053-450

Which of the following are valid program types for a lightweight job? (Choose all that apply.)
A. PLSQL_BLOCK
B. EXECUTABLE
C. JAVA_STORED_PROCEDURE
D. STORED_PROCEDURE
E. EXTERNAL

　　PLSQL_BLOCK and STORED_PROCEDURE are the only valid program types that can be used with a lightweight job.
Programs
A program object (program) describes what is to be run by the Scheduler. A program
includes:
An action: For example, the name of a stored procedure, the name of an executable found
in the operating system file system (an "external executable"), or the text of a PL/SQL
anonymous block.
A type: STORED_PROCEDURE, PLSQL_BLOCK, or EXTERNAL, where EXTERNAL indicates an
external executable.
Number of arguments: The number of arguments that the stored procedure or external
executable accepts.
A program is a separate entity from a job. A job runs at a certain time or because a certain
event occurred, and invokes a certain program. You can create jobs that point to existing
program objects, which means that different jobs can use the same program and run the
program at different times and with different settings. With the right privileges, different
users can use the same program without having to redefine it. Therefore, you can create
program libraries, where users can select from a list of existing programs.
If a stored procedure or external executable referenced by the program accepts
arguments, you define these arguments in a separate step after creating the program. You
can optionally define a default value for each argument.