RHR,
not sure what your after. Does your command not work or are you after further info.
The export utility allows you to export data in into one of 3 supported file types: IXF,DEL or WSF. You can change many of the defaults by using the MODIFIED by parameter.
eg the default character deleimiter is the double quote. To change this specify the CHARDEL file type modifier. To use an * as the character delimiter use the following
EXPORT ...MODIFIED BY CHARDEL*.
If it's that the command isn't working for you then I would add the following
From your command of
db2 export to /export/home/user/logtables of ixf select * from log_table_name
it looks as though your output is attempting to go to a file called logtables, is this a file or a directory. Would it not be more appropriate to do the following
db2 export to /export/home/user/logtables/logback.ixf of ixf select * from log_table_name
Cheers
Greg