Category: SQL Server
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Moving A Table Data Into New Location Within Database
Problem I often getting low disk space alert from one of my data drive. Adding space on the disk was not possible because of hard drive size limitations and barriers at OS max disk space size. So I started looking what can I do for database end and I found there is only one table…
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Azure Azure SQL Database DBA Worries Continued High Availability Installation and Configuration SQL Server
Cloud Witness in Azure
Cloud Witness is a type of Fail-over Cluster quorum witness that uses Microsoft Azure to provide a vote on cluster quorum. There are significant benefits which this approach: Problem with traditional cluster setup Lets consider a typical cluster setup which is shown in below diagram. Here we have file share witness in primary DC and unfortunately…
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Provisioning a SQL Managed Instance Using the Azure Portal
Azure SQL Managed Instance is intelligent, scalable cloud database service. SQL Managed Instance allows existing SQL Server customers to lift and shift their on-premises applications to the cloud with minimal application and database changes. To create a SQL Managed Instance, follow these steps: 1. Log in to https://portal.azure.com using your Azure credentials. 2. In the top search box, type SQL Managed…
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Connect to SQL Managed Instance from an on-premises client computer by using a point-to-site connection
In this section, you will learn how to connect SQL managed instance from an on-premises client computer by using a “point-to-site” connection. Point-to-Site VPN connections are useful when you want to connect to your VNet from a remote location. Prerequisites: Follow below sequence steps by step to connect SQL Managed Instance from an on-premises client machine (wherein will…
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DBCC (Database Console Command) Commands
It’s a common question of DBA interview. I already have faced millions of time. HaHa Ha. DBCC is a series of statements in Transact-SQL programming language to check the physical and logical consistency of SQL Server database. We can divide in 4 major category or type… DBCC command type… 1. Informational DBCC command 2. Validational DBCC command 3. Maintenance…
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CAP Theorem
In theoretical computer science, the CAP theorem, also named Brewer’s theorem after computer scientist Eric Brewer, states that it is impossible for a distributed data store to simultaneously provide more than two out of the following three guarantees: Consistency Every read receives the most recent write or an error. Availability Every request receives a (non-error)…
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Azure Azure SQL Database Azure SQL Database Backup and Recovery Backup Tools for SQL Server DBA Worries Continued DBMS Concepts DBMS Concepts DBMS Concepts High Availability L1 DBA Monitoring My SQL Performance Tuning PostgreSQL Security SQL Scripting SQL Server
Important SQL Server Scripts…
Restore Progress Check… ========================================================================== DECLARE @DBName VARCHAR(64) = ‘ODS’ DECLARE @ErrorLog AS TABLE([LogDate] CHAR(24), [ProcessInfo] VARCHAR(64), [TEXT] VARCHAR(MAX)) INSERT INTO @ErrorLog EXEC master..sp_readerrorlog 0, 1, ‘Recovery of database’, @DBName INSERT INTO @ErrorLog EXEC master..sp_readerrorlog 0, 1, ‘Recovery completed’, @DBName SELECT TOP 1 @DBName AS [DBName] ,[LogDate] ,CASE WHEN…
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Important PS (Power shell) Scripts
$a = get-eventlog -logname system -message *SQL* -newest 1 $a | select-object -property * ————————————————————————————————————- EventID : 7036 MachineName : ABCD Data : {83, 0, 81, 0…} Index : 4281381 Category …
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innodb_change_buffer_max_size
With MySQL 5.6.2, you can set the maximum size of the change buffer as a percentage of the total size of the buffer pool using the innodb change buffer max size configuration option. The default value for innodb change buffer max size is 25. The maximum number of characters is 50. On a MySQL server…
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CPU Components
CPU consists of 6 main components: 1. CU Control unit 2. ALU Arithmetic logic unit 3. Registers 4. Cache 5. Buses 6. Clock All the components work together to allow processing and system control. Control Unit (CU) It fetches, decodes, and executes instructions. It issues control signals that control hardware. It moves data around the…
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Cache Memory
Hey guys, In this blog I am going to explain you about Cache Memory Cache is a small amount of high-speed random-access memory (RAM) built directly within the processor. It is used to temporarily hold data and instructions that the processor is likely to reuse. This allows for faster processing as the processor does not…
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