What is the ref cursor?

A REF CURSOR is a PL/SQL data type whose value is the memory address of a query work area on the database. In essence, a REF CURSOR is a pointer or a handle to a result set on the database. REF CURSOR s are represented through the OracleRefCursor ODP.NET class.

What is strong ref cursor?

A ref cursor which has fixed return type is called a Strong Ref Cursor in Oracle Database. Because of fixed return type, strong ref cursors can only be used selectively. For instance with those SELECT statements that return the result whose datatype matches with the one that you have fixed during cursor’s declaration.

What is Oracle cursor?

To execute a multi-row query, Oracle opens an unnamed work area that stores processing information. A cursor lets you name the work area, access the information, and process the rows individually. For more information, see “Querying Data with PL/SQL”.

What is difference between ref cursor and cursor?

A cursor is really any SQL statement that runs DML (select, insert, update, delete) on your database. A ref cursor is a pointer to a result set. This is normally used to open a query on the database server, then leave it up to the client to fetch the result it needs.

How to use REF CURSOR example?

Given that block of code – you see perhaps the most “salient” difference – no matter how many times you run that block – cursor C will always be select

Another difference is a ref cursor can be returned to a client.

Another difference is a cursor can be global – a ref cursor cannot (you cannot define them OUTSIDE of a procedure/function).

How to use record to loop a REF CURSOR?

Returning REF CURSORs from PL/SQL : Functions,Procedures and Implicit Statement Results

Complex Recordsets

Dynamic SQL Enhancements in Oracle 11g

Implicit Statement Results in Oracle Database 12c Release 1 (12.1)

What is REF CURSOR in PL/SQL?

A REF CURSOR refers to a memory address on the database.

A REF CURSOR involves an additional database round-trip. While the REF CURSOR is returned to the client,the actual data is not returned until the client opens the REF CURSOR

A REF CURSOR is not updatable.

A REF CURSOR is not backward scrollable.

A REF CURSOR is a PL/SQL data type.

How to view REF CURSOR results in Toad?

Test Ref Cursor TOAD Step 1. Step 2. Click right most icon of the opened window as shown below. Test ref cursor from TOAD step 2. Step 3. Choose the last radio button “Load into grid from memory (strong and weak)” Test ref cursor from TOAD step 3. Click OK. Click OK. Now you can see the ref cursor results in another window as shown below