Year: 2025

SQL Server: How to see current transactions or requests

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To check if there are any active transactions in SQL Server, you have several tools at your disposal depending on how deep you want to inspect. ✅ Option:1 See Transactions via sys.dm_tran_active_transactions Value Type 1 Read/write transaction 2 Read-only transaction 3 System transaction 4 Distributed transaction ✅ Option:2 See Transactions by Session (sp_who2 or sys.dm_exec_requests)…

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SQL Server

T-SQL Vs PL/SQL Syntax

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Below is a side-by-side comparison of Oracle PL/SQL and SQL Server T-SQL for someone coming from a PL/SQL background. This will help you quickly understand the syntax and behavior differences. 🔄 PL/SQL vs T-SQL Syntax Comparison Concept / Operation Oracle PL/SQL Syntax SQL Server T-SQL Syntax Anonymous Block BEGIN … END; BEGIN … END (no…

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SQL Server

Check SQL Server edition

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To check whether you are using SQL Server Standard, Enterprise, or another edition, you can use one of the following methods: 1. Using SQL Query (Recommended) Run this SQL query in SQL Server Management Studio (SSMS): Example Output: 2. Using SQL Server Management Studio (SSMS) 3. Using Command Prompt Run this command in Command Prompt…

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SQL Server

Oracle vs MYSQL Architecture differences (For DBAs)

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Here’s a detailed comparison table between Oracle and MySQL architectures, highlighting components, memory structures, process models, transaction behavior, and other key aspects — tailored for an Oracle DBA transitioning to MySQL. 🏗️ Oracle vs MySQL Architecture (Detailed Comparison Table) Component / Area Oracle RDBMS MySQL (with InnoDB) Architecture Type Multi-process architecture (background processes) Single-process, multi-threaded…

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MYSQL

V$INSTANCE of Oracle in MYSQL

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The Oracle view **V$INSTANCE** provides information about the running Oracle database instance — such as instance name, host, version, status, startup time, etc. ✅ MySQL Equivalent of V$INSTANCE There is no single view in MySQL that maps 1:1 to V$INSTANCE, but you can gather the equivalent details using the following queries: Oracle V$INSTANCE Column MySQL…

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MYSQL

Day to day MYSQL DBA operations (Compared with Oracle DBA)

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Here is a mapping of commonly used Oracle dynamic performance views (V$ views) and data dictionary views (DBA_*) to their closest equivalents in MySQL. These are especially useful for Oracle DBAs learning how to inspect system-level information in MySQL. 🔄 Oracle V$ and DBA_ Views vs MySQL INFORMATION_SCHEMA / Performance Schema Oracle View MySQL Equivalent…

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MYSQL

MYSQL and Oracle Comparison for Oracle DBA

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Here’s a practical comparison of MySQL for Oracle DBAs, focusing on key concepts, terminology, architecture, and daily operations so that you can quickly map your Oracle knowledge to MySQL. I’ll structure it in a table format followed by important notes: 🔁 Oracle to MySQL Mapping Table (Essentials for Oracle DBAs) Concept / Task Oracle MySQL…

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MYSQL

MYSQL for Oracle DBA

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Excellent! Since you’re already a seasoned Oracle DBA on Linux, transitioning to MySQL will be straightforward — but you’ll need to shift focus to MySQL’s different architecture, tooling, and storage engine model. 🧠 Training Plan: MySQL DBA for Oracle DBAs (Linux-Based) We’ll cover the following areas step-by-step. Each topic will include theory, practical commands, and…

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MYSQL