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Oracle Data Dictionary and the Dynamic Performance Views
An important part of an Oracle database is its data dictionary, which is a read-only set of tables that provides administrative metadata about the database.…
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Automatic Diagnostic Repository
The Automatic Diagnostic Repository (ADR) is a system-wide tracing and logging central repository for database diagnostic data. It includes the following items: Background trace files : Background trace files store…
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Trigger and create a simple logon Trigger
Introduction- In order to connect using SSMS or client apps, SQL Server offers Windows and SQL authentication methods. For DBAs, security is always the first…
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Normalization in SQL Server
Introduction- Normalization in SQL Server is a crucial concept in database design that aims to organize data efficiently, reduce redundancy, and maintain data integrity. It…
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OFFSET Command in SQL Server
Introduction- In SQL Server, the OFFSET command is used in conjunction with the ORDER BY clause to specify the number of rows to skip before…
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Extended Events in SQL Server
Introduction- Extended Events (XEvents) is a highly scalable and adaptable event-driven monitoring system that debuted with SQL Server 2008. It is intended to assist database…
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Database corruption
Database corruption Database corruption in Oracle can occur due to various reasons, such as hardware failures, software bugs, or issues during database operations. It’s crucial…
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Correlated Subquery
Introduction- A correlated subquery is a SQL query in which the values of the inner query (subquery) are derived from the outer query. Essentially, the…
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Cloning In Oracle
In the context of Oracle databases, “cloning” typically refers to the process of creating an exact replica of a database, usually for purposes such as…
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Network actual bandwidth between servers.
Iperf: Download the tool from https://iperf.fr/iperf-download.php Keep it on both source and target server. Copy code iperf3 -s On server (server2){Cline machine}, run: Copy code iperf3…
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Install MySQL 8 on Oracle Linux
Installing MySQL on Oracle Linux is simple and straightforward. Download the latest version of MySQL based on your OS version. Download via Command Line (optional):…
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Mysql Replication
MySQL database servers (slave)- I/O thread and SQL Thread- Replication I/O threads- When a start slave statement is issued on a replica server, the replica…
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