Database migration from Tru64 to HPUX on 10g

We'll be migrating off of Tru64 to HP-UX on Oracle 10g. We'll be using data pump to export the Tru64 version and data pump to import into the HP-UX release. All of the documentation that we've found says to do a full export and a full import. Full exports include the SYSTEM schema in addition to the application owner. Our plans are to do the following:
1) perform a full export from the Tru64 server
2) create a new instance on the HP-UX side, that includes creating all of the tablespaces
3) perform a full import into the HP-UX side
Because we have performed a full export, when we do a full import we get warnings about the SYSTEM objects existing. What do we do about the warnings?
What is the best practice for full database imports using data pump?
Are there other considerations we should be aware of?
Thanks in advance.

I remember system schema issues from the old import and export, there is normally no problem from memory .. but i am thinking from memory.
Perhaps worth noting the rowcounts and objects before and after your import just in case anything new has appeared ... i seem to remember some related to sqlplus.
I always think exports are easy ... imports are harder.
Also if your imports are giving you time problems there may be some things that can help speed it up: There are others who could give better advice on this.
See for example here [http://www.dba-oracle.com/t_import_impdp_import_performance_speed.htm] ... i came accross this with a quick google.
Tuning a temporarily large db_cache_size / sga_target / pga_target might be helpful, but if paging is caused this is counter productive.
The parallel option on impdp might be helpful.
The following are complicated and probably should only be tried if you need the speed:
- Temporarily setting larger tables with more than one index to cache before export and changing back afterwards.
- To go really on the knife-edge move your redo logs to a ramdisk temporarily to get a little extra speed , but this is a very very very dangerous practice. (I am nutter who has done this!)

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Dear all,
im currently doing the migration from production server (MID) to dev server (MIT).
i've use 2 method below but all encounted the error and fail to import. hope some one can point the error and explain the some of my problem.
1. used oracle exp and imp
full database.
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full database.
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finish patch the r3load and add the dbs/ora/tnsname = <SID> in the tnsname.
but the error is still the same.
INFO 2009-08-17 18:48:29
Output of C:\usr\sap\MID\SYS\exe\uc\NTI386\R3load.exe -testconnect is written to the logfile R3load.exe.log.
WARNING 2009-08-17 18:48:29
Execution of the command "C:\usr\sap\MID\SYS\exe\uc\NTI386\R3load.exe -testconnect" finished with return code 2. Output:
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sapparam: SAPSYSTEMNAME neither in Profile nor in Commandline
C:\usr\sap\MID\SYS\exe\uc\NTI386\R3load.exe: START OF LOG: 20090817184829
C:\usr\sap\MID\SYS\exe\uc\NTI386\R3load.exe: sccsid @(#) $Id: //bas/700_REL/src/R3ld/R3load/R3ldmain.c#20 $ SAP
C:\usr\sap\MID\SYS\exe\uc\NTI386\R3load.exe: version R7.00/V1.4 [UNICODE]
Compiled Jul 7 2009 08:04:27
C:\usr\sap\MID\SYS\exe\uc\NTI386\R3load.exe -testconnect
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DbSl Trace: Cannot connect: dbs/ora/tnsname in profile missing
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ERROR 2009-08-17 18:48:29
CJS-30023 Process call 'C:\usr\sap\MID\SYS\exe\uc\NTI386\R3load.exe -testconnect' exits with error code 2. For details see log file(s) R3load.exe.log.
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user1983888 wrote:
Hi All,
Our client has implemented a Two Node Oracle 10g R2 RAC on HP-UX v2. The Database is on ASM and on HP EVA 4000 SAN. The database size in around 1.2 TB.
Now the requirement is to migrate the Database and Clusterware files to a New SAN (EVA 6400).
SAN to SAN migration can't be done as the customer didn't get license for such storage migration.
My immediate suggestion was to connect the New SAN and present the LUNs and add the Disks from New SAN and wait for rebalance to complete. Then drop the Old Disks which are on Old SAN. Exact Steps To Migrate ASM Diskgroups To Another SAN Without Downtime. (Doc ID 837308.1).
Clients wants us to suggest alternate solutions as they are worried that presenting LUNs from Old SAN and New SAN at the same time may give some issues and also if re-balance fails then it may affect the database. Also they are not able to estimate the time to re-balance a 1.2 TB database across Disks from 2 different SAN. Downtime window is ony 48 hours.Adding and removing LUNs online is one of the great features of ASM. The Rebalance will be perfomed under SAN. No downtime!!!
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>
One wild suggestion was to:
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