Queries on oracle hang after index creation

Question

Hi,
I have a problem where queries issued on an oracle database hang after I create indexes on some of the tables used by these queries.
I have a script where I drop indexes :
DROP INDEX EVP_PCON00_CDSITC_IX;
DROP INDEX EVP_PCS202_STIMP1_IX;
DROP INDEX EVP_PECT00_ONAECT_IX;
DROP INDEX EVP_PVAL01_ONAVAL_IX;
After this script I load data into those tables.
Then I launch another script where I recreate the indexes I just dropped :
CREATE INDEX EVP_PCON00_CDSITC_IX  ON EVP_PCON00(CDSITC) TABLESPACE TS_ODS_INDEX;
COMMIT;
CREATE INDEX EVP_PCS202_STIMP1_IX  ON EVP_PCS202(STIMP1) TABLESPACE TS_ODS_INDEX;
COMMIT;
CREATE INDEX EVP_PVAL01_CDORIV_IX  ON EVP_PVAL01(CDORIV) TABLESPACE TS_ODS_INDEX;
COMMIT;
When the script ends, I try to execute a query using some of the tables I created indexes on :
SELECT ...
FROM ....
WHERE ....
The query never return a result set, it just hangs, I look at the session browser in toad and the scan of the first table used in the query hangs.
When I drop those indexes and re execute the query everything works fine.
Thanks
Edited by: 946359 on Jul 13, 2012 9:20 AM

Answer 1

This is the result I get :
Execution Plan
Plan hash value: 1198043594
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 1343 | 12 (17)| 00:00:01 |
| 1 | HASH UNIQUE | | 1 | 1343 | 12 (17)| 00:00:01 |
|* 2 | HASH JOIN OUTER | | 1 | 1343 | 11 (10)| 00:00:01 |
| 3 | NESTED LOOPS OUTER | | 1 | 1257 | 9 (12)| 00:00:01 |
| 4 | NESTED LOOPS OUTER | | 1 | 1033 | 8 (13)| 00:00:01 |
| 5 | NESTED LOOPS OUTER | | 1 | 809 | 7 (15)| 00:00:01 |
|* 6 | HASH JOIN | | 1 | 585 | 6 (17)| 00:00:01 |
| 7 | NESTED LOOPS | | | | | |
| 8 | NESTED LOOPS | | 1 | 490 | 3 (0)| 00:00:01 |
| 9 | TABLE ACCESS FULL | EVP_PTIP00 | 1 | 452 | 2 (0)| 00:00:01 |
|* 10 | INDEX RANGE SCAN | EVP_PTIC00_CDROLE_IX | 1 | | 1 (0)| 00:00:01 |
|* 11 | TABLE ACCESS BY INDEX ROWID| EVP_PTIC00 | 1 | 38 | 1 (0)| 00:00:01 |
| 12 | TABLE ACCESS FULL | EVP_PTIF00 | 1 | 95 | 2 (0)| 00:00:01 |
|* 13 | TABLE ACCESS BY INDEX ROWID | EVP_PTAB00 | 1 | 224 | 1 (0)| 00:00:01 |
|* 14 | INDEX RANGE SCAN | EVP_PTAB00_CLTABL_IX | 1 | | 1 (0)| 00:00:01 |
|* 15 | TABLE ACCESS BY INDEX ROWID | EVP_PTAB00 | 1 | 224 | 1 (0)| 00:00:01 |
|* 16 | INDEX RANGE SCAN | EVP_PTAB00_CLTABL_IX | 1 | | 1 (0)| 00:00:01 |
|* 17 | TABLE ACCESS BY INDEX ROWID | EVP_PTAB00 | 1 | 224 | 1 (0)| 00:00:01 |
|* 18 | INDEX RANGE SCAN | EVP_PTAB00_CLTABL_IX | 1 | | 1 (0)| 00:00:01 |
| 19 | TABLE ACCESS FULL | EVP_PRIB00 | 1 | 86 | 2 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - access("EVP_PRIB00"."NOTIER"(+)="EVP_PTIP00"."NOTIER")
6 - access("EVP_PTIF00"."NOTIER"="EVP_PTIP00"."NOTIER")
10 - access("EVP_PTIC00"."CDROLE"='EMP')
11 - filter("EVP_PTIC00"."CDDDRX"='CL' AND "EVP_PTIP00"."NOTIER"="EVP_PTIC00"."NOTIER")
13 - filter("EVP_PTAB00_SITF"."CDTABL"(+)="EVP_PTIP00"."CDSITF")
14 - access("EVP_PTAB00_SITF"."CLTABL"(+)='SITF')
15 - filter("EVP_PTAB00_TITR"."CDTABL"(+)="EVP_PTIP00"."CDTITR")
16 - access("EVP_PTAB00_TITR"."CLTABL"(+)='TITR')
17 - filter("EVP_PTAB00_RMAT"."CDTABL"(+)="EVP_PTIP00"."CDRMAT")
18 - access("EVP_PTAB00_RMAT"."CLTABL"(+)='RMAT')