Author Archives: Jugal Shah

About Jugal Shah

Jugal Shah has 19 plus years of experience in leading and managing the data and analytics practices. He has done the significant work in databases, analytics and generative AI projects. You can check his profile on http://sqldbpool.com/certificationawards/ URL.

How to find database restore history from MSDB?

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MSDB database is used by SQL Server Agent for scheduling alerts and jobs and by other features such as Service Broker and Database Mail. Again SQL Server is using MSDB for storing the history of backup, restore, log-shipping details and more…

You can query the MSDB as below to get the details about the SQL Server restore history.

SELECT TOP 10 *
FROM restorehistory WITH (nolock)WHERE (destination_database_name = 'Database Name')ORDER BY restore_date DESC
All Databases

SELECT TOP 10 * FROM restorehistory WITH (nolock)ORDER BY restore_date DESC

How to improve communication skills & Support Service

As DBA comes under the support industry, it is extremely important for DBAs to improve communication skills. As we are working production servers and backend, it is extremely important for us to communicate properly.

Please take care of the below points to improve your written communication skill.
When you reply all, make sure to move names from TO to CC and CC to TO list according to whom you are writing emails

Be concise and to the point. Use simple English.
Avoid the use of slang words/abbreviations
Use proper spelling, grammar & punctuation
Do not write in CAPITALS. CAPITALS indicate that we are shouting.
Numbers should be expressed as words when the number is less than 10 or is used to start a sentence (example: Ten years ago, my brother and I…). The number 10, or anything greater than 10, should be expressed as a figure (example: My brother has 13 Matchbox cars.)
You should just mention the name instead of Hi Jugal.As we are working as support team, use `We` instead of `I`. For example; Jugal instead of Hi Jugal
You should change the text in the Subject line during reply emails if it is not relevant.
If you are asking for something in the email, you should ask them first and then mention why you need that.

Don’t write open ended email to user
If you are not sure for any support request, please ask end user for more inputs on particular request.
Inform your team regarding any conversation with client through chat or voice call
Update your work log every day
If you are not sure for any resolution steps, discuss it with your team and then provide it to client
When sending large attachments, always “zip” or compress them before sending.
Always include subject in your mail body.
Don’t send email to any account using your client account
Discuss as much as possible with your client
Grab as much as possible knowledge of the client process/environment

Save Water, Save Life and Save the Workl

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Poster_lrg_Save-Water-save-

How to improve TempDB performance?

How to improve TempDB performance?

1) TempDB file size and physical placement on harddrive can affect the performance of a system

2) Set the tempdb recovery model to simple

3) Do the capacity planning of the TempDB database and pre allocate the appropriate size to MDF files, which will improve performance for allocating size

4) Put TempDB on fast I/O System

5) Create as many tempdb data files by considering the number of cpu

6) make all the tempdb data file size same

Troubleshoot Suspect Database Issue

Problem

How to troubleshoot suspect database problem? How to bring it back online? What are the do you need to perform once the database is online?

Solution

Step 1: Bring the database online using below script

USE Master

GO

— Determine the original database status

SELECT [Name], DBID, Status

FROM master.dbo.sysdatabases

GO

— Enable system changes

sp_configure ‘allow updates’,1

GO

RECONFIGURE WITH OVERRIDE

GO

— Update the database status

UPDATE master.dbo.sysdatabases

SET Status = 24

WHERE [Name] = ‘SuspectedDatabaseName’

GO

— Disable system changes

sp_configure ‘allow updates’,0

GO

RECONFIGURE WITH OVERRIDE

GO

— Determine the final database status

SELECT [Name], DBID, Status

FROM master.dbo.sysdatabases

GO

Step 2: Check for database corruption. This is very important step please execute it.

DBCC CHECKDB – Validate the overall database integrity
DBCC CHECKCATALOG – Validate the system catalog integrity
DBCC CHECKTABLE – Validate the integrity for a single table

Step 3: To resolve the corruption issue, please execute below commands

Drop and Recreate Index(es)
Move the recoverable data from an existing table to a new table
Update statistics
DBCC UPDATEUSAGE
sp_recompile

Step 4: Repeat Step 2 to validate all the corruption occurred