Kingbasees heterogeneous database migration guide (2. Overview)

2.  summary

Take an application system from a database （ Hereinafter referred to as source database ） Migrate to another database （ Hereinafter referred to as the target database ） when , The following factors need to be considered ：

1. Application migration cycle / cost

a. The more compatible the target database is with the source database , The smaller the migration cycle ; This article No 2 The higher the content described in part and the support for the source database , The faster the migration .

b. During migration , Whether there are tools to support and accelerate the migration process ;

c. After migration , Whether there are tools to support data comparison , Reduce the application testing process . Whether the target database has rich migration AIDS .

2. Whether the target database product has a mature migration service team

Whether the service support team of the target database is mature , Whether the management is perfect , Whether there is a perfect application transplantation method .

3. Whether the target database meets the use needs of the application

Check whether the product capability of the target database can replace the source 4. database , It mainly includes the following aspects ：

a. The object of the source database used , Whether the target database can support

b. The access interface of the source database used （SQL/PLSQL）, Whether the target database can support

c. Development interface and development framework used , Whether the target database supports

d. Third party products or components used , Whether the target database supports

e. Whether the target database supports the high availability scheme of the source system

f. Whether the target database can meet the performance needs of the application system , If domestic CPU, It is more necessary to evaluate the target database in the designated country CPU Performance on ; It may be necessary to optimize the processing of the application , Complete the joint solution of performance , Does the target database provide performance analysis and tuning tools .

4. Whether the target database can meet the requirements of the system cutover

It mainly includes ：

a. The application switches from the source database to the target database , Whether the business can be stopped , If not, stop , Whether the target database can support real-time data synchronization ;

b. After transplantation , Whether you need to run with the source database , Is there a plan to support the target database

This document is about the above problems , Introduce KingbaseES Product application migration support system , And the process of application migration .