Query takes 14 hours to complete - kindly help

Question

I'm using Oracle9207 32bit on windows server 2003.
I executed the following query and it takes 14 hours to complete. I don't understand why it takes too long, the database is in archivelog mode and it is not running any other queries. I even specified nologging and the parallel option. And before performing the operation I even "alter table move..." the incmsg table.
The incmsg table contains around 70Million rows.
create table "ECI"."outactions_temp" tablespace USERS nologging parallel as select * FROM "ECI"."outactions" WHERE "ECI"."outactions"."incmsgserno" IN (select "ECI"."incmsg"."serno" from "ECI"."incmsg" where "ECI"."incmsg"."applicationserno" = 2 and "ECI"."incmsg"."timestamp" between to_date('01-MAY-2007', 'DD Mon YYYY') and to_date('21-SEP-2007', 'DD Mon YYYY'));
The execution plan is as follows:
SQL> select plan_table_output from table(dbms_xplan.display('PLAN_TABLE',null,'ALL'));
| Id | Operation | Name | Rows | Bytes | Cost | TQ |IN-OUT| PQ Distrib |
| 0 | CREATE TABLE STATEMENT | | 993 | 2050K| 8322 | | | |
| 1 | LOAD AS SELECT | | | | | 30,01 | P->S | QC (RAND) |
| 2 | TABLE ACCESS BY INDEX ROWID | outactions | 1 | 2080 | 3 | 30,01 | PCWC | |
| 3 | NESTED LOOPS | | 993 | 2050K| 8322 | 30,01 | PCWP | |
| 4 | TABLE ACCESS BY INDEX ROWID| incmsg | 993 | 34755 | 5343 | 30,00 | S->P | RND-ROBIN |
| 5 | INDEX RANGE SCAN | IX_INCMSG_TSTAMP | 178K| | 334 | | | |
| 6 | INDEX RANGE SCAN | IX104_1 | 1 | | 2 | 30,01 | PCWP | |
PX Slave SQL Information (identified by operation id):
1 - CREATE TABLE "ECI".:Q630001 TABLESPACE "USERS" NOLOGGING AS SELECT C0,C1,C2,C3,C4,C5,C6,C7 FROM (SELECT
/*+ ORDERED NO_EXPAND USE_NL(A2) INDEX(A2 "IX104_1") */ A2."serno" C0,A2."source" C1,A2."incmsgserno"
C2,A2."strategyserno" C3,A2."testrunserno" C4,A2."timestamp" C5,A2."xml_actions" C6,A2."status" C7 FROM :Q630000
A1,"ECI"."outactions" A2 WHERE A2."incmsgserno"=A1.C1)
23 rows selected.

Answer 1

I executed the query without the create table statement and the following is the explain plan. I'm still reading thru FAQ on how to format the explain plan.
PLAN_TABLE_OUTPUT
| Id | Operation | Name | Rows | Bytes | Cost
| TQ |IN-OUT| PQ Distrib |
| 0 | SELECT STATEMENT | | 993 | 2050K| 832
PLAN_TABLE_OUTPUT
2 | | | |
| 1 | TABLE ACCESS BY INDEX ROWID | outactions | 1 | 2080 |
3 | 33,01 | PCWC | |
| 2 | NESTED LOOPS | | 993 | 2050K| 832
2 | 33,01 | P->S | QC (RAND) |
| 3 | TABLE ACCESS BY INDEX ROWID| incmsg | 993 | 34755 | 534
3 | 33,00 | S->P | RND-ROBIN |
PLAN_TABLE_OUTPUT
| 4 | INDEX RANGE SCAN | IX_INCMSG_TSTAMP | 178K| | 33
4 | | | |
| 5 | INDEX RANGE SCAN | IX104_1 | 1 | |
2 | 33,01 | PCWP | |
PX Slave SQL Information (identified by operation id):
PLAN_TABLE_OUTPUT
2 - SELECT /*+ ORDERED NO_EXPAND USE_NL(A2) INDEX(A2 "IX104_1") */
A1.C0,A1.C1,A1.C2,A2.ROWID,A2."serno",A2."source",A2."incmsgserno"
,A2."strategyserno",A2."testrunserno",A2."time
stamp",A2."xml_actions",A2."status" FROM :Q633000 A1,"ECI"."outact
ions" A2 WHERE A2."incmsgserno"=A1.C1
PLAN_TABLE_OUTPUT
Note: cpu costing is off, PLAN_TABLE' is old version
21 rows selected.
SQL> spool off;