How to Remove a Cached SQL Execution Plan in Oracle
A cursor cache is a stored execution plan of a SQL statement in memory. Oracle reuses it to improve performance. However, sometimes…
Category: Database
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Oracle Manual DB Switchover: Primary to Standby with DGMGRL
A switchover in Oracle Data Guard is a planned role reversal between the primary and standby databases, ensuring minimal downtime. This guide…
How to Download and Install Oracle 19c on Oracle Linux 8.10 (x86_64) in VirtualBox VM
Learn how to download and install Oracle 19c on Oracle Linux 8.10 (x86_64) in a VirtualBox VM with this step-by-step guide. This…
How to Install Oracle 19c on Amazon Linux 2 (2025) | Step-by-Step Guide
In this guide, we provide a step-by-step process to install Oracle 19c on Amazon Linux 2 using the GUI-based installer. You’ll learn…
How to Access Your Virtual Machine on VirtualBox Using MobaXterm
If you’re running a Linux-based Virtual Machine (VM) on VirtualBox and want to connect using MobaXterm, you might face network issues. By…
Automate Oracle DBA Login with a Custom Alias on Linux
Managing Oracle databases on an Amazon Linux 2 EC2 instance often requires switching users and setting environment variables before running SQL*Plus. This…
How to Fix “NtCreateFile(\Device\VBoxDrvStub) Failed” Error in VirtualBox 7.1.6 on Windows
Encountering the NtCreateFile(\Device\VBoxDrvStub) failed: 0xc0000034 error while creating a virtual machine in VirtualBox can be frustrating. This issue is commonly related to…
How to Assign a Dedicated Temporary Tablespace to a User in Oracle
In Oracle databases, every user requires a temporary tablespace for sorting and other temporary operations. By default, users are assigned the default…
DBMS_SHARED_POOL.PURGE Not Working? Here’s the Fix
The DBMS_SHARED_POOL.PURGE procedure is commonly used to remove specific cursors from the SQL area, but in many cases, it doesn’t work as…
How to Connect to Oracle Database Using SQL*Plus
SQL*Plus is a command-line tool used to interact with Oracle databases. This guide covers all possible ways to connect using sqlplus, along…
