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You can name a cursor so that it could be referred to in a program to fetch and process the rows returned by the SQL statement, one at a time.

There are two types of cursors − Implicit cursors are automatically created by Oracle whenever an SQL statement is executed, when there is no explicit cursor for the statement.

In PL/SQL, you can refer to the most recent implicit cursor as the SQL cursor, which always has attributes such as %FOUND, %ISOPEN, %NOTFOUND, and %ROWCOUNT.

The SQL cursor has additional attributes, %BULK_ROWCOUNT and %BULK_EXCEPTIONS, designed for use with the FORALL statement.

In 11g R1, and above, it is a powerful addition to the set of available tools. NATIVE); c Ret Val := dbms_sql.execute(c SQL_Cur); cur_var := CREATE OR REPLACE PROCEDURE forall_errors AUTHID CURRENT_USER IS TYPE myarray IS TABLE OF tmp_target%ROWTYPE; l_data myarray; CURSOR c IS SELECT table_name, num_rows FROM all_tables; errors PLS_INTEGER; array_dml EXCEPTIONS; PRAGMA EXCEPTION_INIT(dml_errors, -24381); BEGIN OPEN c; LOOP FETCH c BULK COLLECT INTO l_data LIMIT 100; TYPE myarray IS TABLE OF test%ROWTYPE; l_data myarray; CURSOR c IS SELECT sub_date, cust_account_id, carrier_id, ticket_id, upd_date FROM stage FOR UPDATE SKIP LOCKED; errors PLS_INTEGER; cai test.cust_account_id%TYPE; cid test.carrier_id%TYPE; ecode NUMBER; iud stage.upd_date%TYPE; sd test.sub_date%TYPE; tid test.ticket_id%TYPE; upd test.upd_date%TYPE; BEGIN OPEN c; LOOP FETCH c BULK COLLECT INTO l_data LIMIT 50000; FORALL i IN 1..l_data.

Oracle generously provides a list of things developers can do to tune their PL/SQL code.

One item from that list is probably the single best tool developers have at their disposal to supercharge their code: bulk processing.

All procedural code is handled by the PL/SQL engine while all SQL is handled by the SQL statement executor, or SQL engine.

There is an overhead associated with each context switch between the two engines.

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