The database must not be running when you change the location of a transaction log.
For more information about how to choose the location of a transaction log, see Protecting against media failure on the database file.
From the Tools menu, choose SQL Anywhere 10 > Change Log File Settings.
Follow the instructions in the wizard.
Ensure that the database is not running.
Enter the following command at the command prompt:
dblog -t new-log-file database-file
See Transaction Log utility (dblog).