我觉得最可能的原因就是nicran所说的:)

On 7/31/05, nicran <nicran at gmail.com> wrote:
> another possible reason might be when running script with cron, the
> environment variable isn't correct set by the cron shell, and it might
> use another python such the one installed at /usr/bin
> 
> 在 05-7-30，limodou<limodou at gmail.com> 写道：
> > 在 05-7-30，Schopendauer Nietzsche<mosquitoxh at yahoo.com.cn> 写道：
> > >
> > >
> > > hello  everyone:
> > >
> > > I write a program using  dco2 by python,when i call this program  by
> > > shell
> > >
> > > command,it's ok ,when I call this program by cron ,It errs.error
> > > message
> > >
> > > as  flows:
> > >
> > > Traceback (most recent call last):
> > >   File "/home/logix/batch/sendMail.py", line 14, in ?
> > >     db = DCOracle2.connect("lmusr/future2 at TMSPROD_PROD")
> > >   File "/home/logix/DCOracle2/DCOracle2/DCOracle2.py", line
> > > 189, in
> > > connect
> > >     db = dco2.connect(u, p, dbname)
> > > dco2.DatabaseError: (12154, 'Error while trying to retrieve text for
> > > error ORA-12154')
> >
> > 没有用过oracle，不过感觉是数据库访问错，它已经给出了错误码是"12154"，建议你查一查错误码看一看是什么错误。会不会是程序的执行权限的问题。
> > >
> > > can anyone help me solve this problem?  3ks
> > >
> >
> >
> >
> > --
> > I like python!
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> >
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