ORA-01031: insufficient privileges

Hi to all experts,

Whenever I run redo log backup in DB13, i will get the error message as below:

BR0002I BRARCHIVE 6.40 (15)

BR0006I Start of offline redo log processing: adyhdcwk.svd 2008-07-04 14.44.06

BR0280I BRARCHIVE time stamp: 2008-07-04 14.44.06

BR0301E SQL error -1031 at location BrInitOraCreate-2

ORA-01031: insufficient privileges

BR0303E Determination of RDBMS version failed

BR0007I End of offline redo log processing: adyhdcwk.svd 2008-07-04 14.44.06

BR0280I BRARCHIVE time stamp: 2008-07-04 14.44.06

BR0005I BRARCHIVE terminated with errors

Does anyone can help me?

Thanks a lot.

BR,

Nancy