Confusing impdp and expdp stuff

Hello, I am kinda new to Oracle in general.
Building a test environment.
Want to move a production schema to a test RAC db i have built.
I read up and decided that expdp would be the best method ( correct me if i am wrong please )
I am on oracle linux.
Now I have expdp'ed a schme succesfully but when impdping on the other system i am getting a total of 735 errors.
I have created the same exact user and am using the following command
Please let me know whether I am missing a step here.
$>impdp system/<password> directory=impdp_dir dumpfile=UNIXDATA.DMP logfile=impdpUNIXdata.log fromuser='unixdata' touser='unixdata' commit=Y ignore=Y
would the log file help?
one of them
Processing object type SCHEMA_EXPORT/JOB
ORA-39083: Object type JOB failed to create with error:
ORA-00001: unique constraint (SYS.I_JOB_JOB) violated
also this
ORA-39083: Object type MATERIALIZED_VIEW failed to create with error:
ORA-31625: Schema UNIXDATA is needed to import this object, but is unaccessible
ORA-01435: user does not exist
THANKS ALOT FOR YOUR HELP!
Ali
Edited by: user10270464 on Apr 16, 2010 5:40 AM

Hi,
You don't say what version of Oracle you are using so trying to help without that info is more difficult. It also looks like you are using some old exp parameters and some new expdp parameters. Your mixed command is:
impdp system/<password> directory=impdp_dir dumpfile=UNIXDATA.DMP logfile=impdpUNIXdata.log fromuser='unixdata' touser='unixdata' commit=Y ignore=Y
You said that you did a schema mode export, so I would change the impdp command to be:
impdp system/<password> directory=impdp_dir dumpfile=UNIXDATA.DMP logfile=impdpUNIXdata.log table_exists_action=append
The parameters I changed were:
fromuser='unixdata' -- if the only thing in the dumpfile is what you want, then you don't need fromuser
touser='unixdata' -- since you are importing into the same schema, you don't need touser
commit=y -- no such equivalent in datapump
ignore=y -- the same as table_exists_action=append
Now for your errors.
The first one is not familiar with me, but I have seen the second error, but can't remember the details. Having the version that you are running may help job my memory.
Dean

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to every one
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Copyright (c) 2003, 2005, Oracle. All rights reserved.
Password:
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