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SQL Remote installations include a consolidated database and many remote databases, together with a SQL Remote Message Agent at each site.
At each site, the SQL Remote Message Agent handles the sending and receiving of messages. The messages take the form of SQL statements, and the database server handles the actual execution of those SQL statements.
The upgrade requirements for SQL Remote are as follows:
Software upgrades can be one site at a time Older Message Agents (dbremote) can exchange messages with version 12 Message Agents. For version 5 of SQL Remote, the version 5 Message Agents can exchange messages with version 12 Message Agents, as long as the compression database option is set to a value of -1. There is no need to upgrade software throughout the installation simultaneously. See compression option [SQL Remote].
Upgrade databases If you are upgrading a remote or consolidated database that used SQL Anywhere version 9 or lower, you must 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 instructions on unloading and reloading the database, see Rebuilding version 9 and earlier databases for version 12.
Upgrading Adaptive Server Enterprise consolidated databases SQL Remote no longer supports Adaptive Server Enterprise consolidated databases. To synchronize Adaptive Server Enterprise databases, you should upgrade to MobiLink.
For information about migrating from SQL Remote to MobiLink, see http://www.sybase.com/detail?id=1034174#335.
Upgrading with SQL Remote Support for the VIM and MAPI message systems for SQL Remote was removed in version 11.0.0. When you upgrade a database that uses VIM or MAPI to SQL Anywhere version 12, you must change the message type to File, FTP, or SMTP. If the message type is MAPI or VIM, dbremote.exe does not start.
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