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SQL Anywhere 12.0.0 (Français) » SQL Anywhere Server - Database Administration » Configuring your database » Database options » Setting database options

 

Scope and duration of database options

You can set options at 3 levels of scope: public, user, and temporary.

Temporary options take precedence over user and public settings. User-level options take precedence over public settings. If you set a user level option for the current user, the corresponding temporary option is set as well.

Some options (such as COMMIT behavior) are database-wide in scope. Setting these options requires DBA authority. Other options (such as isolation_level) can also be applied to just the current connection, and need no special permissions.

Changes to option settings take place at different times, depending on the option. Changing a global option such as recovery_time takes place the next time the database is started.

Generally, only options that affect the current connection take place immediately. You can change option settings in the middle of a transaction, for example. One exception to this is that changing options when a cursor is open can lead to unreliable results. For example, changing date_format may not change the format for the next row when a cursor is opened. Depending on the way the cursor is being retrieved, it may take several rows before the change works its way to the user.

 Setting public options
 Setting temporary options
 Setting options for a SQL statement
 See also