Variable must be declared error in a stored procedure - sql

Question

I have a package whose body consists of a stored procedure.
The stored procedure makes a call to a stored procedure in another package. However I need to pass the result of a select statement as a parameter. so I stored the result in a variable and passed it as a parameter. However when the procedure call is performed, it says, the variable is not declared.
This is the sample code.
create or replace
PACKAGE BODY PKG_BODY
PROCEDURE PROC (error OUT VARCHAR2,
RESULT OUT BOOLEAN ) AS
-----------------------------
-----------------------------
DECLARE
PARAM TABLE1.COLUMN1%TYPE;
BEGIN
SELECT COLUMN1
INTO PARAM
FROM TABLE1
WHERE COLUMN2=ID AND COLUMN3='NAME';
END;
PUBLISH_MSG.PUBLISH_PMM_MSG('ID',PARAM,PO_ERR_MSG); --another procedure call
END PROC;
I am getting the following error :
PLS:00201 'Identifier PARAM must be declaed'
Do I have to declare the PARAM before somewhere else? Please help !!

Answer 1

You have defined that variable in a nested PL/SQL block - it can't be accessed from an outer block (it doesn't even exist after the block is finished). You should move definition of your param variable to the outer block, for example:
PROCEDURE PROC (error OUT VARCHAR2,
RESULT OUT BOOLEAN )
AS
PARAM TABLE1.COLUMN1%TYPE;
BEGIN
-----------------------------
-----------------------------
SELECT COLUMN1
INTO PARAM
FROM TABLE1
WHERE COLUMN2=ID AND COLUMN3='NAME';
PUBLISH_MSG.PUBLISH_PMM_MSG('ID',PARAM,PO_ERR_MSG); --another procedure call
END PROC;