Sessions are in blocked state

Hi Gurus,
we are inserting data into one table and using append and parallel hints...but that query is not completed yet and those sessions are in blocked list.
can you please let me know how to overcome this issue and below is the query:
INSERT /*+ APPEND PARALLEL(emp 8) */ INTO emp_temp
(empno,empname,dateofjoining,deptno,sal)
SELECT /*+ PARALLEL(empn 8) */
empno,empname,dateofjoining,deptno,sum(sal) sal
FROM emp_V;
is it correct usage or anyother best way for improving performance.

Thanks for the response.
Below is the issue details more detailed:
We have created table with parallel degree 8 and I am not able to insert data into that table and the sessions are blocked state.
I am seeing event names in blocked state are px deq: parse reply px deq: execution msg
Temp_table -- parallel degree8
I am selecting the data from multiple tables as per my requirement and trying to insert that data into the temp table.
Below is the query:
Insert into /*+PARALLEL(Temp_table)*/ Temp_table(report_date,quantity,revenue)
select /*+PARALLEL(Temp_table_v)*/ report_date,quantity,revenue from Temp_table_v;
In Temp_table_v we are joined the multiple tables and those tables are having millions of records and in that view also we have added parallel hints.
Please help.

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Hi,
Since it was a migration from oracle 8i to oracle 9i, your performance is suppose to increase rather than decrease given condition that hardware and oracle configuration does not change.
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sid blocking_session event
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/* QSMQ VALIDATION */ ALTER SUMMARY "XXXXX"."Gxxx_CP_CAL_TIME_TEMP_MV" COMPILE
/* QSMQ VALIDATION */ ALTER SUMMARY "XXXXX"."Gxxx_CP_CAL_TIME_MV" COMPILEThese to me look like programmed 'ALTER SUMMARY' commands (the comment in front of the statement seems to indicate so). It's the application that's doing this right?
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Thanks for the response.
Below is the issue details more detailed:
We have created table with parallel degree 8 and I am not able to insert data into that table and the sessions are blocked state.
I am seeing event names in blocked state are px deq: parse reply px deq: execution msg
Temp_table -- parallel degree8
I am selecting the data from multiple tables as per my requirement and trying to insert that data into the temp table.
Below is the query:
Insert into /*+PARALLEL(Temp_table)*/ Temp_table(report_date,quantity,revenue)
select /*+PARALLEL(Temp_table_v)*/ report_date,quantity,revenue from Temp_table_v;
In Temp_table_v we are joined the multiple tables and those tables are having millions of records and in that view also we have added parallel hints.
Please help.

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>
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Session Idel
Hi,
Version 10204.
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Hi,
Does someone can help on this issue ?
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Best Regards

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Am a student, and the request does not appear to be in my book anywhere... Nothing on put_line, or block statements that I can see..
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Hi,
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Sessions are in blocked state

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