不同表之间的数据同步
如果想将A数据库中TAB1表中的列（C1，C2）的新增或者变更数据实时的同步到B数据库中的TAB2表中的列（C3，C4）上，用OGG可以实现吗，不行用ETL工具可以实现嘛！关键是实时，或者写触发器？
求助各位！ 表的map for example:MAP US03.T52 TARGET US01.T53;
col 的map for example:COLMAP (usedefaults,
salary = sal) FOR EXAMPLE:
GGSCI (targetserver) > edit params RHREMD1
Replicat RHREMD1
-------------------------------------------------------------------
-- Replicat for HR Schema
-------------------------------------------------------------------
USERID 'GGER', PASSWORD "AACAAAAAAAAAAADAVHTDKHHCSCPIKAFB", ENCRYPTKEY default
AssumeTargetDefs
ReportCount Every 30 Minutes, Rate
Report at 01:00
ReportRollover at 01:15
DiscardFile dirrpt/RHREMD1.dsc, Append
DiscardRollover at 02:00 ON SUNDAY
Map HR.EMPLOYEES, Target HR.EMPLOYEES,COLMAP (USEDEFAULTS), FILTER (@RANGE (1,3));
Map HR.JOBS, Target HR.JOBS,COLMAP (USEDEFAULTS), FILTER (@RANGE (1,3));
Map HR.JOB_HISTORY, Target HR.JOB_HISTORY,COLMAP (USEDEFAULTS),
FILTER (@RANGE (1,3));
Map HR.LOCATIONS, Target HR.LOCATIONS,COLMAP (USEDEFAULTS), FILTER (@RANGE (1,3));
Map HR.DEPARTMENTS, Target HR.DEPARTMENTS,COLMAP (USEDEFAULTS),
FILTER (@RANGE (1,3));
Map HR.COUNTRIES, Target HR.COUNTRIES,COLMAP (USEDEFAULTS), FILTER (@RANGE (1,3));
Map HR.REGIONS, Target HR.REGIONS,COLMAP (USEDEFAULTS), FILTER (@RANGE (1,3));
Column Mapping: Overview
•
Oracle GoldenGate provides the capability to map columns from one table to another.
•
Data can be transformed between dissimilar database tables.
–
Use COLMAP to map target columns from your source columns.
•
Oracle GoldenGate automatically matches source to target column names with USEDEFAULTS.
•
Mapping can be applied when either extracting or replicating data.
MAP HR.CONTACT, TARGET HR.PHONE,
COLMAP (USEDEFAULTS,
NAME = CUST_NAME,
PHONE_NUMBER = @STRCAT( "(", AREA_CODE, ")",
PH_PREFIX, "-", PH_NUMBER ) );
Column Mapping: Building History
This example uses special values to build a history of operations data:
INSERTALLRECORDS
MAP SALES.ACCOUNT, TARGET REPORT.ACCTHISTORY,
COLMAP (USEDEFAULTS,
TRAN_TIME = @GETENV("GGHEADER","COMMITTIMESTAMP"),
OP_TYPE = @GETENV("GGHEADER", "OPTYPE"),
BEFORE_AFTER_IND =
@GETENV("GGHEADER", "BEFOREAFTERINDICATOR"),
);
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