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impdp is not using parallelism (2 merged) [message #405458] Wed, 27 May 2009 22:37 Go to next message
rumman
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Location: Bangladesh
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impdp is not using parallelism:

impdp system/****@a directory=dp_t24 dumpfile=t24_20090523_postcob_%U.dmp schemas='T24' remap_schema='T24:T24TEST' REMAP_TABLESPACE=('GLOBUSDATAXML:GLOBUSTESTDATAXML','GLOBUSINDEXXML:GLOBUSTESTINDEXXML') 


I exported the data using 8 parallism from IBM P5 server with AIX OS which took 6 hours.
Now, I am importing data in RHEL 4 with 8-cores machine. I set parallism 8, 16. But nmon report suggest only one processor is using at a time ( See attachement). It took 18 hours and only 19 percent is done.

Please give some suggestion.
Re: impdp is not using parallelism [message #405460 is a reply to message #405458] Wed, 27 May 2009 22:48 Go to previous messageGo to next message
BlackSwan
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exports are ALWAYS faster than imports
The data pumps utilities are still young & have bugs.
We must deal with reality as it exists & not as we would like it to be.
Re: impdp is not using parallelism [message #405461 is a reply to message #405458] Wed, 27 May 2009 22:49 Go to previous messageGo to next message
Mahesh Rajendran
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Quote:
impdp system/****@a directory=dp_t24 dumpfile=t24_20090523_postcob_%U.dmp schemas='T24' remap_schema='T24:T24TEST' REMAP_TABLESPACE=('GLOBUSDATAXML:GLOBUSTESTDATAXML','GLOBUSINDEXXML:GLOBUSTESTINDEXXML')

In the posted snippet, where have you specified parallelism?
Either you are not telling us the whole story
or
my eyes are deceiving me.
Re: impdp is not using parallelism [message #405462 is a reply to message #405458] Wed, 27 May 2009 22:51 Go to previous messageGo to next message
Mahesh Rajendran
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And which edition of Oracle are you using?
impdp parallelism is supported only in Enterprise Edition.
Re: impdp is not using parallelism [message #405465 is a reply to message #405462] Wed, 27 May 2009 23:22 Go to previous messageGo to next message
rumman
Messages: 48
Registered: June 2007
Location: Bangladesh
Member
I am using version:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bi

And I stopped the job of impdp and then set parallelism 8, then 16.
But no result.

Any help pls.
Re: impdp is not using parallelism [message #405467 is a reply to message #405461] Wed, 27 May 2009 23:26 Go to previous message
BlackSwan
Messages: 25033
Registered: January 2009
Location: SoCal
Senior Member
Mahesh Rajendran wrote on Wed, 27 May 2009 20:49
Quote:
impdp system/****@a directory=dp_t24 dumpfile=t24_20090523_postcob_%U.dmp schemas='T24' remap_schema='T24:T24TEST' REMAP_TABLESPACE=('GLOBUSDATAXML:GLOBUSTESTDATAXML','GLOBUSINDEXXML:GLOBUSTESTINDEXXML')

In the posted snippet, where have you specified parallelism?
Either you are not telling us the whole story
or
my eyes are deceiving me.



rumman,

Please respond.
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