I have the following problem on a 10.2.0.4 Oracle on AIX 1.6...
I have 2 RAC nodes as the node # 2 goes down, the VIP migrated correctly to the node # 1, but the listener # 1 do not see the change, and just resolve to the local ip.
The same does not apply in the reverse case, when it drops the node N 1, the listener attends to the fallen VIP node and migrated.The configuration is correct and identical in both nodes, according to the documentation, but I can not find a reasonable answer.
IP node # 1. scm1or01 192.68.60.11 scm1or01-VIP 192.68.60.13
IP node # 2 scm1or02 192.168.60.12 scm1or01-VIP 192.168.60.14
Below I write as I detect the problem: when scm1or02 is down:
oracle: 10.2.0.5.7...I can get this to work, but not the way the docs seem to say. I am wondering if I am reading the docs wrong or missing something.
The docs seem to say to get a query to run in parallel using an index you use the PARALLEL_INDEX hint. This doesn't seem to work for me. I have to do one of the following
1. change the parallel degree with an alter index, then use the PARALLEL hint (parallel index hint does nothing in this case) 2. use both the parallel_index and parallel hint
Just a general query on parallel query. My customer having 4 cpus and running the database in 11.2.0.3 in AIX 5.3(One is in AIX 6.1). Under which circumstances, we can propose to user parallel query options.
We have very large table having data more than 1000 millions rows. We divide this table into four physical tables say A, B, C and D. The physical horizontal partition of data of this original table is done based upon their business policy.
Each partitioned table has contained data of particular business entity. Further each table has partition and sub partitions based upon business rule.
We have to retrieve data from all these tables as follows:
select a1, a2, a3, a4, a5, a6 from A where < logical filter condition> union all select b1, b2, b3, b4, b5, b6 [code].....
We observed that above each query block execute in serial one after another and individual each query block capable to process data in parallel from respective table.
How does this above query able to execute each query block in parallel?
I have been told that i should use multiple's of 4 as degree in the parallel hint to get maximum performance, so i am wondering is it true? that i should always use multiples of 4 or i can use any number inside the parallel hint.
If we have not set parallel degree for a table then we can ( try to ) force parallel execution on a table using a parallel hint Does this 'parallelism' works on the index search in the query as well?
In which situations non-parallel non-partitioned table but parallel index (degree>2) will facilitate a query?
I have query in which having some issues with outer join.When I run the inner query, I am getting 121 rows and when i put outer query and run it, I am getting 69 rows coz the code_combination_id does not exist in the outer query table.But even when I say ( + ) , its not giving 121 rows..
select serialnumber from product where productid in (select /*+ full parallel(producttask 16) */productid from producttask where startedtimestamp > to_date('2013-07-04 00:00:00', 'YYYY-MM-DD HH24:MI:SS') and startedtimestamp < to_date('2013-07-05 00:00:00', 'YYYY-MM-DD HH24:MI:SS') and producttasktypeid in
I have a table "tl" which is partitioned--say 30 partition and for each partition there is a seperate view like as follows
create view view_t130 as select * from tl partition (p30); create view view_t129 as select * from t1 partition (p29); . . . create view view_t101 as select * from t1 partition (p01);
my question is how to use hints on this table if your are using view to access the data from internal table.
Normal structure is if i don't wrong:-
index( <<view name|view alia name>> <<table name|table alias name>> name of index)
Consider my case
select * from view_t130 where <index_column> --not picking up index
i want to give expicit index hint.so i used the same structure that i specified above but it didn't work.
select /*+ index( view_t130 t1 <index_name) */ * from view_t130 where <index_name>
how to give explicit index hint..but one constraint is i cannot give any alias names for internal tables because those(view structure) are generated by predefined scripts..so it's not possible to change it.
There's a fairly popular Ordered Hint example on the web as follows:
<CODE> select /*+ ordered use_nl(bonus) parallel(e, 4) */ e.ename, hiredate, b.comm from emp e, bonus b where e.ename = b.ename ; </CODE>
I would like to know what the "parallel(e, 4)" clause does. Where does the "4" come from? What is "parallel" here? I also have another question: If I have 5 tables--T_OREGON, T_UTAH, T_VIRGINIA, T_TEXAS, and T_OKLAHOMA--lined up in a join right behind a FROM, coming in at row counts of
T_OREGON: [a lot of rows; a lot more than T_UTAH] T_UTAH: [smaller than T_OREGON] 40550 rows T_VIRGINIA: 14 rows T_TEXAS: 66 rows T_OKLAHOMA: 8 rows from T_OREGON or, T_UTAH ut, T_VIRGINIA va, T_TEXAS tx, T_OKLAHOMA ok...
my question is, if an Ordered hint can be used here, is it that the smallest table (in this case T_OKLAHOMA) gets placed first in the join and the rest of the table ascension in the join doesn't matter? Or is it that T_OKLAHOMA gets placed first in the join, followed by T_VIRGINIA [at 14 rows], followed by T_TEXAS, T_UTAH, and finally T_OREGON?
suggest on the dependenecy between the database service and the database instance?
srvctl start instance -i db1 will this start service as well for which the above instance is either preferred or available instance? will it start the listener as well?
srvctl stop instance -i db1 will this stop service as well for which the above instance is either preferred or available instance? will it stop the listener as well?
srvctl start service -d db -s dbserve will this start service as well for which the above instance is either preferred or available instance?
srvctl stop servive -d db -s dbserve will this stop service as well for which the above instance is either preferred or available instance?
srvctl start database -d db will it start instance, listener and service as well?
srvctl stop database -d db will it stop instance, listener and service as well?
I have a query which has 5 unions, each clause of the union takes 1 hr to run and query results come back in 5 hrs, Is there any way I can make these clause to run in parallel?
CREATE OR REPLACE PROCEDURE EBILL_BULK_UPDATE_SERVICE(in_cycle VARCHAR2) AS v_cnt NUMBER; -----Variable used for checking table is partitioned or not partitioned CURSOR cur_update -----Cursor defined for Updating EBILL tables for service_id is SELECT table_name , cycle_name FROM NNP_EBILL_UPDATE
[code]....
As our requirement that Execute Immediate should work for 5 or more tables updation parallely at a time.If one table get completed then it should take next table from loop and then start the code till completion of all tables.
On a tab page should be displayed the result of four indifferent queries, each based on a stored procedure.At the moment, the queries are processed serially, by the statements:
I am inserting 50 million records into a table MAIL_LOG. I am using the hint /*+ append parallel (MAIL_LOG, 12) */. But for my table degree is 1.
SELECT table_name, degree FROM user_tables WHERE table_name = 'MAIL_LOG';
I have following clarifications. 1) What degree I should use. 2) On what basis I have to give the degree. 3) Have we use constant degree all the times. 4) How to check my insert statement is using parallel degree. 5) How to find the degree at session level.
i am trying to export table using datapump in oracle 10g, this expdp takes 5 hours time, so i want use use parallel keyword in expdp, my question is how should i know number of parallels can i use...?
We have Data Migration for our application coded in PL/SQL. The DB server has 64 Cores available (Solaris 10 OS) however running the migration code written as a function, utilizes very little CPU and CPU utilization is to max 2%. To utilize CPU power available to increase the speed of migration, we are using DBMS_JOB to schedule this function multiple times.
However scheduling the function 10 times, we are seeing that at any moment only 4/5 oracle processes are active and utilizing the CPU and CPU utilization has gone up to 5-6%. The speed of migration is increased but not to a great extend which I feel would work if we could utilize more CPU.
I see a parameter job_queue_processes is set to 10 currently in the database and am planning to increase this (currently to 25 as I don't have exact count of how many other jobs may be running in the database).
I am trying to execute two scripts at the same time (concurrent) in Oracle SQL Developer. I know we can schedule a job using DBMS_job package and define the job. But is there any other way of doing it using Threads ?
