Goldengate各build与Oracle数据库版本间的兼容性

2010/12/07 by 2 Comments

因为在Edelivery.oracle.com上找不到Goldengate for Oracle 8i的build，所以一度猜想是不是能用GG for Oracle 9i对8i做extract。之后在metalink上发现了这个文档《Compatibility between OGG builds and Oracle database Versions》，明确介绍了ogg的build需要与数据库版本一致，即:

针对extract来说，Oracle数据库版本应与Oracle Golden Gate的build信息完全一致

举例而言

OGG 10g build(如Oracle GoldenGate V11.1.1.0.0 for Oracle 10g):该build可以在Oracle 10.1或10.2版本的数据库上做extract
OGG oracle 10.1 build:该build仅可以为Oracle 10.1版本的数据库做extract，其他版本均不可以
OGG oracle 10.2 build:该build仅可以为Oracle 10.2版本的数据库做extract，其他版本均不可以

针对replicat来说，数据库主版本号(major database version)应与OGG的build一致

举例而言

OGG 10g build:可以针对Oracle 10.1和10.2版本的数据库做replicat操作，其他版本均不可以
OGG oracle 10.1 build：可以针对Oracle 10.1和10.2版本的数据库做replicat操作，其他版本均不可以
OGG oracle 10.2 build：可以针对Oracle 10.1和10.2版本的数据库做replicat操作，其他版本均不可以

其他9i或者11g的OGG build与Oracle database版本间的兼容性也如上述关系一般。
该文档[1086154.1]还指出以上版本要求是因为各数据库版本间可能存在不同的data dictionary calls，而OGG中这部分代码是固定写死的:
“The reason behind these requirements is that the data dictionary calls may be different from one version of the database to the other and our code is database version specific”；
从这个文档来分析，不是因为Oracle各版本所产生的日志文件的格式存在差异而导致OGG无法做extract操作，那么如果在一个10g的数据库中设置了一个较低的compatible兼容性参数也不会导致OGG for Oracle 10g无法正确抽取日志文件了。
上述观点仍需测试，to be continued…….

Filed Under: GoldenGate, Oracle Tagged With: , ,

Comments

  1. admin says
    2010/12/07 at 00:33 
    Compatibility between OGG builds and Oracle database Versions

Can I use OGG build for oracle 10G to extract / replicat from /to Oracle 9i or oracle 11G database

Solution

Comments
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=== ODM Answer ===

Using a OGG 10g build you can replicat to oracle 10.1 or 10.2 but not to Oracle 9i or Oracle 11G

For an extract - The database should match exactly with the Oracle GG build

Scenarios

GG oracle 10G Build - Can extract from Oracle 10.1 or Oracle 10.2 and not from any other Oracle version
GG oracle 10.1 build – Can extract only from Oracle 10.1 and not from any other Oracle version
GG oracle 10.2 build – Can extract Only from Oracle 10.2 and not from any other Oracle version

For a replicat – The major database version should match with the Oracle GG build

Scenarios

GG oracle 10G Build – Can replicat to Oracle 10.1 or Oracle 10.2 and not to any other Oracle version
GG oracle 10.1 build – Can replicat to Oracle 10.1 , Oracle 10.2 and not to any other Oracle version
GG oracle 10.2 build – Can replicat to Oracle 10.1, Oracle 10.2 and not to any other Oracle version

The case is same with Oracle GG 9i build or GG 11g build.

The reason behind these requirements is that the data dictionary calls may be different 
from one version of the database to the other and our code is database version specific.
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  2. admin says
    2010/12/22 at 21:58

    Question:(OGG) the buildversion for the source and target must be same?

    Answer:Do you want to know whether OGG version on source and target should same or not?

    It is not mandatory to have same version of GoldenGate on both source and target. You can have different versions. But it is recommended to have same version on source and target server.

    What is your source and target OGG version?. If you 10.4.x on both source and target server, there is no harm in having different versions. If your source is 10.4.x and 10.0.x or prior version on target, then you may need to set some parameter on the source side.

    For more information, please refer our reference Guide for the parameter RECOVERYOPTIONS on Page 258. Also please refer EXTTRAIL and RMTTRAIL Parameters

    回复

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