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Analyze Oracle COMPATIBLE parameters

2025-01-18 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >

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This article mainly introduces "analyzing Oracle COMPATIBLE parameters". In daily operation, I believe many people have doubts about analyzing Oracle COMPATIBLE parameters. The editor consulted all kinds of data and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts of "analyzing Oracle COMPATIBLE parameters". Next, please follow the editor to study!

1.48 compatible

COMPATIBLE enables you to use the new version of Oracle while ensuring that the database can be downgraded to an earlier version.

Attribute description

Parameter type

String

Syntax

COMPATIBLE = release_number

Default value

19.0.0

Modifiable

No

Can be modified in PDB

No

Value range

11.2.0 default release

Basic

Yes

Oracle RAC

Multiple instances must have the same value.

Setting up COMPATIBLE ensures that new features do not write data formats or structures that are incompatible with previous versions to disk to prevent future degradations. Higher value feature COMPATIBLE is required

This COMPATIBLE parameter specifies the Oracle version number that the database disk format must be compatible with. You can downgrade the database to the version specified in the COMPATIBLE parameter or any later version.

Note:

COMPATIBLE can increase the value of a parameter to a higher version, but can never reduce it to a lower version.

Note:

When using a standby database, this parameter must have the same value on both the primary and standby databases.

Typically, the user COMPATIBLE remains the same when upgrading the Oracle software. After the upgrade, users will run the new version of Oracle software for several weeks to ensure that the new version is working properly. After that, the user can choose to update COMPATIBLE

When the value of the COMPATIBLE parameter is set to 12.2.0.0.0, the maximum size of the SQL identifier increases from 30 bytes to 128 bytes.

Note:

The COMPATIBLE parameter must be specified as at least three decimal digits, with each pair of digits separated by dots, such as 19.0.0.

At this point, the study of "analyzing Oracle COMPATIBLE parameters" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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