SQL & PL/SQL :: ORA-12805 - Parallel Query Server Died Unexpectedly?
May 24, 2010ORA-12805: parallel query server died unexpectedly
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Get A Query To Run In Parallel Using Index
Jun 21, 2012oracle: 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
Parallel Query Option
Oct 23, 2013Just 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.
View 2 Replies View RelatedParallel Query Block Of Union All Set
Sep 24, 2010We 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?
SQL & PL/SQL :: Query Regarding Parallel Hint Degree?
Jan 3, 2012I 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.
View 4 Replies View RelatedRAC & Failsafe :: Query Doesn't Have Any Parallel Hints
Jul 10, 2013Below query doesn't have any parallel hints. Though, it is without where clause, so full scan is must but why "PX Deq Credit: send blkd" occurred?
SELECT ROWID, REGION, STATE, CITY, DEALERNAME, DEALERCODE, DEALERID, BUSINESSUNIT, GARDEALERID, MASTERCLAIMNUMBER, CLAIMNUMBER, COMPANY, POLICYNUMBER, STARTDATE, ENDDATE, POLICYISSUEDEALERNAME, ISSUEDEALERCODE, CUSTOMERNAME, CUSTOMERADDRESS, ACCIDENTDATE, ACCIDENTTIME, INTIMATIONDATE, INTIMATIONTIME, REGISTRATIONDATE, REGISTRATIONTIME, DRIVERNAME, ACCIDENT_DESCRIPTION, INTIMATION_DELAY_REASON, INTIMATORNAME, INTIMATORMOBILENO, CLAIM_INTIMATED_BY, TOWING_ASSISTANCE, ACCIDENTPLACE, ACCIDENTLOCATION, GARAGENAME, WORKSHOPADDRESS, WORKSHOPMOBILENO, MANUFACTURINGYEAR, CHASSISNUMBER, ENGINENUMBER, REGISTRATIONNUMBER, VEHICLEMODEL, BUSINESSTYPE, TOTALSI, CLAIMEDAMOUNT, ESTIMATEDAMOUNT, "LABOUR(E)", "PARTS(E)", "PAINTING(E)", EXCESS,
[code]....
understand about "PX Deq Credit: send blkd"..
SQL & PL/SQL :: ORA-12827 / Insufficient Parallel Query Slaves Available
Nov 25, 2010We are facing the below error in our Production environment.
ORA-12827: insufficient parallel query slaves available
Parallel Query ORA-01002 - Fetch Out Of Sequence
Feb 16, 2013While executing parallel query we are getting the below errors.
(SQLState = HY010) - java.sql.SQLException: [tibcosoftwareinc][Oracle JDBC Driver][Oracle]ORA-01002: fetch out of sequence"
(SQLState = HY000) - java.sql.SQLException: [tibcosoftwareinc][Oracle JDBC Driver][Oracle]ORA-12842: Cursor invalidated during parallel execution
Database Version: Release 11.2.0.1.0 (Non-RAC)
SQL Query:
SELECT /*+ PARALLEL 4 */
DISTINCT
AI.STORE_ID STORE_ID, AI.DUE_DATE DUE_DATE, AI.INSTRUCTION_ID INSTRUCTION_ID,
DECODE (ASR.ADT_INSTR_KEY, NULL, 'F', ASR.ADT_INSTR_KEY, 'S') QCCHECK
FROM NSOAPP.DA_INSTRUCTION_INFO AI,
[code]....
Performance Tuning :: Parallel Index With Non-partitioned No-parallel Table?
Apr 30, 2012If 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?
Real Application Clusters :: Global Cache Service Process Died After Resolving Deadlock?
Sep 30, 2013what could be the reason for a LMSn process not heartbeating after a global enqueue service deadlock was detected? The happened in a 3instance RAC and after the LMS1 process stop heartbeating oe of the instances crashed afterwards and another instance crashed some minutes after. reason for the process crash after resolving deadlock?
View 5 Replies View RelatedPerformance Tuning :: Select Query Taking Time Even After Using Parallel Hint?
Sep 25, 2013 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
[code]....
Explain plan output:
Plan hash value: 2779236890
-----------------------------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name| Rows| Bytes | Cost (%CPU)| Time| Pstart| Pstop |
-----------------------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT || 1 | 29 | 9633M (8)|999:59:59 |||
|* 1 | FILTER |||| ||||
| 2 | PARTITION RANGE ALL || 738M| 19G| 6321K (1)| 21:04:17 | 1 | 6821 |
[code]....
Predicate Information (identified by operation id):
---------------------------------------------------
1 - filter( EXISTS (<not feasible>)
4 - filter("PRODUCTID"=:B1)
5 - filter(ROWNUM<100)
12 - access("MODELID"=:B1)
[code]....
Note: - SQL profile "SYS_SQLPROF_014153616b850002" used for this statement
Performance Tuning :: Does Parallel Hint In Query Can Create Bottleneck / Slowdown / Crash Database
Oct 20, 2011does parallel hint in query can create bottleneck/Slowdown/crash database..??
View 4 Replies View RelatedORA-ROWSCN Changing Unexpectedly?
Oct 27, 2012I am struggling with the ORA_ROWSCN pseudocolumn. (Oracle version is 11g). I am aware that without ROWDEPENDANCIES set on the tables, the SCN of a row is in reality that of the block in which the row is resides. The problem I am seeing goes something like this:
1) A datapump import creates a large table (400M+ rows) at 11 am in the morning
2) No subsequent changes are made to this table (at least that I know of)
3) Despite no changes being made the ORA_ROWSCN of almost all the rows changes every few minutes. (a few rows remain with SCN's indicating the original time of import, but the rest change)
I detect this behavior by running this query:
SELECT ora_rowscn, SCN_TO_TIMESTAMP(ora_rowscn),COUNT(*)
FROM test_table GROUP BY ora_rowscn
This ran around 5.15 am on 10/27 and resulted in:
72353518 27-OCT-12 05.17.21.000000000 AM 492009391
67515248 26-OCT-2 11.01.45.000000000 AM 370
Note that almost all rows have a very recent SCN. Only a tiny portion of the rows (370) have an SCN consistent with when the import completed. If I rerun the query a bit later, the SCN of the large rowcount will have advanced again.Block size on the database is 8192.
Server Utilities :: Parallel Slaves On Import
Dec 23, 2011I read somewhere that Quote:PARALLEL just gives the number of parallel slaves that work on your import, so you can use it as far as you have enough io bandwith and cpu power, just try it as this is test system.
can you explain what is parallel slaves/threads here and also what is and how to determine io bandwith ?
Root Causes For Temporary Tablespace To Grow Unexpectedly
Jun 12, 2012db :oracle 9.2.0.5
os :solaris
how to find the root causes for temporary table space to grow unexpetedly and how to claim that grown space back automatically after the transaction over.
RMAN :: Backup Due To Channel Terminated Unexpectedly
Jul 8, 2012The RMAN backup is failing daily due the below issue..
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on t1 channel at 07/08/2012 02:10:38
RMAN-10038: database session for channel t1 terminated unexpectedly
database version : 10.2.0.4.0
RMAN Script :
run {
allocate channel t1 type 'sbt_tape'
parms 'ENV=(TDPO_OPTFILE=/u001/app/TDP/p0137x/tdpo.opt)'
format '%d_inc0_%U.rbck';
backup incremental level 0 database tag OPEN_INC0_DAY;
release channel t1;
}
Server Administration :: Are Parallel Queries Supported In Oracle XE
Nov 18, 2010I'm not sure is parallel query supported in xe ?
View 2 Replies View RelatedClient Tools :: ISQLPlus Stopped Working Unexpectedly
Mar 20, 2011I'm having some trouble with iSQL*Plus.I instaled oracle database and at first it worked fine, but then I installed client on the same maschine and all products that come with client, and somewhere in the meantime iSQL*Plus stopped working.
Then I uninstalled client and products that go with him (Policy Manager, Oracle Wallet...) because I thought that they have "broken" iSQL*Plus, but it still doesn't work. Finally, I re-installed iSQL*Plus, but that didn't work either. Interesting thing is that when I type in command line
" c:/miljana/bin/isqlplusctl start "
it says that iSQLPlus is started, but when I go to browser there is an error:
" Firefox can't establish a connection to the server at miljana.localhost.com:5560. "
Also from Administrative tools/Services if a try to start iSQL*Plus there is an error:
" Could not start the OracleOraDb10g_home1iSQL*Plus service on Local Computer.
Error 1067: The process terminated unexpectedly. "
I know that there is a lot of topics for this, but most of solutions where for Linux, and didn't work for me.I'm using Oracle 10g Enterprise Edition on WindowsXP
Server Utilities :: Increasing Parallel Process In Impdp In Runtime?
Apr 15, 2012I started datapump not using parallel option
I issued the following command
impdp t24/t24 directory=dp_dump dumpfile=bef_cob_%U.dmp schemas=t24
The total dumpfile size is 200 GB..
Now I want to add parallel process to the job..
Backup & Recovery :: Database Session For Channel Sbt_4 Terminated Unexpectedly
Feb 23, 2012Backup for database has been working fine until today.
Today, about 1/3 of the way through the backup (large database), I got this...
RMAN-12005: error during channel cleanup
RMAN-10038: database session for channel sbt_4 terminated unexpectedly
...and the backup died.
Never seen before and the research I've done online has been less than useful. This database is an SAP/oracle db with brtools 7.20 (22) and is using the new parameter in its init.sap file, called "_rman_chan_failo = yes", to address disagreement between brtools and oracle about channel drops being ok if all datafiles backed up.
Nothing in the alert log at the time of this error.
SQL & PL/SQL :: Union Run In Parallel
Sep 30, 2010I 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?
View 13 Replies View RelatedSQL & PL/SQL :: How To Run Procedure In Parallel
Dec 28, 2012we have many tables in Cursor For Loop :
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.
Process Queries Parallel?
Feb 2, 2005On 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:
GO_BLOCK('one');
CLEAR_BLOCK(No_Validate);
EXECUTE_QUERY;
GO_BLOCK('two');
CLEAR_BLOCK(No_Validate);
EXECUTE_QUERY;
Is there a way to processes the queries parallel ?
SQL & PL/SQL :: Parallel Execution Of A Procedure?
Jul 22, 2010Is it possible to run a single procedure in parallel. (Not looking for multifple, using DBMS_JOB)
I am using Oracle 9i.
SQL & PL/SQL :: Partition Truncation Parallel?
Dec 15, 2011I have to truncate two partitions from the same table parallelly at a time.
ALTER TABLE tablename TRUNCATE PARTITION partitioname1;
ALTER TABLE tablename TRUNCATE PARTITION partitioname2;
Huge data is present in each partition.is this possible, means it does not lock table for another alter truncate partition statement?
SQL & PL/SQL :: How To Find Degree For Parallel DML
Feb 12, 2013I 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.
Parallel Keyword In Expdp
Dec 17, 2012i 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...?
PL/SQL :: How To Run DBMS_JOB In Parallel And Serial
Jul 26, 2012I have total 8 procedure to run in parallel . and after that my 9th procedure should run.
below is my job submission procedure
create or replace procedure DURATION_ALARM_WEEKLY as
l_job number ;
begin
dbms_job.submit(l_job,'begin ALARMS_WEEKLY_CALL_OUT ; end;');
dbms_job.submit(l_job,'begin ALARMS_WEEKLY_CALL_IN ; end;');
dbms_job.submit(l_job,'begin ALARMS_WEEKLY_DURATIN_OUT ; end;');
[code].......
what is the syntax I have to do in my FINALE procedure . using DBMS_ALERT.REGISTER , DBMS_ALERT.WAITANY .....?
Starting A Function In Parallel Using DBMS_JOB
Jun 30, 2011We 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).
Running Parallel / Concurrent Scripts?
Feb 24, 2011I 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 ?
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