Msg 7391 has no single fix. I list the causes I have hit on my servers, from distributed transactions on linked servers to DTC firewall settings, to try one by one.
SQL SERVER – Performance Optimization of SQL Query and FileGroups
My tips on transaction log placement, FileGroups for tables and non-clustered indexes, database size and autogrow settings for better SQL Server performance.
SQL SERVER – Fix: HResult 0x274D, SQLCMD Level 16, State 1 Error: Microsoft SQL Native Client : Login timeout expired
SQLCMD error HResult 0x274D, Microsoft SQL Native Client: Login timeout expired? TCP/IP is off by default in SQL Server 2005; enable it in Configuration Manager.
SQL SERVER – T-SQL Paging Query Technique Comparison – SQL 2000 vs SQL 2005
I compared a SQL Server 2005 paging query using ROW_NUMBER() with the SQL 2000 way of paging through temp or derived tables, both run on AdventureWorks.
SQL SERVER – 2005 – Performance Dashboard Reports
SQL Server 2005 Performance Dashboard Reports show CPU, IO, blocking and missing index problems as they happen. How to set them up and read them well.
SQL SERVER – TempDB is Full. Move TempDB from one drive to another drive.
When TempDB is Full, I investigate capacity and usage before moving its files. A move requires a planned restart.
STUFF Boundaries: Insert Text and Handle NULL Results
STUFF boundaries govern insertion and deletion. See valid positions, zero length, NULL replacement and out-of-range starts.
SQL SERVER – Index Seek Vs. Index Scan (Table Scan)
Index Scan retrieves all the rows from the table. Index Seek retrieves selective rows from the table.
SQL SERVER – Difference between DISTINCT and GROUP BY – Distinct vs Group By
What is the difference between DISTINCT and GROUP BY? They usually produce the same plan. Use GROUP BY for aggregates and DISTINCT to remove duplicates.
SQL SERVER – Fix : Error 8101 An explicit value for the identity column in table can only be specified when a column list is used and IDENTITY_INSERT is ON
Error 8101 means you gave a value for an identity column. What IDENTITY_INSERT does, why there are two different errors, and why TRY CATCH misses it.