Expdp error with query parameter

Question

i am trying to use datapump and using query parameter in there as below...
but when i use the below, its exporting some system "repcat$" tables and
nothing realted to scott.audit table or anything realted to my query where
clause...what am i doing wrong ??
expdp system
DUMPFILE=test.dmp
LOGFILE=test.log
DIRECTORY=DATA_PUMP_DIR
TABLES=SCOTT.AUDIT
QUERY=SCOTT.AUDIT:'"WHERE TRUNC (audit.audit_timestamp)
BETWEEN TO_DATE ('01012008','DDMMYYYY') AND TO_DATE ('13012008','DDMMYYYY')"'
also when i use scott instead of system user i get below error
Export: Release 10.2.0.3.0 - 64bit Production on Wednesday, 22 July, 2009 12:53:45
Copyright (c) 2003, 2005, Oracle. All rights reserved.
Password:
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
ORA-39002: invalid operation
ORA-39070: Unable to open the log file.
ORA-39145: directory object parameter must be specified and non-null

Answer 1

i treid again, but creating a new datapump dir as follows...create or replace dir dpdump as '/backup/dpdump/orcl';
then gave grant read,write on directory dpdump to system
and now why is oracle looking at a differnt location ?? even when i changed the
direcotry ???
$ expdp SYSTEM
DUMPFILE=test.dmp
LOGFILE=test.log
DIRECTORY=DPDUMP
QUERY=SCOTT.AUDIT:'"WHERE TRUNC (audit.audit_timestamp)
BETWEEN TO_DATE ('01012008','DDMMYYYY') AND TO_DATE ('13012008','DDMMYYYY')"'
Export: Release 10.2.0.3.0 - 64bit Production on Wednesday, 22 July, 2009 13:27:18
Copyright (c) 2003, 2005, Oracle. All rights reserved.
Password:
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
ORA-39001: invalid argument value
ORA-39000: bad dump file specification
ORA-31641: unable to create dump file "/oracle/app/oracle/product/10.2.0/admin/orcl/dpdump/expdat.dmp"
ORA-27038: created file already exists
Additional information: 1
$>
Seems little weird but can you:--
1. Drop the dpdump directory.
SQL> drop directory dpdump;
2. recreate it and then grant the permissions.
SQL> create directory dpdump as '/backup/dpdump/orcl';
The folders must exists in the location.
SQL> grant read,write on directory dpdump to system;
3. SELECT directory_name, grantee, privilege
FROM user_tab_privs t, all_directories d
WHERE t.table_name(+)=d.directory_name
ORDER BY 1,2,3;
Anand