Shulou(Shulou.com)05/31 Report--

This article is to share with you what are the notes on the migration from MySQL to ORACLE programs, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

Considerations for migrating from MySQL to ORACLE programs

There are many application projects, at the beginning, using MYSQL database can basically achieve a variety of functional requirements. With the increase of application users and the increase of the amount of data, MYSQL is gradually overburdened: the connection is very slow or even downtime, so there is a need to move the data from MYSQL to ORACLE, and the application should be modified accordingly. I would like to summarize the following points for attention, hoping to be helpful to you.

1. Automatic growth of data type processing

MYSQL has auto-growing data types. You don't have to manipulate this field when you insert a record, and you will automatically get the data value.

ORACLE does not have an auto-growing data type, so you need to create an auto-growing serial number, and when you insert a record, you assign the next value of the serial number to this field.

CODE:

The name of the CREATE SEQUENCE serial number (preferably table name + serial number tag)

INCREMENT BY 1 START WITH 1

MAXVALUE 99999 CYCLE NOCACHE

The above are the matters needing attention in the migration from MySQL to ORACLE programs, and the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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