commit rollback and savepoint in sql server

This article will describe the SQL Server session for you to kill, has been in the Killed/rollback State Situation analysis, tutorial how to:Today, a very strange situation, found a session exception, this session is simply executing a simple stored procedure, which uses the linked server (Linked

Event Cause: Recent research and development response, a database from 08 to 12 environment, the occasional write-operation delay problem; Event analysis: After excluding system resource contention, initial analysis may cause the synchronization mode AlwaysOn node to often appear the problem of session timeout waiting for submission due to network jitter. After troubleshooting, the extended event found that 35202 errors occurred irregularly, which is the message of a replica connection recov

If you have to be careful when you want to perform data churn in production, you can use transactions to verify in advance whether your own SQL is what you expect. Especially if there is a problem with the where condition of the update, the new record will exceed the expected range. As the following statement, a hurry I almost put cartid = 678417 Forget, if in production implementation impact is big. BEGIN TRANSACTIONUpdateCartitemSetDeleted=0 whereCa

10 errors that SQL Server DBA can easily commitTranslated from: http://sqlsentry.tv/top-10-administrative-mistakes-on-sql-server/In addition to the top ten mistakes, other top-ranked errorsAside from SQL Server errors, these error

(MAX) SET @SQLTR = ' CREATE TRIGGER tg_ ' [emailprotected]+ ' _u Pdate on ' [emailprotected]+ ' after update,delete,insert as BEGIN SET NOCOUNT on; --============================== get guid========================================== DECLARE @NEWID VARCHAR (=NEWID) ()--=========================== Insert the deleted or new data into the backup table ========================= DECLARE @ROWCOUNT int Insert int O [dbo]. [Backup_ ' [emailprotected]+ '] SELECT @NEWID, ' DELETE ', * from delete