Oracle導出的MYSQL文件導入MySQL數據庫
LOAD DATA INFILE '/tmp/test_001.csv' INTO TABLE test FIELDS TERMINATED BY ',' ENCLOSED BY ''';導入過程很快，58w的數據，只需要13秒
test@mysql.sock 22:38: [db1]>LOAD DATA INFILE '/tmp/test_001.csv' INTO TABLE test FIELDS TERMINATED BY ',' ENCLOSED BY ''';Query OK, 583680 rows affected (13.43 sec)Records: 583680 Deleted: 0 Skipped: 0 Warnings: 0整個數據同步過程還是較快的，但操作步驟較為繁瑣，不太適合多表操作。
遷移方式三(navicat+Oracle GoldenGate(OGG))這種遷移方式適合大批量的大表或者需要增量同步的表進行遷移，支持全量初始化+Oracle GoldenGate(OGG)增量同步，通過navicat工具進行Oracle-->MySQL表結構轉化，再通過數據同步工具OGG進行全量表初始化以及后續的增量同步。
注意:使用增量方式同步的表都需要有主鍵，確保每行數據的唯一。
先使用navicat進行表結構的轉化，具體參考遷移方式二里面的步驟。
Oracle源端配置OGG準備
1 數據庫開啟歸檔模式---查看是否開啟歸檔模式archive log list---開啟歸檔模式startup mountalter database archvielog ;alter database open;?2 數據庫開啟force_logging---查看是否開啟force loggingselect force_logging from v$database;----開啟force loggingalter database force logging;alter system switch logfile;?3 數據庫開啟補充日志supplemental logging---查看補充日志SELECT supplemental_log_data FROM v$database; ---開啟補充日志ALTER DATABASE ADD SUPPLEMENTAL LOG DATA; Alter system switch logfile;4 開啟ogg參數alter system set enable_goldengate_replication=true scope=both;5 配置stream_pool大小(MAX_SGA_SIZE * # of integrated Extracts) + 25% head room For example, using the default values for the MAX_SGA_SIZE with two integrated Extracts: ( 1GB * 2 ) * 1.25 = 2.50GB STREAMS_POOL_SIZE = 2560MMySQL目標端配置OGG準備
1 開啟bin_log---確認是否開啟bin_logshow variables like 'log_bin';2 開啟bin_log(需要重啟生效)在my,cnf 中 [mysqld] 添加如下[mysqld]# binlog configurationlog-bin = /usr/local/var/mysql/logs/mysql-bin.logexpire-logs-days = 14max-binlog-size = 500Mserver-id = 1?2 確認binlog_format----確認格式為rowshow variables like 'binlog_format';?3 確認sql_mode ----確認包含STRICT_TRANS_TABLESshow variables like 'sql_mode';?4 確認版本----確認版本，5.7.10之后才支持部分DDL（CREATE TABLE, ALTER TABLE, and DROP TABLE operations are supported.）select version();創建ogg同步用戶
1 oracle源端同步用戶創建
create tablespace ogg_tbs datafile size 1g;create user ogg identified by 'oggoracle';grant resource,dba,connect to ogg;2 mysql目標端同步用戶創建
CREATE USER ogg IDENTIFIED by 'oggmysql';GRANT ALL PRIVILEGES ON *.* TO 'ogg'@'%';Oracle源端安裝ogg軟件
1 配置環境變量
---/home/oracle/.bash_profileexport OGG_HOME=/u01/app/oggexport PATH=$OGG_HOME:$PATH2 解壓安裝ogg軟件
---解壓安裝ogg軟件，安裝包:p31766135_191004_Linux-x86-64.zipcd /tmp/ unzip p31766135_191004_Linux-x86-64.zip cd 31766135/mv files/* /u01/app/ogg/---驗證oracle@rac19b ~]$ ggsci ?Oracle GoldenGate Command Interpreter for OracleVersion 19.1.0.0.4 31637694_FBOLinux, x64, 64bit (optimized), Oracle 19c on Aug 19 2020 20:08:53Operating system character set identified as UTF-8.?Copyright (C) 1995, 2019, Oracle and/or its affiliates. All rights reserved.?GGSCI (rac19b) 1>3 創建ogg配置目錄
GGSCI (rac19b) 10> create subdirs?Creating subdirectories under current directory /home/oracle?Parameter file /u01/app/ogg/dirprm: created.Report file /u01/app/ogg/dirrpt: created.Checkpoint file/u01/app/ogg/dirchk: created.Process status files /u01/app/ogg/dirpcs: created.SQL script files /u01/app/ogg/dirsql: created.Database definitions files /u01/app/ogg/dirdef: created.Extract data files /u01/app/ogg/dirdat: created.Temporary files/u01/app/ogg/dirtmp: created.Credential store files /u01/app/ogg/dircrd: created.Masterkey wallet files /u01/app/ogg/dirwlt: created.Dump files /u01/app/ogg/dirdmp: created.?GGSCI (rac19b) 11>4 啟動MGR進程
---編輯mgr配置cd /u01/app/ogg/./ggsciGGSCI (rac19b) 1> edit params mgr---配置以下參數PORT 7809 autorestart extract * ,waitminutes 2,resetminutes 5PURGEOLDEXTRACTS /u01/app/ogg/dirdat/*,USECHECKPOINTS,MINKEEPDAYS 5LAGREPORTHOURS 1LAGINFOMINUTES 30LAGCRITICALMINUTES 45 ---啟動mgr進程GGSCI (rac19b) 1> start mgrManager started.?GGSCI (rac19b) 2> info all?Program Status Group Lag at Chkpt Time Since Chkpt?MANAGER RUNNING?MySQL目標端安裝ogg軟件
1 配置環境變量
---/etc/profileexport OGG_HOME=/opt/oggexport PATH=$OGG_HOME:$PATH2 解壓安裝ogg軟件
---解壓安裝ogg軟件，安裝包:ggs_Linux_x64_MySQL_64bit.tar cd ogg/tar xvf /tmp/ggs_Linux_x64_MySQL_64bit.tar ---驗證[mysql@rac19a ~]$ ggsci ?Oracle GoldenGate Command Interpreter for MySQLVersion 19.1.0.0.3 OGGCORE_19.1.0.0.0_PLATFORMS_190907.0144Linux, x64, 64bit (optimized), MySQL Enterprise on Sep 7 2019 08:41:32Operating system character set identified as UTF-8.?Copyright (C) 1995, 2019, Oracle and/or its affiliates. All rights reserved.3 創建ogg配置目錄
GGSCI (rac19a) 1> create subdirs?Creating subdirectories under current directory /home/mysql?Parameter file /opt/ogg/dirprm: created.Report file /opt/ogg/dirrpt: created.Checkpoint file/opt/ogg/dirchk: created.Process status files /opt/ogg/dirpcs: created.SQL script files /opt/ogg/dirsql: created.Database definitions files /opt/ogg/dirdef: created.Extract data files /opt/ogg/dirdat: created.Temporary files/opt/ogg/dirtmp: created.Credential store files /opt/ogg/dircrd: created.Masterkey wallet files /opt/ogg/dirwlt: created.Dump files /opt/ogg/dirdmp: created.4 啟動MGR進程
---編輯mgr配置cd /opt/ogg/./ggsciGGSCI (rac19b) 1> edit params mgr---配置以下參數PORT 7809 AUTOSTART REPLICAT *AUTORESTART REPLICAT *,RETRIES 5,WAITMINUTES 2,RESETMINUTES 10PURGEOLDEXTRACTS /opt/ogg/dirdat/*,USECHECKPOINTS,MINKEEPDAYS 5ACCESSRULE, PROG *, IPADDR 192.168.2.*, ALLOWLAGREPORTHOURS 1LAGINFOMINUTES 30LAGCRITICALMINUTES 45---啟動mgr進程GGSCI (rac19a) 2> start mgrManager started.??GGSCI (rac19a) 3> info all?Program Status Group Lag at Chkpt Time Since Chkpt?MANAGER RUNNING5 配置全局文件以及檢查表
---ogg連接MySQLGGSCI (rac19a DBLOGIN as ogg) 8> dblogin sourcedb db1@192.168.2.201:3306,userid ogg,password oggmysqlSuccessfully logged into database.---創建檢查表GGSCI (rac19a DBLOGIN as ogg) 9> ADD CHECKPOINTTABLE db1.checkpoint?Successfully created checkpoint table db1.checkpoint.?GGSCI (rac19a DBLOGIN as ogg) 10> ---配置文件設置全局檢查表GGSCI (rac19a DBLOGIN as ogg) 10> edit params ./GLOBALS ---添加以下配置CHECKPOINTTABLE db1.checkpointOracle源端配置抽取以及投遞進程(增量進程)
1 對同步表添加補充日志
---ogg連接OracleGGSCI (rac19b) 3> dblogin userid ogg password oggoracle Successfully logged into database.---為表test.test1添加同步日志GGSCI (rac19b as ogg@testdb) 4> add trandata test.test1 ?2022-10-13 13:08:58 INFO OGG-15132 Logging of supplemental redo data enabled for table TEST.TEST1.?2022-10-13 13:08:58 INFO OGG-15133 TRANDATA for scheduling columns has been added on table TEST.TEST1.?2022-10-13 13:08:58 INFO OGG-15135 TRANDATA for instantiation CSN has been added on table TEST.TEST1.?2022-10-13 13:08:59 INFO OGG-10471 ***** Oracle Goldengate support information on table TEST.TEST1 ***** Oracle Goldengate support native capture on table TEST.TEST1.Oracle Goldengate marked following column as key columns on table TEST.TEST1: ID.---為表test.test2添加同步日志GGSCI (rac19b as ogg@testdb) 5> add trandata test.test2?2022-10-13 13:09:04 INFO OGG-15132 Logging of supplemental redo data enabled for table TEST.TEST2.?2022-10-13 13:09:04 INFO OGG-15133 TRANDATA for scheduling columns has been added on table TEST.TEST2.?2022-10-13 13:09:04 INFO OGG-15135 TRANDATA for instantiation CSN has been added on table TEST.TEST2.?2022-10-13 13:09:04 INFO OGG-10471 ***** Oracle Goldengate support information on table TEST.TEST2 ***** Oracle Goldengate support native capture on table TEST.TEST2.Oracle Goldengate marked following column as key columns on table TEST.TEST2: ID.?GGSCI (rac19b as ogg@testdb) 6>2 創建EXTRACT抽取進程
GGSCI (rac19b) 2> edit params e_test?extract E_TESTSETENV (ORACLE_HOME = '/u01/app/oracle/product/19.0.0/dbhome_1')SETENV (ORACLE_SID = 'testdb')SETENV (NLS_LANG = 'AMERICAN_AMERICA.AL32UTF8')userid ogg, password oggoracleexttrail ./dirdat/es?gettruncates TRANLOGOPTIONS INCLUDEREGIONID,EXCLUDEUSER oggTRANLOGOPTIONS BUFSIZE 2048000TRANLOGOPTIONS DBLOGREADER,DBLOGREADERBUFSIZE 2048000?DISCARDFILE ./dirrpt/E_TEST.dsc,APPEND,MEGABYTES 1000DISCARDROLLOVER AT 6:00REPORTROLLOVER AT 6:00REPORTCOUNT EVERY 1 HOURS,RATE??FETCHOPTIONS MISSINGROW ABENDSTATOPTIONS REPORTFETCH?WARNLONGTRANS 1H,CHECKINTERVAL 10m?DYNAMICRESOLUTIONTABLE TEST.TEST1;TABLE TEST.TEST2;3 設置EXTRACT抽取進程參數
GGSCI (rac19b) 2> edit params e_test?extract E_TESTSETENV (ORACLE_HOME = '/u01/app/oracle/product/19.0.0/dbhome_1')SETENV (ORACLE_SID = 'testdb')SETENV (NLS_LANG = 'AMERICAN_AMERICA.AL32UTF8')userid ogg, password oggoracleexttrail ./dirdat/es?gettruncates TRANLOGOPTIONS INCLUDEREGIONID,EXCLUDEUSER oggTRANLOGOPTIONS BUFSIZE 2048000TRANLOGOPTIONS DBLOGREADER,DBLOGREADERBUFSIZE 2048000?DISCARDFILE ./dirrpt/E_TEST.dsc,APPEND,MEGABYTES 1000DISCARDROLLOVER AT 6:00REPORTROLLOVER AT 6:00REPORTCOUNT EVERY 1 HOURS,RATE??FETCHOPTIONS MISSINGROW ABENDSTATOPTIONS REPORTFETCH?WARNLONGTRANS 1H,CHECKINTERVAL 10m?DYNAMICRESOLUTIONTABLE TEST.TEST1;TABLE TEST.TEST2;4 創建EXTRACT投遞進程
GGSCI (rac19b) 3> add extract P_TEST,exttrailsource ./dirdat/esEXTRACT added.?GGSCI (rac19b) 4> add RMTTRAIL ./dirdat/rs,ext P_TEST,megabytes 1000RMTTRAIL added.?GGSCI (rac19b) 5>?5 設置EXTRACT投遞進程參數
extract P_TESTuserid ogg, password oggoraclermthost 192.168.2.201, mgrport 7809rmttrail /opt/ogg/dirdat/rspassthru?DISCARDFILE ./dirrpt/P_TEST.dsc,APPEND,MEGABYTES 1000DISCARDROLLOVER AT 6:00?REPORTROLLOVER AT 6:00REPORTCOUNT EVERY 1 HOURS,RATE?TABLE TEST.TEST1;TABLE TEST.TEST2;6 啟動源端抽取以及投遞進程
---啟動抽取以及投遞進程GGSCI (rac19b) 8> start *test?Sending START request to MANAGER ...EXTRACT E_TEST starting?Sending START request to MANAGER ...EXTRACT P_TEST starting?---確認狀態正常runningGGSCI (rac19b) 14> info all?Program Status Group Lag at Chkpt Time Since Chkpt?MANAGER RUNNING EXTRACT RUNNING E_TEST 00:00:02 00:00:07 EXTRACT RUNNING P_TEST 00:00:00 00:00:03 ?GGSCI (rac19b) 15> ---確認目標端能接收到隊列文件?[mysql@rac19a dirdat]$ ls -rlthtotal 20K-rw-r----- 1 mysql mysql 19K Oct 13 13:24 rs000000000[mysql@rac19a dirdat]$MySQL目標端配置復制進程(增量進程)
1 添加復制進程
GGSCI (rac19a DBLOGIN as ogg) 11> add replicat r_test,exttrail /opt/ogg/dirdat/rs,checkpointtable db1.checkpoint REPLICAT added.?GGSCI (rac19a DBLOGIN as ogg) 12> info all?Program Status Group Lag at Chkpt Time Since Chkpt?MANAGER RUNNING REPLICAT STOPPED R_TEST 00:00:00 00:00:042 配置復制進程參數
GGSCI (rac19a DBLOGIN as ogg) 13> edit params r_test?replicat r_testsetenv (MYSQL_HOME='/usr/local/mysql')setenv (MYSQL_UNIX_PORT='/opt/mysql/data/mysql.sock')dboptions host 192.168.2.201,connectionport 3306targetdb db1,userid ogg, password oggmysql?discardfile /opt/ogg/dirrpt/r_test.dsc,append,megabytes 1000DISCARDROLLOVER AT 6:00?REPERROR (DEFAULT, ABEND)?MAXTRANSOPS 5000 HANDLECOLLISIONSREPORTROLLOVER AT 6:00REPORTCOUNT EVERY 1 HOURS, RATE MAP test.test1, TARGET db1.test1;MAP test.test2, TARGET db1.test2;3 HANDLECOLLISIONS參數說明
參數是實現 OGG 全量數據與增量數據銜接的關鍵，其實現原理是在全量數據初始完成之后，開啟增量抽取進程，應用全量數據初始化期間產生的 redo log。
當全量應用完成后，開啟增量回放進程，應用全量期間的增量數據。可能會出現數據沖突的情況，這就是為什么表一定要有主鍵或者唯一鍵，使用該參數后增量回放 DML 語句時主要有以下沖突場景及處理邏輯：
1 目標端不存在 delete 語句的記錄，忽略該問題并不記錄到 discardfile。
2 目標端丟失 update 記錄，更新的是主鍵值，update 轉換成 insert，更新的鍵值是非主鍵，忽略該問題并不記錄到 discardfile。
3 目標端重復 insert 已存在的主鍵值，這將被 replicat 進程轉換為 UPDATE 現有主鍵值的。
4 在初始化數據，并追完增量數據之后，建議把HANDLECOLLISIONS參數去掉，Oracle官方建議不要一直使用該參數,這可能導致數據不準。
Oracle源端配置數據初始化進程(數據全量初始化進程)
1 添加初始化進程
GGSCI (rac19b) 17> add extract e_init,sourceistableEXTRACT added.2 配置初始化進程
GGSCI (rac19b) 20> edit params e_init?extract e_initSETENV (ORACLE_HOME = '/u01/app/oracle/product/19.0.0/dbhome_1')SETENV (ORACLE_SID = 'testdb')SETENV (NLS_LANG = 'AMERICAN_AMERICA.AL32UTF8')userid ogg, password oggoracleRMTHOST 192.168.2.201,MGRPORT 7809RMTTASK REPLICAT,GROUP r_init?table test.test1;table test.test2;MySQL目標端配置數據初始化進程(數據全量初始化進程)
1 添加初始化進程
GGSCI (rac19b) 17> add extract e_init,sourceistableEXTRACT added.2 配置初始化進程
GGSCI (rac19b) 20> edit params e_init?extract e_initSETENV (ORACLE_HOME = '/u01/app/oracle/product/19.0.0/dbhome_1')SETENV (ORACLE_SID = 'testdb')SETENV (NLS_LANG = 'AMERICAN_AMERICA.AL32UTF8')userid ogg, password oggoracleRMTHOST 192.168.2.201,MGRPORT 7809RMTTASK REPLICAT,GROUP r_init?table test.test1;table test.test2;全量數據初始化
數據初始化會將全表的數據通過創建的ogg進程e_init,r_init從Oracle源端同步到MySQL目標端。
1 啟動Oracle源端的e_init初始化進程
GGSCI (rac19a DBLOGIN as ogg) 17> add replicat r_init,specialrun REPLICAT added.2 目標端查看同步的進度
GGSCI (rac19a DBLOGIN as ogg) 18> edit params r_init?replicat r_initsetenv (MYSQL_HOME='/usr/local/mysql')setenv (MYSQL_UNIX_PORT='/opt/mysql/data/mysql.sock')dboptions host 192.168.2.201,connectionport 3306targetdb db1,userid ogg, password oggmysqldiscardfile /opt/ogg/dirrpt/r_init.dsc,append,megabytes 1000MAXTRANSOPS 5000 MAP test.test1, TARGET db1.test1;MAP test.test2, TARGET db1.test2;3 同步完成，會輸出總的數量
Report at 2022-10-13 14:35:19 (activity since 2022-10-13 14:30:57)?Output to r_init:?From Table TEST.TEST1: # inserts: 999901 # updates: 0 # deletes: 0 # upserts: 0 # discards: 0From Table TEST.TEST2: # inserts: 1000000 # updates: 0 # deletes: 0 # upserts: 0 # discards: 0??REDO Log Statistics Bytes parsed 0 Bytes output 285986537增量數據同步
1 啟動目標端復制進程r_test
GGSCI (rac19a DBLOGIN as ogg) 65> start r_test?Sending START request to MANAGER ...REPLICAT R_TEST starting??GGSCI (rac19a DBLOGIN as ogg) 66> info all?Program Status Group Lag at Chkpt Time Since Chkpt?MANAGER RUNNING REPLICAT RUNNING R_TEST 00:00:00 00:00:012 查看增量同步信息
GGSCI (rac19a DBLOGIN as ogg) 67> stats r_test?Sending STATS request to REPLICAT R_TEST ...?Start of Statistics at 2022-10-13 14:45:24.?Replicating from TEST.TEST1 to db1.test1:?---collisions解決沖突數據的行數*** Total statistics since 2022-10-13 14:45:17 *** Total inserts0.00 Total updates0.00 Total deletes 99.00 Total upserts0.00 Total discards 0.00 Total operations 99.00 Total delete collisions 99.00??Replicating from TEST.TEST2 to db1.test2:---增量update了10行*** Total statistics since 2022-10-13 14:45:17 *** Total inserts0.00 Total updates 10.00 Total deletes0.00 Total upserts0.00 Total discards 0.00 Total operations 10.00??End of Statistics.?3 注釋去除HANDLECOLLISIONS參數
注:要在增量同步進程應用完初始化期間產生的日志以及實時同步之后，再去除參數。
#編輯配置文件，注釋---HANDLECOLLISIONSGGSCI (rac19a DBLOGIN as ogg) 71> edit params r_test?replicat r_testsetenv (MYSQL_HOME='/usr/local/mysql')setenv (MYSQL_UNIX_PORT='/opt/mysql/data/mysql.sock')dboptions host 192.168.2.201,connectionport 3306targetdb db1,userid ogg, password oggmysql?discardfile /opt/ogg/dirrpt/r_test.dsc,append,megabytes 1000DISCARDROLLOVER AT 6:00?REPERROR (DEFAULT, ABEND)?MAXTRANSOPS 5000??---HANDLECOLLISIONSREPORTROLLOVER AT 6:00REPORTCOUNT EVERY 1 HOURS, RATE MAP test.test1, TARGET db1.test1; MAP test.test2, TARGET db1.test2;?#重啟進程生效GGSCI (rac19a DBLOGIN as ogg) 73> stop r_test?Sending STOP request to REPLICAT R_TEST ...Request processed.??GGSCI (rac19a DBLOGIN as ogg) 74> start r_test?Sending START request to MANAGER ...REPLICAT R_TEST starting??GGSCI (rac19a DBLOGIN as ogg) 75>4 測試數據同步情況
Oracle源端刪除999行數據，當前數據99001
SQL> select count(*) from test.test2;? COUNT(*)---------- 1000000?SQL> delete from test.test2 where rownum<1000;?999 rows deleted.?SQL> commit;?Commit complete.?SQL> select count(*) from test.test2;? COUNT(*)---------- 999001?SQL>MySQL目標端同步刪除的操作，數據 一致都為999001
root@mysql.sock 14:33: [db1]>select count(*) from db1.test2;+----------+| count(*) |+----------+| 999001 |+----------+1 row in set (0.17 sec)?root@mysql.sock 14:54: [db1]>?使用navicat+Oracle GoldenGate(OGG)的方式，操作步驟比較復雜，但如果需要遷移的表多，并且需要實時的增量同步，那么還是比較適合的。
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