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Read the message, find the cause, fix it. In this advanced-level lesson, "Common Errors and How to Fix Them", you type real ...

Facing ORA-12154: TNS Could Not Resolve Connect Identifier in Oracle Database? In this video, we'll learn how to troubleshoot ...

An Oracle-to-Snowflake estimate can count tables and SQL while missing the work that decides whether production succeeds.

Keys, relationships and how tables connect. In this intermediate-level lesson, "Why Joins? Keys and Relationships", you type real ...

Are you preparing for an Oracle SQL Developer, PL/SQL Developer, or Oracle Database Developer interview? In this video, we ...

Learn how to implement **File Upload in Oracle APEX** with this step-by-step tutorial. In this video, we will understand how file ...

What actually happens inside an Oracle Database when you INSERT, UPDATE, DELETE, ROLLBACK or execute DDL? Oracle ...

Test TCP ports with PowerShell before deploying a server application, and verify that clients can reach the ports it needs. Create a ...

Welcome to **OSB-62: Reporting in Oracle Service Bus (OSB)**! In this video, we will learn about the **Reporting Action in ...

Oracle Database Creation – Part 1 | Besant Technologies Velachery Welcome to Besant Technologies Velachery! In this ...

As part of Google Summer of Code 2026 with LabLua, I worked on adding prepared statement support to LuaSQL, starting with ...