Why does SQL Developer not show tables?

Why does SQL Developer not show tables?

The answer is simple – you can’t see any tables, because you don’t OWN any tables. In this case EMPLOYEES in your SCHEMA – the collection of objects own by your Oracle user account – points to a TABLE in HR called EMPLOYEES. In the screenshot above, when you open a SYNONYM you can get all the details.

How do I open an Oracle database after installing?

Do one of the following:

1. On Windows: Click Start, point to Programs (or All Programs), point to Oracle Database 11g Express Edition, and then select Start Database.
2. On Linux with Gnome: In the Applications menu, point to Oracle Database 11g Express Edition, and then select Start Database.

What is a schema in Oracle?

A schema is a collection of database objects. A schema is owned by a database user and has the same name as that user. Schema objects are logical structures created by users. You can create and manipulate schema objects with SQL or with Oracle Enterprise Manager.

How can I see connections in SQL Developer?

The first way you can add any SQL Developer tab (Connections, SQL History, Debugger or Dbms Output). To do this, click on the View menu bar and then Connections. The Connections tab will be visible default on the left .

Why are my Oracle database names not showing?

The issue in my case (Windows 7 – 64 bit – Enterprise ) was that the Oracle installer pointed the Start menu shortcut to the wrong version of SQL Developer. There appear to be three SQL Developer instances that accompany the installer. One is in %ORACLE_HOME%\\client_1\\sqldeveloper\\ and two are in %ORACLE_HOME%\\client_1\\sqldeveloper\\bin\\ .

Why are there no tables in Oracle SQL?

The answer is simple – you can’t see any tables, because you don’t OWN any tables. I hate to be the bearer of bad news, but you don’t have any tables. What you mostly likely DO have are SYNONYMS that point to tables in an application schema.

When to use the not exists operator in Oracle?

The NOT EXISTS operator returns true if the subquery returns no row. Otherwise, it returns false. Note that the NOT EXISTS operator returns false if the subquery returns any rows with a NULL value. To archive the customers who have no order, you use the following statement:

How can I See my tables in Oracle SQL Developer?

The user’s tables can be viewed in SQL PLUS by that user and by sys. They can be selected, DML’d, interacted with by the application and basically everything you’d expect because they are actually there and not phantom tables. The user’s tables can be viewed by SYS in SQL Developer through the Other Users dropdown.