One minute, your files are all there. The next minute they’re gone.

Data loss is often a tragic and traumatic experience for most computer users. It is often due to hard drive failure, accidental formatting, electronic malfunctioning or a product of “natural calamities”. This seems to be not much of a problem when there are viable data back-ups that the user creates. However, the problem comes when we tarry on making our back-up files, which is not a rare practice by the way. Yet even for those who prepare back-up files still fail to check on the viability of their back-ups.

Continue reading “One minute, your files are all there. The next minute they’re gone.”

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A Team That Gleamed

Too many techies get a bad rap for lacking teamwork and communications skills. The stereotype is that while techies are great at what they are trained to do, they cannot parlay their knowledge onto others. Because of the stereotype that techies cannot communicate, they also can be stigmatized that they lack adequate teamwork skills.

Continue reading “A Team That Gleamed”

The Birth of Internet Access

Internet access and its beginnings can be accredited in large part to the collective efforts of many individuals around the globe. However, it all began back in the late 60s when the U.S. military wanted to create a network of computers that could communicate together. This network was to become known as ARPANET. By the mid 1980s, the National Science Foundation improved the networks ability to transfer information at faster speeds. As a result, and by the 90s, Internet service providers (ISP’s) and Web sites began popping-up offering Internet access to the public, thereby, ushering in the age of Internet access.

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Elmah database scripts

Elmah download page: https://elmah.github.io/downloads/#elmah-12-sp2

/*

ELMAH - Error Logging Modules and Handlers for ASP.NET
Copyright (c) 2004-9 Atif Aziz. All rights reserved.

Author(s):

Atif Aziz, http://www.raboof.com
Phil Haacked, http://haacked.com

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

*/

-- ELMAH DDL script for Microsoft SQL Server 2000 or later.

-- $Id: SQLServer.sql addb64b2f0fa 2012-03-07 18:50:16Z azizatif $

DECLARE @DBCompatibilityLevel INT
DECLARE @DBCompatibilityLevelMajor INT
DECLARE @DBCompatibilityLevelMinor INT

SELECT
@DBCompatibilityLevel = cmptlevel
FROM
master.dbo.sysdatabases
WHERE
name = DB_NAME()

IF @DBCompatibilityLevel <> 80
BEGIN

SELECT @DBCompatibilityLevelMajor = @DBCompatibilityLevel / 10,
@DBCompatibilityLevelMinor = @DBCompatibilityLevel % 10

PRINT N'
===========================================================================
WARNING!
---------------------------------------------------------------------------

This script is designed for Microsoft SQL Server 2000 (8.0) but your
database is set up for compatibility with version '
+ CAST(@DBCompatibilityLevelMajor AS NVARCHAR(80))
+ N'.'
+ CAST(@DBCompatibilityLevelMinor AS NVARCHAR(80))
+ N'. Although
the script should work with later versions of Microsoft SQL Server,
you can ensure compatibility by executing the following statement:

ALTER DATABASE ['
+ DB_NAME()
+ N']
SET COMPATIBILITY_LEVEL = 80

If you are hosting ELMAH in the same database as your application
database and do not wish to change the compatibility option then you
should create a separate database to host ELMAH where you can set the
compatibility level more freely.

If you continue with the current setup, please report any compatibility
issues you encounter over at:

http://code.google.com/p/elmah/issues/list

===========================================================================
'
END
GO

/* ------------------------------------------------------------------------
TABLES
------------------------------------------------------------------------ */

CREATE TABLE [dbo].[ELMAH_Error]
(
[ErrorId] UNIQUEIDENTIFIER NOT NULL,
[Application] NVARCHAR(60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Host] NVARCHAR(50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Type] NVARCHAR(100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Source] NVARCHAR(60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Message] NVARCHAR(500) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[User] NVARCHAR(50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[StatusCode] INT NOT NULL,
[TimeUtc] DATETIME NOT NULL,
[Sequence] INT IDENTITY (1, 1) NOT NULL,
[AllXml] NTEXT COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL
)
ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

GO

ALTER TABLE [dbo].[ELMAH_Error] WITH NOCHECK ADD
CONSTRAINT [PK_ELMAH_Error] PRIMARY KEY NONCLUSTERED ([ErrorId]) ON [PRIMARY]
GO

ALTER TABLE [dbo].[ELMAH_Error] ADD
CONSTRAINT [DF_ELMAH_Error_ErrorId] DEFAULT (NEWID()) FOR [ErrorId]
GO

CREATE NONCLUSTERED INDEX [IX_ELMAH_Error_App_Time_Seq] ON [dbo].[ELMAH_Error]
(
[Application] ASC,
[TimeUtc] DESC,
[Sequence] DESC
)
ON [PRIMARY]
GO

/* ------------------------------------------------------------------------
STORED PROCEDURES
------------------------------------------------------------------------ */

SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO

CREATE PROCEDURE [dbo].[ELMAH_GetErrorXml]
(
@Application NVARCHAR(60),
@ErrorId UNIQUEIDENTIFIER
)
AS

SET NOCOUNT ON

SELECT
[AllXml]
FROM
[ELMAH_Error]
WHERE
[ErrorId] = @ErrorId
AND
[Application] = @Application

GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO

CREATE PROCEDURE [dbo].[ELMAH_GetErrorsXml]
(
@Application NVARCHAR(60),
@PageIndex INT = 0,
@PageSize INT = 15,
@TotalCount INT OUTPUT
)
AS

SET NOCOUNT ON

DECLARE @FirstTimeUTC DATETIME
DECLARE @FirstSequence INT
DECLARE @StartRow INT
DECLARE @StartRowIndex INT

SELECT
@TotalCount = COUNT(1)
FROM
[ELMAH_Error]
WHERE
[Application] = @Application

-- Get the ID of the first error for the requested page

SET @StartRowIndex = @PageIndex * @PageSize + 1

IF @StartRowIndex <= @TotalCount
BEGIN

SET ROWCOUNT @StartRowIndex

SELECT
@FirstTimeUTC = [TimeUtc],
@FirstSequence = [Sequence]
FROM
[ELMAH_Error]
WHERE
[Application] = @Application
ORDER BY
[TimeUtc] DESC,
[Sequence] DESC

END
ELSE
BEGIN

SET @PageSize = 0

END

-- Now set the row count to the requested page size and get
-- all records below it for the pertaining application.

SET ROWCOUNT @PageSize

SELECT
errorId = [ErrorId],
application = [Application],
host = [Host],
type = [Type],
source = [Source],
message = [Message],
[user] = [User],
statusCode = [StatusCode],
time = CONVERT(VARCHAR(50), [TimeUtc], 126) + 'Z'
FROM
[ELMAH_Error] error
WHERE
[Application] = @Application
AND
[TimeUtc] <= @FirstTimeUTC
AND
[Sequence] <= @FirstSequence
ORDER BY
[TimeUtc] DESC,
[Sequence] DESC
FOR
XML AUTO

GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO

CREATE PROCEDURE [dbo].[ELMAH_LogError]
(
@ErrorId UNIQUEIDENTIFIER,
@Application NVARCHAR(60),
@Host NVARCHAR(30),
@Type NVARCHAR(100),
@Source NVARCHAR(60),
@Message NVARCHAR(500),
@User NVARCHAR(50),
@AllXml NTEXT,
@StatusCode INT,
@TimeUtc DATETIME
)
AS

SET NOCOUNT ON

INSERT
INTO
[ELMAH_Error]
(
[ErrorId],
[Application],
[Host],
[Type],
[Source],
[Message],
[User],
[AllXml],
[StatusCode],
[TimeUtc]
)
VALUES
(
@ErrorId,
@Application,
@Host,
@Type,
@Source,
@Message,
@User,
@AllXml,
@StatusCode,
@TimeUtc
)

GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO