clear-checksums

clear-checksums clears all checksums and nullifies the MD5SUM column of the DATABASECHANGELOG table. They will be re-computed on the next database update --changesets that have been deployed will have their checksums re-computed, and pending changesets will be deployed.

Uses

clear-checksums is typically used when there is a [MD5Sum Check Failed] error message and there is a need to clear the checksums from the DATABASECHANGELOG table.

Syntax

To run the clear-checksums command, specify the database driver, classpath, and URL in the Liquibase properties file. For more information, see Create and Configure a liquibase.properties File. You can also specify these properties in your command line.

Then run the clear-checksums command:

liquibase clear-checksums

Command parameters

Attribute Definition Requirement

--url=<string>

The JDBC database connection URL. See Using JDBC URL in Liquibase.

 Required

--default-catalog-name=<string>

Name of the default catalog to use for the database connection

 Optional

--default-schema-name=<string>

Name of the default schema to use for the database connection. If defaultSchemaName is set, then objects do not have to be fully qualified. This means you can refer to just mytable instead of myschema.mytable.

Note: In the properties file and JAVA_OPTS only: in 4.18.0 and earlier, specify this parameter using the syntax defaultSchemaName. In 4.19.0 and later, use the syntax liquibase.command.defaultSchemaName.

Note: In Liquibase 4.12.0 and later, you can use mixed-case schema names if you set --preserve-schema-case to true. However, in Liquibase 4.12.0–4.22.0, the Liquibase validator still throws a DatabaseException error if you specify a mixed-case value of defaultSchemaName. In 4.23.0 and later, the Liquibase validator accepts any casing.

 Optional

--driver=<string>

The JDBC driver class

 Optional

--driver-properties-file=<string>

The JDBC driver properties file

 Optional

--password=<string>

Password to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional

--username=<string>

Username to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional
Attribute Definition Requirement

cmdArgs: { url: "<string>" }

The JDBC database connection URL. See Using JDBC URL in Liquibase.

 Required

cmdArgs: { default-catalog-name: "<string>" }

Name of the default catalog to use for the database connection

 Optional

cmdArgs: { default-schema-name: "<string>" }

Name of the default schema to use for the database connection. If defaultSchemaName is set, then objects do not have to be fully qualified. This means you can refer to just mytable instead of myschema.mytable.

Note: In the properties file and JAVA_OPTS only: in 4.18.0 and earlier, specify this parameter using the syntax defaultSchemaName. In 4.19.0 and later, use the syntax liquibase.command.defaultSchemaName.

Note: In Liquibase 4.12.0 and later, you can use mixed-case schema names if you set --preserve-schema-case to true. However, in Liquibase 4.12.0–4.22.0, the Liquibase validator still throws a DatabaseException error if you specify a mixed-case value of defaultSchemaName. In 4.23.0 and later, the Liquibase validator accepts any casing.

 Optional

cmdArgs: { driver: "<string>" }

The JDBC driver class

 Optional

cmdArgs: { driver-properties-file: "<string>" }

The JDBC driver properties file

 Optional

cmdArgs: { password: "<string>" }

Password to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional

cmdArgs: { username: "<string>" }

Username to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional
Attribute Definition Requirement

liquibase.command.url: <string>

liquibase.command.clearChecksums.url: <string>

The JDBC database connection URL. See Using JDBC URL in Liquibase.

 Required

liquibase.command.defaultCatalogName: <string>

liquibase.command.clearChecksums.defaultCatalogName: <string>

Name of the default catalog to use for the database connection

 Optional

liquibase.command.defaultSchemaName: <string>

liquibase.command.clearChecksums.defaultSchemaName: <string>

Name of the default schema to use for the database connection. If defaultSchemaName is set, then objects do not have to be fully qualified. This means you can refer to just mytable instead of myschema.mytable.

Note: In the properties file and JAVA_OPTS only: in 4.18.0 and earlier, specify this parameter using the syntax defaultSchemaName. In 4.19.0 and later, use the syntax liquibase.command.defaultSchemaName.

Note: In Liquibase 4.12.0 and later, you can use mixed-case schema names if you set --preserve-schema-case to true. However, in Liquibase 4.12.0–4.22.0, the Liquibase validator still throws a DatabaseException error if you specify a mixed-case value of defaultSchemaName. In 4.23.0 and later, the Liquibase validator accepts any casing.

 Optional

liquibase.command.driver: <string>

liquibase.command.clearChecksums.driver: <string>

The JDBC driver class

 Optional

liquibase.command.driverPropertiesFile: <string>

liquibase.command.clearChecksums.driverPropertiesFile: <string>

The JDBC driver properties file

 Optional

liquibase.command.password: <string>

liquibase.command.clearChecksums.password: <string>

Password to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional

liquibase.command.username: <string>

liquibase.command.clearChecksums.username: <string>

Username to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional
Attribute Definition Requirement

JAVA_OPTS=-Dliquibase.command.url=<string>

JAVA_OPTS=-Dliquibase.command.clearChecksums.url=<string>

The JDBC database connection URL. See Using JDBC URL in Liquibase.

 Required

JAVA_OPTS=-Dliquibase.command.defaultCatalogName=<string>

JAVA_OPTS=-Dliquibase.command.clearChecksums.defaultCatalogName=<string>

Name of the default catalog to use for the database connection

 Optional

JAVA_OPTS=-Dliquibase.command.defaultSchemaName=<string>

JAVA_OPTS=-Dliquibase.command.clearChecksums.defaultSchemaName=<string>

Name of the default schema to use for the database connection. If defaultSchemaName is set, then objects do not have to be fully qualified. This means you can refer to just mytable instead of myschema.mytable.

Note: In the properties file and JAVA_OPTS only: in 4.18.0 and earlier, specify this parameter using the syntax defaultSchemaName. In 4.19.0 and later, use the syntax liquibase.command.defaultSchemaName.

Note: In Liquibase 4.12.0 and later, you can use mixed-case schema names if you set --preserve-schema-case to true. However, in Liquibase 4.12.0–4.22.0, the Liquibase validator still throws a DatabaseException error if you specify a mixed-case value of defaultSchemaName. In 4.23.0 and later, the Liquibase validator accepts any casing.

 Optional

JAVA_OPTS=-Dliquibase.command.driver=<string>

JAVA_OPTS=-Dliquibase.command.clearChecksums.driver=<string>

The JDBC driver class

 Optional

JAVA_OPTS=-Dliquibase.command.driverPropertiesFile=<string>

JAVA_OPTS=-Dliquibase.command.clearChecksums.driverPropertiesFile=<string>

The JDBC driver properties file

 Optional

JAVA_OPTS=-Dliquibase.command.password=<string>

JAVA_OPTS=-Dliquibase.command.clearChecksums.password=<string>

Password to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional

JAVA_OPTS=-Dliquibase.command.username=<string>

JAVA_OPTS=-Dliquibase.command.clearChecksums.username=<string>

Username to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional
Attribute Definition Requirement

LIQUIBASE_COMMAND_URL=<string>

LIQUIBASE_COMMAND_CLEAR_CHECKSUMS_URL=<string>

The JDBC database connection URL. See Using JDBC URL in Liquibase.

 Required

LIQUIBASE_COMMAND_DEFAULT_CATALOG_NAME=<string>

LIQUIBASE_COMMAND_CLEAR_CHECKSUMS_DEFAULT_CATALOG_NAME=<string>

Name of the default catalog to use for the database connection

 Optional

LIQUIBASE_COMMAND_DEFAULT_SCHEMA_NAME=<string>

LIQUIBASE_COMMAND_CLEAR_CHECKSUMS_DEFAULT_SCHEMA_NAME=<string>

Name of the default schema to use for the database connection. If defaultSchemaName is set, then objects do not have to be fully qualified. This means you can refer to just mytable instead of myschema.mytable.

Note: In the properties file and JAVA_OPTS only: in 4.18.0 and earlier, specify this parameter using the syntax defaultSchemaName. In 4.19.0 and later, use the syntax liquibase.command.defaultSchemaName.

Note: In Liquibase 4.12.0 and later, you can use mixed-case schema names if you set --preserve-schema-case to true. However, in Liquibase 4.12.0–4.22.0, the Liquibase validator still throws a DatabaseException error if you specify a mixed-case value of defaultSchemaName. In 4.23.0 and later, the Liquibase validator accepts any casing.

 Optional

LIQUIBASE_COMMAND_DRIVER=<string>

LIQUIBASE_COMMAND_CLEAR_CHECKSUMS_DRIVER=<string>

The JDBC driver class

 Optional

LIQUIBASE_COMMAND_DRIVER_PROPERTIES_FILE=<string>

LIQUIBASE_COMMAND_CLEAR_CHECKSUMS_DRIVER_PROPERTIES_FILE=<string>

The JDBC driver properties file

 Optional

LIQUIBASE_COMMAND_PASSWORD=<string>

LIQUIBASE_COMMAND_CLEAR_CHECKSUMS_PASSWORD=<string>

Password to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional

LIQUIBASE_COMMAND_USERNAME=<string>

LIQUIBASE_COMMAND_CLEAR_CHECKSUMS_USERNAME=<string>

Username to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

 Optional

Note: The username and password attributes are not required for connections and systems which use alternate means of authentication. Also, you can specify database credentials as part of the url attribute.

Output

When successful, the clear-checksums command produces the following output:

Liquibase Pro 3.9.0  licensed to Liquibase Pro Customer until Tue Sep 22 19:00:00 CDT 2020
Liquibase command 'clear-checksums' was executed successfully.

Related links