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Hey Yo! SQLCMD may truncate your XML!

While trying to use SQLCMD to produce an app.config file, I encountered problems with the output being truncated. The script was similar to: DECLARE @appconfig XML SET @appconfig = ‘<configuration></configuration>’ … Insert configuration nodes — Output the config SELECT @appconfig as ApplicationConfiguration The default options for SQLCMD produced output like: ApplicationConfiguration ————————- <configuration><connecti (the value […]

SQL Truncation Attacks

SQL injection attacks are nothing new and hopefully everyone is protecting themselves from it. An interesting by-product of the standard method of protection from the basic sql injection attack (replace single quotes with two single quotes) is increasing the size of the original value. When building a command in a variable, its possible to truncate […]

Shrinking Databases bit-by-bit to avoid long delays

Michael Jones has a neat script for shrinking databases in small chunks to avoid having the server locked up for a long period. declare @sql varchar(8000) declare @name sysname declare @sizeMB int declare @UsedMB int declare @FreeMB int declare @ShrinkMB int — Desired free space in MB after shrink set @FreeMB = 1000 — Increment […]

Troubleshooting Delegation in SQL Server

I just came across a good article by Keith Brown on a common trap when setting up SQL Server with kerberos delegation. As he noted, the port number for the Sql Server Service should be specified when setting the service principal name (SPN). Delegation is a powerful feature of Active Directory but can be difficult […]

Cannot BACKUP or RESTORE a database snapshot

I’ve been beta testing SQL Backup 5 and came across an old problem. If you iterate through all the databases on a server and issue a BACKUP DATABASE for Database Snapshot you will receive an error message similar to: Msg 3002, Level 16, State 1, Line 1 Cannot BACKUP or RESTORE a database snapshot. Msg […]