Question

I want to make an incremetal script for my oracle database.
I want to modify only one procedure signature and it’s body and the rest should remain the same.

How can I accomplish this without recreating the hole package with create or replace?

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Example

Old package

PROCEDURE LOAD_ITEMS(OUTCURSOR OUT SYS_REFCURSOR);

New package

PROCEDURE LOAD_ITEMS(P_ID IN CHAR, OUTCURSOR OUT SYS_REFCURSOR);

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Edit:
By incremental script, I mean upgrade script from previous version to this one.
And I want to modify only the current procedure, NOT ALL OF THEM.

Answer 1

If you want to change a procedure in the package specification, then you need to
CREATE OR REPLACE
the whole package specification and body with the changed code.

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While the ALTER PACKAGE statement can be used to recompile the whole package, it

[…] does not change the declaration or definition of an existing package. To redeclare or redefine a package, use the CREATE PACKAGE or the CREATE PACKAGE BODY statement with the OR REPLACE clause.