![]() In the first release, the following trace flags are supported: 460, 2301, 2389, 2390, 2453, 2467, 7471, 8207, 9389, 1034 The list of supported trace flags will be expanded in the future based on customer requests. I strongly recommend that everyone enables this trace flag – there are no downsides. Managed Instance supports a subset of trace flags that cannot affect availability or stability of Managed Instance. You can enable it using DBCC TRACEON (3226, -1), where the -1 turns on the trace flag for all connections without having to restart SQL Server, and you can make it a startup trace flag too. Backups always print failure messages when they fail, so this trace flag is safe to enable. The trace flag stops successful backups from printing messages, so you only see messages when a backup fails. Remarks Trace flags are used to customize certain characteristics controlling how the instance of SQL Server operates. WITH NOINFOMSGS Suppresses all informational messages that have severity levels from 0 through 10. Kevin Farlee, the Storage Engine PM responsible for (among many other things) BACKUP and RESTORE has just blogged about a trace flag – 3226 – that’s been in the product since SQL Server 2000 and he’s planning to document this (and other) trace flags in this area starting in SQL Server 2008. 1 Disables the specified trace flags globally. If you’re taking very frequent log backups (say every 5 minutes) of multiple databases, that’s a significant amount of clutter in the logs. NOTE – Do you have monitoring based on these messages in the logs so you should not activate this.There’s a well known problem that every time a backup operation succeeds a message is written into the error log and Windows event log. Enabling this trace flag forces page allocations on uniform extents instead of mixed. When there are multiple TempDB data files, all files auto grow at the same time and by the same amount depending on growth settings. Turn the trace flags off and go on with migration. Enabling this feature forces SQL Server to auto grow all the TempDB files at the same time. (The -1 is so that it runs global on all sessions and not just on the one you are executing the command in)Ĭheck your Trace Flag status with DBCC TRACESTATUS. Trace flag 3226 suppress log messages of backups and 8002 sets CPU affinity, on Azure Managed instance you don't need them. If you are not able to restart, you can turn it on via DBCC TRACEON (3226, -1) but then it will just be running until the next restart of your SQL Service or if you deactivate it with DBCC TRACEOFF (3226,-1). ![]() It requires a reboot so it is a good thing to do during installation of your SQL Server. You can activate trace flag 3226 as a start-up parameter for the SQL Server service. This will not stop SQL Server writing in the log files if backups is failing. Thus, you get less spam and more relevant information in the error log and event log. With trace flag 3226 activated SQL do not write successful log-backups to SQL Error log or Windows Event log. ![]() I therefore prefer to use Trace Flag 3226. ![]() If you need to use those log files for troubleshooting, you have very large files to look in where most of the information is not about what possibly went wrong. If you have 500 databases and running log backups every 15 minutes, it will be 2000 rows in SQL Errorlog and 2000 rows in system event log per hour with information of successful backups. This would be the answer to my dreams - except it isnt working for me. Database restore internal information will be logged phase by phase. ![]() SQL Server writes by default in both SQL Error log and system event log when doing backups, both successful and failed. Last week there was a QOTD that dealt with using trace flag 3226 to suppress the success messages from backups. This trace flag can be used to stop the logging of successful backup messages in the log. If you have an SQL instance with many databases and have tried to locate information in the SQL Error log or system event log it can be a little difficult to find. ![]()
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