we are using netbackup 6.0 MP3 on Solaris 9.0 along with STK L500 library
IBM LTO3 FC drives ...

What is observed is although taper alert flag is set as "CLEAN_PERIODIC"
in the bptm log; the drive is not automatically cleaned

We already have a compatible cleaning cartridge defined in the media manager
and have set cleaning frequency to zero as required by tape alert ..

If we clean the drive manually with the same cartridge then the cleaning
happens successfully ...

How to get it cleaned automatically with tape alert ..

We are already at latest MP level ...

any clues ..