How to Resolve ORA-01033: ORACLE Initialization or Shutdown in Progress
Learn how to resolve the ORA-01033 error in Oracle. A step-by-step guide to troubleshoot and fix initialization or shutdown-in-progress issues.
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How to Kill a Specific Connection in Oracle Database
Learn how to identify and terminate specific user sessions in Oracle. Use ALTER SYSTEM commands to safely disconnect or kill unwanted connections.
How to List Active and Open Connections in Oracle
Learn how to identify active user sessions and open connections in Oracle. Use this SQL query to monitor user activity before performing database operations.
How to Retrieve Table Space Name for a Specific User or Table in Oracle
Learn how to retrieve the table space name for a specific user or table in Oracle databases using simple SQL queries.
How to Retrieve Constraints and Their Attributes in Oracle Database
Learn how to retrieve constraints and their attributes in Oracle 11g. Find primary keys, foreign keys, reference tables, and more using SQL queries.
Retrieve the Total Row Count for Each Table in an Oracle Schema
Learn how to retrieve total row counts for all tables in an Oracle schema. Use efficient SQL queries and DBMS_XMLGEN for accurate results.
The 16 Essential SQL Commands and Their Uses
Explore the 16 essential SQL commands categorized by DML, DDL, DCL, and TCL. Learn how SQL simplifies data management and improves productivity.
Understanding Users and Schemas in Oracle Databases: Key Concepts
Learn the relationship between users and schemas in Oracle databases. Discover how they interact and manage database objects effectively.
SQL Developer
SQL Developer is a tool for connecting to an Oracle database (or, in fact, some non-Oracle databases too) and issuing ad hoc SQL commands.
With over 18 years of experience in software architecture, Java technologies, and leadership, I specialize in crafting scalable, future-proof solutions for global organizations. Whether it’s transforming legacy systems, building cutting-edge cloud-native applications, or mentoring teams to excel, I’m committed to delivering value-driven results.