Oracle8i SQL Reference Release 2 (8.1.6) A76989-01 |
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SQL Statements (continued), 11 of 17
To explicitly recompile either a package specification, body, or both. Explicit recompilation eliminates the need for implicit run-time recompilation and prevents associated run-time compilation errors and performance overhead.
Because all objects in a package are stored as a unit, the ALTER PACKAGE
statement recompiles all package objects together. You cannot use the ALTER PROCEDURE
statement or ALTER FUNCTION
statement to recompile individually a procedure or function that is part of a package.
Note: This statement 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. |
The package must be in your own schema or you must have ALTER ANY PROCEDURE
system privilege.
schema |
is the schema containing the package. If you omit schema, Oracle assumes the package is in your own schema. |
package |
is the name of the package to be recompiled. |
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recompiles the package specification or body. The
If recompiling the package results in compilation errors, Oracle returns an error and the body remains invalid. You can see the associated compiler error messages with the SQL*Plus command |
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recompiles only the package specification, regardless of whether it is invalid. You might want to recompile a package specification to check for compilation errors after modifying the specification. When you recompile a package specification, Oracle invalidates any local objects that depend on the specification, such as procedures that call procedures or functions in the package. The body of a package also depends on its specification. If you subsequently reference one of these dependent objects without first explicitly recompiling it, Oracle recompiles it implicitly at run time. |
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recompiles only the package body regardless of whether it is invalid. You might want to recompile a package body after modifying it. Recompiling a package body does not invalidate objects that depend upon the package specification. When you recompile a package body, Oracle first recompiles the objects on which the body depends, if any of those objects are invalid. If Oracle recompiles the body successfully, the body becomes valid. |
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recompiles both the package specification and the package body if one exists, regardless of whether they are invalid. This is the default. The recompilation of the package specification and body lead to the invalidation and recompilation as described above for For information on how Oracle maintains dependencies among schema objects, including remote objects, see Oracle8i Concepts. |
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instructs the PL/SQL compiler to generate and store the code for use by the PL/SQL debugger. For information on debugging packages, see Oracle8i Supplied PL/SQL Packages Reference. |
This statement explicitly recompiles the specification and body of the ACCOUNTING
package in the schema BLAIR
:
ALTER PACKAGE blair.accounting COMPILE PACKAGE;
If Oracle encounters no compilation errors while recompiling the ACCOUNTING
specification and body, ACCOUNTING
becomes valid. BLAIR
can subsequently call or reference all package objects declared in the specification of ACCOUNTING
without run-time recompilation. If recompiling ACCOUNTING
results in compilation errors, Oracle returns an error and ACCOUNTING
remains invalid.
Oracle also invalidates all objects that depend upon ACCOUNTING
. If you subsequently reference one of these objects without explicitly recompiling it first, Oracle recompiles it implicitly at run time.
To recompile the body of the ACCOUNTING
package in the schema BLAIR
, issue the following statement:
ALTER PACKAGE blair.accounting COMPILE BODY;
If Oracle encounters no compilation errors while recompiling the package body, the body becomes valid. BLAIR
can subsequently call or reference all package objects declared in the specification of ACCOUNTING
without run-time recompilation. If recompiling the body results in compilation errors, Oracle returns an error message and the body remains invalid.
Because this statement recompiles the body and not the specification of ACCOUNTING
, Oracle does not invalidate dependent objects.
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