ASA Database Administration Guide
  Backup and Data Recovery
    Backup and recovery tasks

Creating a database with a transaction log mirror

You can choose to maintain a transaction log mirror when you create a database. This option is available either from the CREATE DATABASE statement, from Sybase Central, or from the dbinit utility.

For more information about why you may wish to use a transaction log mirror, see Protecting against media failure on the transaction log.

To create a database that uses a transaction log mirror (Sybase Central)

1. Do one of the following:

   • If you are connected to a database, in the left pane, select the Adaptive Server Anywhere plug-in and then open the Utilities tab in the right pane. In the right pane, double-click Create Database.

   • If you are not connected to a database, click Tools > Adaptive Server Anywhere 9 > Create Database.

2. Follow the instructions in the wizard.

To create a database that uses a transaction log mirror (SQL)

• Use the CREATE DATABASE statement, with the TRANSACTION LOG clause.

  For more information, see CREATE DATABASE statement.

To create a database that uses a transaction log mirror (Command line)

• Use the dbinit command with the -m option. For example, the following command (which should be entered on one line) initializes a database named company.db, with a transaction log kept on a different device and a mirror on a third device.

  dbinit -t d:\log_dir\company.log -m
  e:\mirr_dir\company.mlg c:\db_dir\company.db

  For more information about initialization options, see Initialization utility options.