Feb 9, 2011

Import SQL Server Error Log into Table

CREATE PROC sp_import_errorlog
(
 @log_name sysname,
 @log_number int = 0,
 @overwrite bit = 0
)
AS
/*************************************************************************************************
Purpose: To import the SQL Server error log into a table, so that it can be queried
Written by: Anand Mahendra

Tested on:  SQL Server 2000
Limitation:  With error messages spanning more than one line only the first line is included in the table
Email:   anandbox@sify.com
Example 1:  To import the current error log to table myerrorlog
  EXEC sp_import_errorlog 'myerrorlog'
Example 2:  To import the current error log to table myerrorlog, and overwrite the table
  'myerrorlog' if it already exists
  EXEC sp_import_errorlog 'myerrorlog', @overwrite = 1
Example 3:  To import the previous error log to table myerrorlog
  EXEC sp_import_errorlog 'myerrorlog', 1
Example 4:  To import the second previous error log to table myerrorlog
  EXEC sp_import_errorlog 'myerrorlog', 2
*************************************************************************************************/
BEGIN
 SET NOCOUNT ON


 DECLARE @sql varchar(500) --Holds to SQL needed to create columns from error log
 IF (SELECT OBJECT_ID(@log_name,'U')) IS NOT NULL
  BEGIN
   IF @overwrite = 0
    BEGIN
     RAISERROR('Table already exists. Specify another name or pass 1 to @overwrite parameter',18,1)
     RETURN -1
    END
   ELSE
    BEGIN
     EXEC('DROP TABLE ' + @log_name)
    END
  END

 --Temp table to hold the output of sp_readerrorlog
 CREATE TABLE #errlog
 (
  err varchar(1000),
  controw tinyint
 )
 --Populating the temp table using sp_readerrorlog
 INSERT #errlog
 EXEC sp_readerrorlog @log_number
 --This will remove the header from the errolog
 SET ROWCOUNT 4
 DELETE #errlog
 SET ROWCOUNT 0
 SET @sql =  'SELECT
    CONVERT(DATETIME,LEFT(err,23)) [Date],
    SUBSTRING(err,24,10) [spid],
    RIGHT(err,LEN(err) - 33) [Message],
    controw
   INTO ' + QUOTENAME(@log_name) +
   ' FROM #errlog ' +
   'WHERE controw = 0'
 --Creates the table with the columns Date, spid, message and controw
 EXEC (@sql)
 --Dropping the temporary table
 DROP TABLE #errlog
 SET NOCOUNT OFF
PRINT 'Error log successfully imported to table: ' + @log_name
END

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