Can ref cursor be used for dynamic queries?
Answer: Here is an example script that performs dynamic SQL and returns the data as a ref cursor. The best on site “Oracle training classes” are just a phone call away!
When should we use ref cursor in Oracle?
Using REF CURSOR s is one of the most powerful, flexible, and scalable ways to return query results from an Oracle Database to a client application. A REF CURSOR is a PL/SQL data type whose value is the memory address of a query work area on the database.
What is the advantage of ref cursor in Oracle?
Answer: A ref cursor is a PL/SQL variable, defined as a cursor type, which will point to, or reference a cursor result. The advantage that a ref cursor has over a plain cursor is that is can be passed as a variable to a procedure or a function. The ref cursor can be assigned to other ref cursor variables.
Can ref cursor be used with procedure out parameter?
The Oracle Database adapter provides support for strongly-typed and weakly-typed (SYS_REFCURSOR) REF CURSORs that can be passed to PL/SQL procedures and functions as IN, OUT, or IN OUT parameters.
How do I run a ref cursor in Oracle?
With a cursor variable, you simply pass the reference to that cursor. To declare a cursor variable, you use the REF CURSOR is the data type. PL/SQL has two forms of REF CURSOR typeS: strong typed and weak typed REF CURSOR . The following shows an example of a strong REF CURSOR .
What is the difference between a PL SQL cursor and PL SQL ref 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.
Can we pass cursor as parameter?
No, you can’t pass a static cursor as a parameter.
Do we need to close ref cursor in Oracle?
you close cursors AFTER you use them. Hence you close a ref cursor after you fetch from it. If you lose your result set — that indicates you are not done with the ref cursor. just treat a ref cursor as you would any other cursor, close it after you are finished with it.