Dedicated Administrator Connection (DAC)


SQLCMD is particularly useful for creating batch scripting jobs for administrative purposes. SQLCMD has replace OSQL. It is using OLEDB to connect the SQL Server. However, as an emergency utility to diagnose and hopefully correct server problems, it has no peer. By Using the –A argument, the SQLCMD utilizes an exclusive connection to SQL Server. If no other connection is possible, the SQLCMD –A command is the last and best hope for diagnosing server problems and preventing data loss. By default, only local DACs are allowed because the DAC components only listen on the loopback connection. However, remote DACs can be enabled using the sp_configure stored procedure by changing the remote admin connections option to true, as the following code illustrates:

sp_configure ‘remote admin connections’, 1
RECONFIGURE

Advertisements

Thanks for the comment, will get back to you soon... Jugal Shah

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s