frequent commits

Please fix what i am missing here.

The argument against frequent commits is that oracle needs the
transaction details, which is wiped out by COMMIT, to supports its
multiversioning facility.
But i have read that when oracle goes to rollback segments for getting
the status of a trans id, and if the trans id not present it regards it
as COMMITTED. This belief is what raised my question. ??
If this not true, then what if a block update is committed->
transaction id of the block does not indicate the commit status. and
eventually after some time (read days) the rollback segments (which
contains the status of that transaction id) gets wiped out, Now if i
read that block will it give the 01555 error??

.

Relevant Pages

  • Re: [RFC] JBD ordered mode rewrite
    ... data buffers that need syncing on transaction commit but a list of inodes ... that need writeout during commit. ... the file then that inode would be added to the journal list and the pages ...
    (Linux-Kernel)
  • Re: [RFC] JBD ordered mode rewrite
    ... data buffers that need syncing on transaction commit but a list of inodes ... that need writeout during commit. ... delayed allocation, starting a new transaction could to happen a lot to ...
    (Linux-Kernel)
  • Re: [PATCH 2/2] improve ext3 fsync batching
    ... array than it takes to complete the transaction. ... when commit times go up to seconds? ... Transactions on that busier drive would take longer, we would sleep ... longer which would allow us to batch up more into one transaction. ...
    (Linux-Kernel)
  • Re: Backups and Transaction Log file size
    ... It sounds like a classic case of a long running open transaction. ... Find the client and either commit or roll it back. ... If you know it is a garbage connection you can kill the SPID and it will roll back any changes that the SPID may have open and allow you to backup and truncate properly. ... Once the committed trans have been ...
    (microsoft.public.sqlserver.setup)
  • Re: [RFC] JBD ordered mode rewrite
    ... data buffers that need syncing on transaction commit but a list of inodes ... that need writeout during commit. ... How would you like to assert for inode being freed? ...
    (Linux-Kernel)