SQL Server

Using DebugLogFilePath to Debug a Crash

If a crash is suspected to occur within a Chilkat method call, it can be debugged using the VerboseLogging and DebugLogFilePath as shown here. SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @success int
    SELECT @success = 0

    -- If a crash is suspected to occur within a Chilkat method call, it can be debugged using the VerboseLogging and DebugLogFilePath as shown here.
    -- 
    -- NOTE: The same technique applies for any Chilkat class that has the DebugLogFilePath property.
    -- Most Chilkat classes have DebugLogFilePath.

    DECLARE @crypt int
    EXEC @hr = sp_OACreate 'Chilkat.Crypt2', @crypt OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- First make sure VerboseLogging is turned on.
    EXEC sp_OASetProperty @crypt, 'VerboseLogging', 1

    -- Set the DebugLogFilePath to the path of a log file that will be created automatically.
    -- If the file already exists, Chilkat will append to it.
    EXEC sp_OASetProperty @crypt, 'DebugLogFilePath', 'c:/someDir/debugLog.txt'

    -- Reproduce the problem.

    -- ...
    EXEC sp_OAMethod @crypt, 'VerifyP7M', @success OUT, 'c:/someDir/someFile.p7m'
    -- ...

    -- If a crash occurred within Chilkat, then the debugLog.txt will contain information that
    -- can be sent to support@chilkatsoft.com

    -- ------------------------------------------------------------------------------------------------
    -- Note: Given that the debug log file is always appended, the log file might grow 
    -- to a very large size.  You can prevent the continual growth of the log file by
    -- deleting the log file at certain points, such as after a Chilkat method returns.
    -- 
    -- Given that we're only interested in the log file for Chilkat calls that crash or hang,
    -- it's OK to delete the log file after a Chilkat method that returns.
    -- 
    -- The next call to a Chilkat method will re-create the log file.  If the Chilkat call crashes
    -- or hangs, then you'll be left with just the log of the crash or hang.
    -- ------------------------------------------------------------------------------------------------

    EXEC @hr = sp_OADestroy @crypt


END
GO