Oracle XE

Check if JVM is Installed in Oracle

How to Check if JVM is Installed in Oracle

Creating Java source in Oracle gives an ORA error? Check if JVM is installed and valid in the Oracle database, this way.

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Access Control List (ACL) in Oracle 11G

Access Control List or ACL is a security mechanism that defines which users or roles can perform which operations on which data. It is an essential setup in Oracle 11G for running network packages such as UTL_HTTP.

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TNS Protocol Adapter Error

ORA-12560: TNS:protocol adapter error

Sometimes you try to login to your Oracle XE and get a blocker ORA-12560 : TNS:protocol adapter error. Top reason why this error might occur and how to fix it.

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I want to learn Oracle. Where should I begin?

Here is a simple guide to help you learn Oracle as a developer from scratch, on your own. Beginner-friendly Oracle Learning Library courses and free Oracle environments for hands-on practice.

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Unlock Database User in Oracle Express Edition

Unlock User Account in Oracle Express Edition

The default user HR in Oracle 10G Express Edition is locked when you first try to login after database installation. This is apparently due to security reasons, and needs to be unlocked by the administrator. To unlock HR – or any other database user account in Oracle Database XE – follow the simple steps below:

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Oracle Database Express Edition (Oracle XE)

Oracle Database Express Edition, or Oracle XE, is a free, lightweight version of Oracle. If you are a small enterprise with modest database needs or someone looking to learn Oracle on your home computer, Oracle XE is just right for you.

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