Error Handling In Sql Server Stored Procedures 2008
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Sql Server 2005 Stored Procedure Error Handling
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Exception Handling In Sql Server 2008 Stored Procedure Example
up vote 1 down vote favorite 1 I'm writing a stored procedure that needs to clean up some data if an insert fails. I'd like it to perform the clean up, but return the original error if this insert fails (primarily for logging as I want to see exactly why the insert failed). Basically like a throw; in C#. Is there a simple way to do this? BEGIN TRY mysql stored procedure error handling Insert into table (col1) values ('1") END TRY BEGIN CATCH --do clean up here --then throw original error END TRY Is this feasible/good practice? In the application code that calls the proc, I'm handling the error from an application standpoint, but the clean up statements seem to better fit inside the proc. sql-server-2008 stored-procedures error-handling share|improve this question asked Jan 7 '13 at 20:08 Tim Coker 4,59111847 usually you do roll back and clean up in the catch block. I personally thought that was one of the best uses of catch block in stored procedures. You just need to be sure that any of your roll back/clean up is not going to create more errors and that whatever you are trying to clean up, is malleable after your error. –Pow-Ian Jan 7 '13 at 20:11 1 The short answer is to use RAISERROR because there is no THROW in SQL Server until version 2012. This article gives the long answer: simple-talk.com/sql/database-administration/… –Pondlife Jan 7 '13 at 20:16 1 In SQL Server 2012 you can use THROW(). In SQL Server 2008 you can't throw/re-raise. –Aaron Bertrand Jan 7 '13 at 20:16 1 Can you explain how the selected answer actually sol
| Tags: Stored Procedures, SQL Server 2005, Transactions, SQL Server 2008 Features, Error Handling This article covers the basics of TRY CATCH error handling in T-SQL introduced in SQL Server 2005. It includes the usage of
Oracle Stored Procedure Error Handling
common functions to return information about the error and using the TRY CATCH block in
Sql Stored Procedure Try Catch
stored procedures and transactions. SQL Server uses the following syntax to capture errors in Transact-SQL statements: BEGIN TRY SELECT [First] = 1 SELECT error handling in sql server 2012 [Second] = 1/0 SELECT [Third] = 3 END TRY BEGIN CATCH PRINT 'An error occurred' END CATCH This returns the following output: First ----------- 1 (1 row(s) affected) Second ----------- (0 row(s) affected) An error occurred A http://stackoverflow.com/questions/14203256/stored-procedure-error-handling-clean-up-but-return-original-error key difference from SQL Server 2000 is that execution is halted when SQL Server encounters an error. At that point execution transfers to the CATCH block. This error isn't returned to the client application or calling program. The TRY CATCH block consumes the error. Error Functions Inside the CATCH block there are a number of specialized functions to return information about the error. BEGIN TRY SELECT [Second] = 1/0 END TRY BEGIN CATCH SELECT [Error_Line] = http://www.sqlteam.com/article/handling-sql-server-errors ERROR_LINE(), [Error_Number] = ERROR_NUMBER(), [Error_Severity] = ERROR_SEVERITY(), [Error_State] = ERROR_STATE() SELECT [Error_Message] = ERROR_MESSAGE() END CATCH Second ----------- (0 row(s) affected) Error_Line Error_Number Error_Severity Error_State ----------- ------------ -------------- ----------- 2 8134 16 1 (1 row(s) affected) Error_Message --------------------------------------------------- Divide by zero error encountered. (1 row(s) affected) These are the functions you can use inside a CATCH block. These functions all return NULL if they are called from outside a CATCH block. ERROR_NUMBER. The number of the error that occurred. This is similar to @@ERROR except that it will return the same number for the duration of the CATCH block. ERROR_MESSAGE. The complete text of the error message including any substiture parameters such as object names. ERROR_LINE. This is the line number of the batch or stored procedure where the error occured. ERROR_SEVERITY. This is the severity of the error. The CATCH block only fires for errors with severity 11 or higher. Error severities from 11 to 16 are typically user or code errors. Severity levels from 17 to 25 are usually software or hardware errors where processing may not be able to continue. ERROR_STATE. This is sometimes used by the system to return more information about the error. ERROR_PROCEDURE. If the error was generated inside a stored procedure this will hold the name of the procedure. Trapping Errors in Stored Procedures A TRY CATCH block can
This part is also available in a Spanish translation by Geovanny Hernandez. Introduction This article is the first in a series of three about error and transaction handling in SQL Server. The aim http://www.sommarskog.se/error_handling/Part1.html of this first article is to give you a jumpstart with error handling by https://sqlxpertise.com/2011/06/03/error-handling-in-sql-server-2008-r2questions-answered/ showing you a basic pattern which is good for the main bulk of your code. This part is written with the innocent and inexperienced reader in mind, why I am intentionally silent on many details. The purpose here is to tell you how without dwelling much on why. If you take my words for your truth, stored procedure you may prefer to only read this part and save the other two for a later point in your career. On the other hand, if you question my guidelines, you certainly need to read the other two parts, where I go into much deeper detail exploring the very confusing world of error and transaction handling in SQL Server. Parts Two and Three, as well as the three appendixes, are directed towards stored procedure error readers with a more general programming experience, although necessarily not with SQL Server. This first article is short; Parts Two and Three are considerably longer. Table of Contents Introduction Index of All Error-Handling Articles Why Error Handling? Essential Commands TRY-CATCH SET XACT_ABORT ON General Pattern for Error Handling Three Ways to Reraise the Error Using error_handler_sp Using ;THROW Using SqlEventLog Final Remarks End of Part One Revision History Index of All Error-Handling Articles Here follows a list of all articles in this series: Part One - Jumpstart Error Handling (this article). Part Two - Commands and Mechanisms. Part Three - Implementation. Appendix 1 - Linked Servers. (Extends Part Two.) Appendix 2 - CLR. (Extends both Parts Two and Three.) Appendix 3 - Service Broker. (Extends Part Three.) All the articles above are for SQL2005 and later. For those who still are on SQL2000, there are two older articles: Error Handling in SQL Server 2000 – a Background. Implementing Error Handling with Stored Procedures in SQL2000. Why Error Handling? Why do we have error handling in our code? There are many reasons. In a forms application we validate the user input and inform the users of their mistakes. These user mistakes are anticipated errors. But we also need to handle unanticipated errors
2011 Arunraj Leave a comment Go to comments With reference to the Question posted by Hima Bindu Vejella on http://himabinduvejella.blogspot.com/2011/06/how-did-you-handle-errors-in-sqlserver.html, I have posted these answers, I hope you all find this usefull How did you handle errors in SqlServer 2008 R2? We handle errors using BEGIN TRY BEGIN TRANSACTION /* Insert or Update or Delete statements */ COMMIT TRANSACTION END TRY BEGIN CATCH INSERT INTO ErrorLog (ErrorNumber, ErrorSeverity, ErrorState, ErrorLine, ErrorProcedure, ErrorRelease) SELECT ERROR_NUMBER() AS ErrorNumber, ERROR_SEVERITY() AS ErrorSeverity, ERROR_STATE() as ErrorState, ERROR_LINE () as ErrorLine, ERROR_PROCEDURE() as ErrorProcedure, ERROR_MESSAGE() as ErrorMessage IF (XACT_STATE()) = -1 BEGIN ROLLBACK TRAN END ELSE IF (XACT_STATE()) = 1 BEGIN COMMIT TRAN END RAISEERROR(Application Error Occurred. Please contact administrator, 16, -1) END CATCH()
What are the different ways of handling errors in SQL Server? 1. We can handle errors by checking @@ERROR, if it’s not equal to 0, then we can use RAISERRROR to return error message to application 2. We can handle error by checking @@ERROR and @@ROWCOUNT in combination and then use RAISERROR or RETURN to return error message or code to application 3. We can use TRY..CATCH method Which is the optimized way to handle errors? The optimized way to handle errors is to create Error Log table with following columns (ErrorNumber, ErrorMessage, ErrorSeverity, ErrorState, ErrorProcedure, ErrorLine, UserName, HostName, ErrorDateTime, ApplicationName) and then create a Stored Procedure to get these columns as Input Parameter except ErrorDateTime, for which we can use GetDate() and then call this Stored Procedure inside BEGIN CATCH..END CATCH block What are the Built-In Objects available related to error handling? The following are the built in objects related to Error Handling and Information ERROR_NUMBER() – Returns Error Number of the Error that caused the CATCH block of TRY…CATCH to run ERROR_SEVERITY() – Returns severity of Error that caused the CATCH block of TRY…CATCH to run ERROR_STATE() – Returns State Number of the Error that caused the CATCH block of TRY…CATCH to run ERROR_LINE () – Returns the line number at which an error occurred that caused the CATCH block of TRY…CATCH to run ERROR_PROCEDURE() – Returns the