asked on

Oracle EXPDP - IMPDP

Hi,
Oracle version: 10g
O.S: Windows 2003

I've 2 oracle instance: ORCL1 (schema TOM) on machine1 and ORCL2 (schema SAM) on machine2
I'd like to import the schema TOM into schema SAM.
TOM schema size is 300 GB

I exported TOM with following parfile:

SCHEMAS=TOM
DIRECTORY=TOM_DIR
DUMPFILE=exp_tom_%U.dmp
LOGFILE=exp_tom.log 
filesize=30GB
JOB_NAME=EXP_JOB

Open in new window

and created about 10 dump files in more of 30 hours

Now I need import into schema SAM, but I'd like to import faster

Which parameter can I add at following imp parfile to speed up the import?

schemas=TOM
remap_schema=TOM:SAM
logfile=imp_sam.log
directory=SAM_DIR
DUMPFILE=exp_tom_%U.dmp
exclude=statistics
job_name=IMP_JOB

Open in new window

Thanks in advance!

Guy Hengel [angelIII / a3]

30 hours for 300GB ... sounds like you have much too slow hardware, and I don't think you will be able to import "faster" than you export.
does the expdp write to the same disks as where the database files reside?

ralph_rea

ASKER

yes, but impdp write to the different disks

SOLUTION

David VanZandt

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

ralph_rea

ASKER

my oracle version: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0

in impdp I used FILESIZE parameter. Can I use PARALLEL parameter for expdp speed?

schemas=TOM
remap_schema=TOM:SAM
logfile=imp_sam.log
directory=SAM_DIR
DUMPFILE=exp_tom_%U.dmp
exclude=statistics
job_name=IMP_JOB
PARALLEL=4

David VanZandt

certainly, and good catch :)

ASKER CERTIFIED SOLUTION

Guy Hengel [angelIII / a3]

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

Geert G

what is your SGA set to in the init.ora file ?
select name, value, display_value from v$parameter
where name in ('sga_max_size', 'sga_target');

how much physical memory do you have on your server ?

if your sga_size is very close or bigger than your physical memory then your server will be paging all the time >> slow performance