Anyone have any ideas as to why the system is telling me that PARCUR is already open Everything was working fine until I added the outer most cursor dupcur and. B25329_01/doc/appdev.102/b25108/img/xe_plsql_commands.gif' alt='Oracle Plsql Open Cursor For Update Of' title='Oracle Plsql Open Cursor For Update Of' />PLSQL Cursor. Summary in this tutorial, we will introduce you to PLSQL cursor. You will learn step by step how to use a cursor to loop through a set of rows and process each row individually. Introducing to PLSQL Cursor. When you work with Oracle database, you work with a complete set of rows returned from an SELECT statement. However the application in some cases cannot work effectively with the entire result set, therefore, the database server needs to provide a mechanism for the application to work with one row or a subset of the result set at a time. As the result, Oracle created PLSQL cursor to provide these extensions. A PLSQL cursor is a pointer that points to the result set of an SQL query against database tables. Working with PLSQL Cursor. The following picture describes steps that you need to follow when you work with a PLSQL cursor PLSQL Cursor. Lets examine each step in greater detail. Declaring PLSQL Cursor. Declare cursor cur is select idnum, txtnum, idlang, txtlang, txttrans from numbersen join. Creating a REST web service with PLSQL and making pretty URLs for your Apex apps. Oracle Plsql Open Cursor For Update Of' title='Oracle Plsql Open Cursor For Update Of' />To use PLSQL cursor, first you must declare it in the declaration section of PLSQL block or in a package as follows. CURSOR cursorname parameter1, parameter2. RETURN returnspecification. IS sqlselectstatements. FOR UPDATE OF columnlist CURSORcursornameparameter1,parameter2. RETURNreturnspecificationFORUPDATEOFcolumnlist First, you declare the name of the cursor cursornameafter the CURSOR keyword. The name of the cursor can have up to 3. PLSQL. It is important to note that cursors name is not a variable so you cannot use it as a variable such as assigning it to other cursor or using it in an expression. The  parameter. 1,parameter. These parameters allow you to pass arguments into the cursor. The RETURN returnspecification is also an optional part. Second, you specify a valid SQL statement that returns a result set where the cursor points to. Third, you can indicate a list of columns that you want to update after the FOR UPDATE OF. Oracle Plsql Open Cursor For Update Of' title='Oracle Plsql Open Cursor For Update Of' />This part is optional so you can omit it in the CURSOR declaration. Here is an example of declaring a cursor. CURSOR curchief. INNER JOIN departments d ON d. INNERJOINdepartmentsd. ONd. manageride. We retrieved data from employees and departments tables using the SELECTwith the INNER JOIN clause and set the curchief cursor to this result set. Opening a PLSQL Cursor. After declaring a cursor, you can open it by using the following syntax. OPEN cursorname argument1, argument2. OPENcursornameargument1,argument2. You have to specify the cursors name cursornameafter the keyword OPEN. If the cursor was defined with a parameter list, you need to pass corresponding arguments to the cursor. When you OPEN the cursor, PLSQL executes the SELECT statement and identifies the active result set. Notice that the OPENaction does not actually retrieve records from the database. It happens in the FETCHstep. If the cursor was declared with the FOR UPDATE clause, PLSQL locks all the records in the result set. We can open the curchiefcursor as follows Fetching Records from PLSQL Cursor. Once the cursor is open, you can fetch data from the cursor into a record that has the same structure as the cursor. Instead of fetching data into a record, you can also fetch data from the cursor to a list of variables. Charlie Chan At The Wax Museum Download Music. The fetch action retrieves data and fills the record or the variable list. You can manipulate this data in memory. You can fetch the data until there is no record found in active result set. The syntax of FETCHis as follows. FETCH cursorname INTO record or variables. FETCHcursorname. INTOrecordorvariables. You can test the cursors attribute FOUND or NOTFOUND to check if the fetch against the cursor is succeeded. The cursor has more  attributes that we will cover in the next section. We can use PLSQL LOOP statement together with the FETCHto loop through all records in active result set as follows. FETCH curchief INTO rchief. EXIT WHEN curchiefNOTFOUND. DBMSOUTPUT. PUTLINErchief. END LOOP     fetch information from cursor into record    FETCHcurchief. INTOrchief    EXITWHENcurchiefNOTFOUND     print department chief    DBMSOUTPUT. PUTLINErchief. Closing PLSQL Cursor. You should always close the cursor when it is no longer used. Otherwise, you will have a memory leak in your program, which is not expected. To close a cursor, you use CLOSEstatement as follows And here is an example of closing the curchief cursor A complete PLSQL Cursor Example. The following is a complete example of cursor for printing a list of chief and name of departments as follows. SET SERVEROUTPUT ON SIZE 1. CURSOR curchief IS. SELECT firstname. FROM employees e. INNER JOIN departments d ON d. ROWTYPE. OPEN curchief. FETCH curchief INTO rchief. EXIT WHEN curchiefNOTFOUND. DBMSOUTPUT. PUTLINErchief. CLOSE curchief. SETSERVEROUTPUTONSIZE1. INNERJOINdepartmentsd. ONd. manageride. ROWTYPE     fetch information from cursor into record    FETCHcurchief. INTOrchief    EXITWHENcurchiefNOTFOUND     print department chief    DBMSOUTPUT. PUTLINErchief. PLSQL Cursor Attributes. These are the main attributes of a PLSQL cursor and their descriptions. Attribute. DescriptioncursornameFOUNDreturns TRUEif record was fetched successfully by cursor cursornamecursornameNOTFOUNDreturns TRUEif record was not fetched successfully by cursor cursornamecursornameROWCOUNTreturns the number of records fetched from the cursor cursornameat the time we test ROWCOUNT attributecursornameISOPENreturns TRUEif the cursor cursornameis open. In this tutorial, youve learned how to use PLSQL Cursor to loop through a set of rows with all necessary steps that need to be done including DECLARE, OPEN, FETCH and CLOSE.