A refcursor bind variable may not be printed more than once without reexecuting the plsql open. If the cursor is moved to a package, you will have the now necessary close already in place. The cursor for loop is an elegant and natural extension of the numeric for loop in pl sql. I was very happy to learn that oracle database 10g will automatically optimize my cursor for loops to perform at speeds comparable to bulk collect. How can i fetch from a ref cursor that is returned from a stored procedure out variable and print the resulting rows to stdout in sqlplus. Ask tom how to test a function returning a ref cursor from. Display refcursor results through sqlplus oracle faq. I call a oracle stored procedure which has an out parameter of type ref cursor.
This example demonstrates how to define and open a ref cursor variable, and then pass it as a procedure parameter. Typically the ref cursor definition and the open for. This example executes a pl sql stored procedure that returns two ref cursor parameters, and reads the values using an oracledatareader. With solutions for toad for oracle, toad for mysql, toad for sql server, db2, sap and more. Sqlplus refcursor bind variables allow sqlplus to fetch and format the results of a select statement contained in a plsql block. When using the data provider to work with oracle ref cursors, you should consider the following behaviors. How do i see the contents of the refcursor if i dont know the no of columns it is returning plsql thanks. This may be a dumb question, but ive never got my head round the strange tablecast.
Plsql cursor by practical examples oracle tutorial. For the call i use a toraclestoredprocedure with type. It will be in production a small list with max 80lines. We use basically a type conversion to take a select statement and turn it into a what would you call it uh. A ref cursor is a datatype that holds a cursor value in the same way that a varchar2 variable will hold a string value. There are two types of cursor variable 1week ref cursor. Refcursor bind variables can also be used to reference plsql cursor variables in stored procedures. The refcursor declared in this programs scope is never opened as when it is assigned to the same refcursors variable in the out parameter, the information of the cursor variable from the server program is copied into this variable, thus making it its alias. This article demonstrates a few simple ways to display the contents of ref cursors. Posted in oracle, pl sql cursor variable ref cursor ref cursors refcursor reference cursor weak and strong ref cursor published by sqlandplsql to learn more about the oracle, sql, pl sql, performance tuning, database modeling, ubuntu, mysql etc.
Returning a ref cursor from a procedure pl sql this example demonstrates how to define and open a ref cursor variable, and then pass it as a procedure parameter. Sqlplus and sqlcl allow you to define variables of type refcursor. Using ref cursor s is one of the most powerful, flexible, and scalable ways to return query results from an oracle database. This example executes a pl sql stored procedure that returns a ref cursor parameter, and reads the value as an oracledatareader. The for is incompatible with the fetch, you cant use both. Normally a cursor is a static thing, it points to a query. Here is the same select statement but stuffed into what is called a cursor expression. Sql server simple use of cursor to print all stored. Oracle toad expert blog for developers, admins and data analysts.
I just received comment from jerry hung who have improved on previously written article of generating text of stored procedure. In this tutorial, i will show you the full steps to export your query output to an excel file using oracle sql developer. Net framework data provider for oracle supports the oracle ref cursor data type. Plsql print out ref cursor returned by a stored procedure. How can i fetch from a ref cursor that is returned from a stored procedure out variable and print the resulting rows to stdout in sql plus. This is why i dont know how to resolve the performance issue, when the print are relatively uncommon in the output. Although this is a simple query my actual query is more dynamic with other parameters for where clause. This variable is then looped for processing the returned result set as shown in. A refcursor bind variable is passed as a parameter to a procedure. But reading this article should tell you all you need to know. Host cd scripts input edit sql buffer add lines to the buffer.
Find answers to printing a cursor from toadsql navigator from the expert. List n m edit sql buffer display buffer lines n to m for all lines specify m as last pause message wait for the user to hit return. For more information on bind variables, see your oracle database pl sql language reference. Suggestions, comments, feedbacks and referrals are highly appreciated. Define a record for your refcursor return type, call it rec. Pl sql composite data type collections associative array, varray and nested tables kafka java producer and consumer. Example 319 using refcursor variables in stored procedures. Print variable list the value of a bind variable or ref cursor see variable show prompt message echo a message to the screen. And if it is local, then including a close statement will also show other developers and your manager that you are paying attention. The requirement is to show the output with incorrect rows.
Moreover you cant close the cursor before returning it or it will be unusable. Retrieving data from multiple ref cursors using an oracledatareader. You would think that returning a jdbc result set from an oracle pl sql stored procedure would be quite straightforward. A ref cursor can have an arbitrary query associated with it. Get the returned ref cursor and navigate the records like this. No options to enable, no widgets to mess with, just hit the execute button and you are good to go. I have a function that returns a refcursor for a given query. How to see refcursor resultoutput in oracle sql developer. I want to print a message at specific line on the prompt screen. Aug 06, 2015 how to test a oracle stored procedure with ref cursor from sql plus or sql developer.
Ask tom how do i see the contents of the refcursor if i d. Heres a stored procedure example in oracle database, using cursor to manipulate or navigate the records. Unfortunately, my company is still running on oracle9i database, so i have started converting my cursor for loops to bulk collects. Returning a jdbc result set from an oracle stored procedure.
A ref cursor can be opened on the server and passed to the client as a unit rather than fetching one row at a time. Java,stored procedure,oracle,stored procedures and java,result set. I have used a ref cursor in my procedure and when i execute that in test mode after click on execute the procedure executes quickly but when i click on cursor output to see the results it is taking very long to produce the output with no results. Printing a cursor from toadsql navigator solutions experts. To reprint the results, the pl sql block must be executed again before using print.
For how many years have you been working with physical servers that are starving your database of the memory necessary to deploy important new performance features such as the result cache, memoptimize pool, inmemory aggregation, inmemory column store, and full database caching. Nov 22, 2008 just a day ago i wrote article about sql server simple use of cursor to print all stored procedures of database. Dec 29, 2015 i have to execute an oracle stored procedure from test complete that returns a refcursor, i tried different ways with parameter object and also using the record set my stored procedure exm create or replace procedure testproc retcur out globalpkg. Cursor expressions as arguments to functions called from sql. If you assign a cursor variable to them, you can use the print command to print the. Strong plsql ref cursors burleson oracle consulting. Sqlplus statements must be interpreted by the sql worksheet before being passed to the database. To view your cursor results you need to loop through your cursor and print values. Plsql print out ref cursor returned by a stored procedure stack.
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