SQL statement tuning

-- Hi all,
Can someone shed some light on how to tune this sql statement? Oracle version 10.2 

SELECT T143.C1,C490021100,C1000000001,C200000020
FROM aradmin.T143
WHERE (((T143.C200000020 LIKE ('Eagle' || '%')) AND (0 = 0)) OR ('Eagle' = ' ')); 

Execution Plan
----------------------------------------------------------
Plan hash value: 1317490582
------------------------------------------------------------------------
| Id  | Operation                   | Name             | Rows  | Bytes |
------------------------------------------------------------------------
|   0 | SELECT STATEMENT            |                  |  7375 |   388K|
|   1 |  TABLE ACCESS BY INDEX ROWID| T143             |  7375 |   388K|
|*  2 |   INDEX RANGE SCAN          | I143_200000020_1 |  7624 |       |
------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
  2 - access("T143"."C200000020" LIKE 'Eagle%')
      filter("T143"."C200000020" LIKE 'Eagle%')

From the trace:

SELECT T143.C1,C490021100,C1000000001,C200000020
FROM aradmin.T143
WHERE (((T143.C200000020 LIKE (:"SYS_B_0" || :"SYS_B_1")) AND (:"SYS_B_2" = :"SY 
S_B_3")) OR (:"SYS_B_4" = :"SYS_B_5"))
call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.00 0.00 0 0 0 0 Execute 1 0.00 0.00 0 0 0 0 Fetch 2 12.10 42.49 126166 130472 0 1 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 4 12.10 42.49 126166 130472 0 1 
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 51

Rows     Row Source Operation
-------  ---------------------------------------------------
     1  TABLE ACCESS FULL T143 (cr=130472 pr=126166 pw=0 time=129302 us)

Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited ---------------------------------------- Waited ---------- ------------ SQL*Net message to client 2 0.00 0.00 db file sequential read 824 0.03 1.10 db file scattered read 8641 0.06 33.40 SQL*Net message from client 2 0.00 0.00 

There are 3.1 million rows for this table, the "Eagle" = " " is used in 
workflow for a specific function on a remedy application. If I take out the 'OR'(I figure it's 
always not true), the query runs in milliseconds, the execution plan is the same . The problem is 
that we can't take the 'OR' out. How can I solve this?

TIA

Robin





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