Oracle External Table SELECT FROM problem from workstation

Question

At Solaris Oracle database server console.
Created directory on the Solaris server as Oracle owner.
As SYS created oracle directory object on that Solaris directory
Granted read/write to SCHEMA_OWNER on that oracle directory object.
Using OS Oracle user, moved a tab-delimited flat file into the Solaris directory.
Logged on a SCHEMA_OWNER using SQLPLUS on the Solaris database server.
Ran external table script in SQLPLUS.
External table was created.
Ran Select * from ext_table.
Appropriate dataset returned.
So at the Oracle Solaris server console,
the create external table script worked without errors,
and a select from statement on the external table worked without errors.
Move to developer workstation:
Logged on as SCHEMA_OWNER using SQLPLUS on Windows workstation.
TNSNAMES of course points to the Solaris database server.
Ran the external table script in SQLPLUS.
External table was created.
Ran Select * from ext_table.
This failed with these errors:
ORA29913 error executing ODCIEXTTABLEOPEN callout
ORA29400 data cartridge error
cant open logfile.log
OS permission denied
ORA06512 sys.oracle_loader line 19
So how can I select from external tables from a windows workstation?
Any guidance on this problem would be appreciated.

Answer 1

Thank you for your response.
I am not creating the external table on the workstation.
In both cases,
from the Solaris console
and from the Windows workstation
the external table is being created on the Solaris file system
in an Oracle Directory object
running an SQL script from SQLPLUS prompt.
The external table creator, schema owner, has read and write permissions
granted by SYS on the oracle directory object.
The problem is:
Logged in as the schema owner,
you can select * from ext_table from the Solaris console SQLPLUS,
but you can not select * from ext_table from the Windows workstation SQLPLUS.
You can DROP TABLE ext_table from the Windows workstation SQLPLUS.
You just cannot select * from ext_table from the Windows workstation SQLPLUS.
I guess as a test,
I can drop from the ext_table creation script the references
to discardfile, badfile, and logfile,
and remove this other file objects from the equation...
which appears to be a file permissions problem.