Re: main_loop stuck !

In article <5d9n8i$rf2@cssun.mathcs.emory.edu>, Rick Ward <wardr@gusco.com> writes >Hello everyone, has anyone out there had this problem ??? > >Using: Online 7.13.UC2 >on: Solaris 2.5 > >The situation is as follows: > >Logical log files are almost full - backup is needed. > >(Before you all start chastising me, there are valid(ish) reasons for > this !) > >I have LBU_PRESERVE set to 1, so I have 1 free log left. > >I initiate a log backup with ontape -a and the logs backup nicely. > >So, my system is now ready to thunder on. 2 minutes later a checkpoint >starts, and takes a bit longer than expected. After a couple of minutes, >I look and see that onstat -g wai shows that main_loop is waiting on >cond wait ( log). But my physical log is empty and all my logical >logs files show U-B (ie, backed up). This, unfortunately means my >system is locked up forever, as the cond wait is never released. So: > >1) What is it waiting for ? >2) Can anyone shed any light on this ? >3) Has anyone experienced anything similar themselves ? > Try onstat -g ath - what is else happening. Remember main_loop is not the only thread. Is an ontape thread running i.e. ontape backup is progress? Are any sqlexec threads running? More info is needed. >Cheers for any help, > > >Message issued by Online: > > -- David Williams