When you are using database mirroring, extra steps are required to apply a SQL Anywhere maintenance release or EBF, or to upgrade the database file.
All database servers in a database mirroring system must use the same maintenance release of SQL Anywhere. If you use the following procedure to apply a SQL Anywhere maintenance release, the only time the database is not available is during steps 3 and 4.
Shut down the mirror server by running a dbstop command.
Install the new version of SQL Anywhere on the mirror server.
Shut down the primary and arbiter servers by running a dbstop command for each server.
Install the new version of SQL Anywhere on the primary server.
Restart the primary and mirror servers.
Install the new version of the software on the arbiter.
Restart the arbiter.
To install an EBF, you must perform the following steps for each database server in the mirroring system (primary, mirror, and arbiter servers):
Run a dbstop command to stop the database server.
Install the EBF.
Restart the database server.
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