最近项目需要快速的拖取Oracle大容量表的数据到MYSQL中,因此写了一个多线程并发的java数据拖取工具,在此基础上抽象了一个比较通用的工具,目前是基于JDBC方式,因此支持oracle2oracle,oracle2mysql,mysql2mysql,mysql2oracle,mysql2sqlserver,sqlserver 2mysql等等,通过测试目前有oracle2mysql,mysql2oracle,支持windows和Linux。下面说明下使用方法和测试的用例。
第一步,配置需要同步的数据库和表,打开conf文件下的config.properties,conf文件下包含了其他数据同步的模版,下面举例多线程同步mysql的表到oracle中,config.properties是如何配置的。
#for source database parameters
source.dataSource.initialSize=10
source.dataSource.maxIdle=20
source.dataSource.minIdle=5
source.dataSource.maxActive=100
source.dataSource.maxWait=120000
source.jdbc.driverClassName=com.mysql.jdbc.Driver
source.jdbc.url=jdbc:mysql://10.224.56.188 : 3306/meetingdb?autoReconnect=true&characterEncoding=UTF-8
source.jdbc.username=test
source.jdbc.password=pass
#Target sync data threadNum=source.database.threadNum
source.database.threadNum=10
source.database.selectSql=select * from test where mod(CAST(FNV_64(PATHALIASID) AS UNSIGNED),#threadNum#)=?
#you can input many commands and split by ";" ,你可以打开注释加一些session级别的优化命令
#source.database.sessionCommand=ALTER SESSION SET DB_FILE_MULTIBLOCK_READ_COUNT=128;
#for target jdbc parameters
target.dataSource.initialSize=10
target.dataSource.maxIdle=20
target.dataSource.minIdle=5
target.dataSource.maxActive=100
target.dataSource.maxWait=120000
target.jdbc.driverClassName=oracle.jdbc.driver.OracleDriver
target.jdbc.url=jdbc: oracle: thin : @10.224.56.189:1521:PERFCON1
target.jdbc.username=test
target.jdbc.password=pass
target.database.insertSql=insert into test2(PATHALIASID,PATH,CREATETIME,LASTMODIFIEDTIME,OBJECTPREFIX,PATHMD5ID,COLLIDESWITH) values(?,?,?,?,?,?,?)
target.database.commitNum=1000
第二步,运行dataSync.sh或者dataSync.bat,开始同步数据。
具体的测试的用例如下:
Case 1 : oracle to mysql with multi_threads
source table:test
target table:test2
source.database.selectSql=select * from test where ORA_HASH(PATHALIASID,#threadNum#)=?
exeSql=select * from test where ORA_HASH(PATHALIASID,10)=10
...
exeSql=select * from test where ORA_HASH(PATHALIASID,10)=0
mysql> select count(*) from test2;
+----------+
| count(*) |
+----------+
| 218850 |
+----------+
Case 2 : mysql to oracle with multi_threads
source table:test
target table:test2
source.database.selectSql=select * from test where mod(CAST(FNV_64(PATHALIASID) AS UNSIGNED),#threadNum#)=?
exeSql=select * from test where mod(CAST(FNV_64(PATHALIASID) AS UNSIGNED),10)=10
...
exeSql=select * from test where mod(CAST(FNV_64(PATHALIASID) AS UNSIGNED),10)=0
SQL>select count(*) from test2;
COUNT(*)
----------
218850
case 3 :mysql to oracle with single process.
source.database.threadNum=1
source.database.selectSql=select * from test
exeSql=select * from test
SQL>select count(*) from test2;
COUNT(*)
----------
218850
获取可以运行的二进制运行程序或者源码,代码是完全free的,可以从以下地址获取:
免费下载地址在 http://linux.linuxidc.com/
用户名与密码都是www.linuxidc.com
具体下载目录在 /2012年资料/6月/1日/异构数据库多线程大表数据同步工具/
更多Oracle相关信息见 专题页面