It is recommended that you upgrade dbmlsync and the SQL Anywhere database server at the same time. Version 16 MobiLink clients can only synchronize version 16 databases running on version 16 database servers.

Version 16 MobiLink clients require a version 16 or later MobiLink server for synchronization. Version 16 MobiLink clients do not synchronize with a MobiLink server earlier than version 16.

For information about upgrading MobiLink, see MobiLink upgrades.

You can upgrade MobiLink SQL Anywhere remote databases using the procedures for SQL Anywhere databases. For instructions, see SQL Anywhere Server upgrades.

When there is a schema change or other significant database change, you may need to perform a manual unload and reload. See Unloading/reloading a remote SQL Anywhere database manually.

When deploying a new version of a MobiLink application, it is recommended that you use a new script version for the synchronization scripts. For example, if the existing application uses a script version called v1, then the upgraded application could use a script version called v2. Both script versions can be in use at the same time, which makes it easier to upgrade the remote databases incrementally, rather than all at once.

For version 9.0.0 and later, the MobiLink server -zd option has been removed. If your deployment uses the -zd option and you want to upgrade, change your download scripts to accept the last download timestamp as the first parameter. Alternatively, you can upgrade your client and start using named parameters, which enable you to put script parameters in any order.