Audit trail file

Hi,

In my BW system, in a random way, from sqlplus I get the messages below:

sqlplus "/as sysdba"

SQL*Plus: Release 9.2.0.8.0 - Production on Tue Mar 18 11:35:31 2008

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

ERROR:

ORA-09925: Unable to create audit trail file

HPUX-ia64 Error: 13: Permission denied

Additional information: 9925

ORA-01075: you are currently logged on

Enter user-name:

Then, I try again and I can enter without problems:

sqlplus "/as sysdba"

SQL*Plus: Release 9.2.0.8.0 - Production on Tue Mar 18 11:36:25 2008

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

Connected to:

Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64bit Production

With the Partitioning option

JServer Release 9.2.0.8.0 - Production

Similar situations occur when the database is doing the backup or when it's booting.

Somebody can help me?

Thanks