You can use the following techniques to speed up search in the code:

Packages, functions, and procedures:

SELECT --+ORDERED PARALLEL(A)
B.OBJECT_NAME,
A.LINE,
A.SOURCE
FROM SYS.SOURCE$ A,
DBA_OBJECTS B
WHERE UPPER (A.SOURCE)
LIKE '%SEARCH STRING%'
AND B.OWNER = 'OBJ_OWNER'
AND A.OBJ# = B.OBJECT_ID
/

Views:

-- create tmp table
CREATE TABLE VIEW_CONVERT
(
OWNER VARCHAR2(255),
VIEW_NAME VARCHAR2(255),
VIEW_TEXT CLOB
)
NOLOGGING PARALLEL PCTFREE 0
/

-- fill table and convert long column
INSERT --+APPEND
INTO VIEW_CONVERT NOLOGGING
SELECT --+PARALLEL(AA)
OWNER
, VIEW_NAME
, TO_LOB(TEXT)
FROM DBA_VIEWS AA
WHERE AA.OWNER = 'OBJ_OWNER'
/

COMMIT
/

-- search in views
SELECT --+PARALLEL(A)
*
FROM VIEW_CONVERT A
WHERE VIEW_TEXT LIKE '%SEARCH STRING%'
/

Warning: By using PARALLEL keywords you can easily exhaust all the server resources, which could cause problems on a production system, use with caution and on your own risk.