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Dedicated Admin Console (DAC) a reserved connection on SQL Server that grants special access to system tables and can help diagnose problems
4
votes
Accepted
How do I log into the Dedicated Admin Console (DAC) on Linux?
Clients
There are two Linux clients from Microsoft that can connect to SQL Server's Dedicated Administrator Connection (DAC),
mssql-cli. … sqlcmd -I -S admin:localhost -U sa
Server Settings
If connecting from outside localhost you may have to enable remote DAC first. …
2
votes
Why am I getting "Invalid object name 'sys.sysobjvalues'."
Connection (DAC). … Prolly not a good idea, but for proof it'll work connect to DAC (-S admin:localhost on Linux)
sqlcmd -S admin:localhost -U sa -q "SELECT * FROM sys.sysobjvalues;" | less -S …
2
votes
Accepted
SQL Server Error "Database 'mssqlsystemresource' does not exist."
The mssqlsystemresource database is only available in single-user mode. On Linux, that means
sudo systemctl stop mssql-server
sudo -u mssql /opt/mssql/bin/sqlservr -m