SELECT 	* 
FROM 	dba_tab_privs 
WHERE 	OWNER = 'sys' 
AND 	TABLE_NAME = 'TABELA';

SELECT 'grant '||privilege||' on '||owner||'.'||table_name||' to '||grantee||';' 
FROM 	dba_tab_privs 
WHERE	grantee = upper('&1') 
ORDER BY grantee;

SELECT 	privilege, owner, table_name, grantee 
FROM 	dba_tab_privs 
WHERE 	grantee= 'ORWMSSEL'

//CONCEDER
SELECT 'grant ' ||privilege||' on '||owner||'.'||table_name||' to   '||grantee||';'  FROM dba_tab_privs p where p.owner = 'XXX'  ORDER BY grantee;
//REVOGAR
SELECT 'REVOKE '||privilege||' on '||owner||'.'||table_name||' FROM '||grantee||';'  FROM dba_tab_privs p where p.owner = 'XXX'  ORDER BY grantee;