When I run a stored procedure called "Refer attachment" this error comes out: "PLS-00905: object RPT.UTL_FILE is invalid." "Refer attachment" runs the code stack on this line: 
file_id UTL_FILE.FILE_TYPE;
Do you know what the UTL_FILE package is, and how I can fix the above problem in Oracle? Do you know how to determine if it is a privilege issue, fix a UTL_FILE privilege issue or reinstall UTL_FILE if not?

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To determine the privilege for SYS.UTL_FILE, run the following SQL statement. But, you must have select privilege on sys.dba_tab_privs view. By default, PUBLIC has EXECUTE privileges granted on the SYS.UTL_FILE package: 
select owner,table_name,grantee,privilege 
from dba_tab_privs where table_name = 'UTL_FILE';
If you need to change permissions on SYS.UTL_FILE, run the following statement: 
grant execute on utl_file to <user or public>;
In order to write to the file system, the Oracle user must have write permissions to the directory that is listed as a value for the UTL_FILE_DIR init.ora parameter.

To reinstall SYS.UTL_FILE run the following scripts: 

$ORACLE_HOME/rdbms/admin/utlfile.sql
$ORACLE_HOME/rdbms/admin/prvtfile.plb
For more information on SYS.UTL_FILE see note 315283.1 on Oracle's Metalink. Also see appendix B in "Oracle Database 10g PL/SQL Programming."

This was first published in July 2006

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