Packages themselves are never directly invoked or executed. Instead, the constructs contained within the package are invoked. For example, procedures and functions within the package are executed. Other constructs in the package, such as constants and other declared constructs, can be referenced from within other PL/SQL programs, in the same manner that those program units […]
The statements used to create, alter, and drop packages are rather straightforward. However, this process is a little more involved than merely creating a procedure or function. The first point to understand is that a package consists of two parts: the package specification and the package body. The two parts are created separately. Any package […]
A PL/SQL package is a single program unit that contains one or more procedures and/or functions, as well as various other PL/SQL constructs such as cursors, variables, constants, and exceptions. Packages bring these various constructs together in a single program unit.Most applications include several Procedural Language/Structured Query Language (PL/SQL) procedures and functions that are logically […]
In an exception handler, you can use the built-in functions SQLCODE and SQLERRM to find out which error occurred and to get the associated error message. 1. For internal exceptions, SQLCODE returns the number of the Oracle error. The number that SQLCODE returns is negative unless the Oracle error is no data found, in which […]
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