How to make SET XACT_ABORT ON rollback the transaction?
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22-06-2021 - |
Question
Based on the Books Online documentation of SET XACT_ABORT ON
, i get the impression that if a T-SQL statement raises a run-time error, the entire transaction is terminated and rolled back:
Remarks
When SET XACT_ABORT is ON, if a Transact-SQL statement raises a run-time error, the entire transaction is terminated and rolled back.
Testing this in SQL Server 2008 R2:
SET XACT_ABORT ON;
BEGIN TRANSACTION;
PRINT 'TranCount befor an error = '+CAST(@@Trancount AS varchar(50))
DROP TABLE QuertyAsdf
PRINT 'TranCount after an error = '+CAST(@@Trancount AS varchar(50))
Gives the output:
TranCount befor an error = 1
Msg 3701, Level 11, State 5, Line 6
Cannot drop the table 'QwertyAsdf', because it does not exist or you do not have permission.
TranCount after an error = 1
i was also under the impression that SET XACT_ABORT ON
terminates the batch if there's an error:
SET XACT_ABORT ON instructs SQL Server to rollback the entire transaction and abort the batch when a run-time error occurs.
That sounds handy. How can i make it do that too?
Solution
The SQL Server only rollback transactions when Severity level greater or equals 16.
See example:
Msg 544, Level 16, State 1, Line 1
Cannot insert explicit value for identity column in table 'ORC_ORCAMENTO' whenIDENTITY_INSERT is set to OFF.
Test on SQL Server 2008 R2
SET XACT_ABORT ON;
BEGIN TRANSACTION;
PRINT 'TranCount befor an error = '+CAST(@@Trancount AS varchar(50))
insert into ORC_ORCAMENTO (ORCID, ORCNOME, ORCATIVO) VALUES (1, 'TESTE_ALEXP', 0);
PRINT 'TranCount after an error = '+CAST(@@Trancount AS varchar(50))
Returns
TranCount befor an error = 1
Msg 544, Level 16, State 1, Line 5
Cannot insert explicit value for identity column in table 'ORC_ORCAMENTO' when IDENTITY_INSERT is set to OFF.
TranCount after an error = 0
See Microsoft Error Message Levels on
OTHER TIPS
When you use xact abort on, in the try
catch
statement, you can manually raise an error to make the transaction roll back.
set xact_abort on;
begin try
...dml statements here....
if conditions here...
raiseerror(....);
end try
begin catch
end catch