What's New in SQL Anywhere Studio
Upgrading Software and Databases
If you are upgrading an existing SQL Remote installation from version 6 or later, you must upgrade each database server before or along with its message agent (dbremote and ssremote). You can upgrade message agents in any order.
Version 5 users should follow the instructions in Upgrading version 5 SQL Remote installations instead of this section.
No need to upgrade databases Although it is not essential to upgrade databases, it is recommended for best performance that you upgrade the database file format by unloading and reloading your database. There is no need for all databases to be upgraded at the same time.
For information on upgrading your databases, see Upgrading a database, and Upgrading the database file format.
Software upgrades can be one site at a time Older Message Agents can exchange messages with Version 9 Message Agents as long as the COMPRESSION database option is set to a value of -1 (minus one). There is no need to upgrade software throughout the installation simultaneously.
Message Agent and database server can be upgraded separately The database server can be upgraded before the Message Agent. It is, however, recommended that you upgrade your Message Agent at the same time as the database server for performance reasons.