Administering : Working with SQL commands : Enabling and disabling SQL
  
Enabling and disabling SQL
The SQL page in the Advanced menu is enabled by default. You can disable or enable SQL by entering commands.
Procedure
1 Click the Settings icon Settings icon and then, from the Advanced group, click SQL.
2 Do one of the following:
To
Complete the following step
disable SQL
Enter the following command:
update configurationproperties
set value='false'
where name='sql.enable'
enable SQL
Enter the following command:
update configurationproperties
set value='true'
where name='sql.enable'
3 Restart the server.
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Working with SQL commands