validate command

The validate command checks and identifies any possible errors in a changelog that can cause the update command to fail.

Uses

The validate command is mainly used when you want to detect if there are any issues with a changelog before running the update command.

With the help of the validate command, you can avoid a partial update, where only some changesets are applied due to an error in your changelog file.

Use the validate command to ensure that:

• The XML/YAML/JSON/formatted SQL is structured correctly
• Referenced files can be found
• There are no duplicated id/author/file combinations
• There aren't any checksum errors
• Any required or not allowed attributes are correct for your database

Running the validate command

To run the validate command, type the following into your command line:

liquibase --changeLogFile=oracle_runWith_changelog.xml validate

Note: Enter the name of the changelog you want to use in place of oracle_runWith_changelog.xml.

validate global attributes

Attribute	Definition	Requirement
--changeLogFile *	The root changelog	Required
--url	The JDBC database connection URL	Required
--username	The database username	Required
--password	The database password	Required

* Liquibase will check nested changelogs for definitions of the changesets to validate.