Is this the best performed query?

Question

Hi Guys,
Is this the best performed query or i can still improve it ?
I am new to SQL performacne tune, please help to get best performance of the query.
SQL> EXPLAIN PLAN SET STATEMENT_ID = 'ASH'
2 FOR
3 SELECT /*+ FIRST_ROWS(30) */ PSP.PatientNumber, PSP.IntakeID, U.OperationCenterCode OpCenterProcessed,
4 PSP.ServiceCode, PSP.UOMcode, PSP.StartDt, PSP.ProvID, PSP.ExpDt, NVL(PSP.Units, 0) Units,
5 PAS.Descript, PAS.ServiceCatID, PSP.CreatedBy AuthCreatedBy, PSP.CreatedDateTime AuthCreatedDateTime,
6 PSP.AuthorizationID, PSP.ExtracontractReasonCode, PAS.ServiceTypeCode,
7 NVL(PSP.ProvNotToExceedRate, 0) ProvOverrideRate,
8 prov.ShortName ProvShortName, PSP.OverrideReasonCode, PAS.ContractProdClassId
9 ,prov.ProvParentID ProvParentID, prov.ProvTypeCd ProvTypeCd
10 FROM tblPatServProv psp, tblProductsAndSvcs pas, tblProv prov, tblUser u, tblGlMonthlyClose GLMC
11 WHERE GLMC.AUTHORIZATIONID >= 239
12 AND GLMC.AUTHORIZATIONID < 11039696
13 AND PSP.AuthorizationID = GLMC.AUTHORIZATIONID
14 AND PSP.Authorizationid < 11039696
15 AND (PSP.ExpDt >= to_date('01/03/2000','MM/DD/YYYY') OR PSP.ExpDt IS NULL)
16 AND PSP.ServiceCode = PAS.ServiceCode(+)
17 AND prov.ProvID(+) = PSP.ProvID
18* AND U.UserId(+) = PSP.CreatedBy
19 /
Explained.
Elapsed: 00:00:00.46
SQL> SELECT * FROM TABLE(dbms_xplan.display);
Plan hash value: 3602678330
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 8503K| 3073M| 91 (2)| 00:00:02 |
|* 1 | HASH JOIN RIGHT OUTER | | 8503K| 3073M| 91 (2)| 00:00:02 |
| 2 | TABLE ACCESS FULL | TBLPRODUCTSANDSVCS | 4051 | 209K| 16 (0)| 00:00:01 |
| 3 | NESTED LOOPS | | 31 | 6200 | 75 (2)| 00:00:01 |
| 4 | NESTED LOOPS OUTER | | 30 | 5820 | 45 (3)| 00:00:01 |
|* 5 | HASH JOIN RIGHT OUTER | | 30 | 4950 | 15 (7)| 00:00:01 |
| 6 | TABLE ACCESS FULL | TBLUSER | 3444 | 58548 | 12 (0)| 00:00:01 |
|* 7 | TABLE ACCESS FULL | TBLPATSERVPROV | 8301K| 585M| 2 (0)| 00:00:01 |
| 8 | TABLE ACCESS BY INDEX ROWID| TBLPROV | 1 | 29 | 1 (0)| 00:00:01 |
|* 9 | INDEX UNIQUE SCAN | PK_TBLPROV | 1 | | 0 (0)| 00:00:01 |
|* 10 | INDEX UNIQUE SCAN | PK_W_GLMONTHLYCLOSE | 1 | 6 | 1 (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - access("PSP"."SERVICECODE"="PAS"."SERVICECODE"(+))
5 - access("U"."USERID"(+)="PSP"."CREATEDBY")
7 - filter(("PSP"."EXPDT">=TO_DATE('2000-01-03 00:00:00', 'yyyy-mm-dd hh24:mi:ss') OR
"PSP"."EXPDT" IS NULL) AND "PSP"."AUTHORIZATIONID">=239 AND "PSP"."AUTHORIZATIONID"<11039696)
9 - access("PROV"."PROVID"(+)="PSP"."PROVID")
10 - access("PSP"."AUTHORIZATIONID"="GLMC"."AUTHORIZATIONID")
filter("GLMC"."AUTHORIZATIONID">=239 AND "GLMC"."AUTHORIZATIONID"<11039696)
28 rows selected.
Elapsed: 00:00:00.42

Answer 1

Thanks a lot for your reply.
Here are the indexes on those tables.
table --> TBLPATSERVPROV ---> index PK_TBLPATSERVPROV ---> column AUTHORIZATIONID
table --> TBLPRODUCTSANDSVCS ---> index PK_TBLPRODUCTSANDSVCS ---> column SERVICECODE
table --> TBLUSER ---> index PK_TBLUSER ---> column USERID