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TIBCO ActiveSpaces® 4.8.0

# Using tibdg grid mode to Put a Data Grid into Maintenance Mode

The tibdg grid mode command can be used to put a data grid into maintenance mode which prevents data from being written into your data grid.

Putting your data grid into maintenance mode can be useful when:

- Performing data grid backups.
- Transitioning primary grids to mirror grids for disaster recovery.
- Performing system software upgrades.

## Syntax

    tibdg grid mode [-r realm_service_URL] [-g grid_name] grid mode maintenance|normal

The following operations are allowed in the maintenance mode:

- read operations

Warning: Write operations are not allowed and result in an exception.
In 'normal' mode both read and write operations are allowed.

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