Oracle SQL: List Stored Procedure Parameters

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-- get a list of arguments for specifed stored procedure
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SELECT
	argument_name, 
	in_out, 
	data_type 
FROM
	all_arguments 
WHERE
	owner = 'SYS' --the owner of the procedure
	AND package_name = 'DBMS_OUTPUT' --the name of the package / null if not part of package
	AND object_name = 'GET_LINE' --the name of the procedure