Operation question about log

if i set rampolicy to inuse mode,ckpt frequency to 0,log purge to true.whether the log will be auto purged when all connection disconnect from the datastore?
Message was edited by:
knights

ChrisJenkins wrote:
No logging mode (Logging=0) is a 'special use' option and has many, many limitations. For example:
1. Replication is not available
2. XLA and XLA/JMS is not available
3. All locking is at the database level; even queries will acquire an exclusive database leve llock so the database essentially becomes single threaded
4. Transactions are not available so there is no commit or rollback and any errors can leave multi row updates/deletes partially done
5. The only persistence is now via checkpoints; but fuzzy checkpoint is not available so all checkpoints are blocking and will impede application access to the database
{color:#3366ff}Essentially, no logging mode is only intended for bulk data load operatiosn when initially populating your datastore. {color}Hi Chris, I'm facing this case.
During the time of loading cache group from db into data store,I wanted to close log operation when loading then open it after the operation. While I found that, after closing the log( by setting logging=0), I can't run the "load cache" command, which hints me error.
Would you kindly pls. tell the way to disable the log temporarily? Many thanks!
Regards,
Michael
It is not in general usable for any kind of operational running. TimesTen does not support purely in-memory operation. Checkpointing and logging are fundamental mechanims and are required for any real use of TimesTen.
Chris

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    Although I have only about 50 users, at least 15 of them have in excess of 100,000 messages in their accounts and the POA (version 7.0.2) is regularly slowing to a crawl. (I just know that plans for revolution are fomenting!) I have embarked on a campaign to reduce these accounts by archiving everything off to get mail accounts down to 3000 or fewer pieces. I have achieved user buy-in, but have worked on only a few users so far.
    In another closely related thread, it was suggested to me that the PO speed issues relate to broken indexes. And I suspect that given so many messages, the indexes were never getting fully rebuilt with the default QF POA settings. I am trying to fix that situation in addition to reducing mail account sizes. So, I have set up a second POA on another server and dedicated it to the indexing task. The /qfinterval is set for 1 hour, other /qf switches at default. The POA-QF does no mail delivery, but it does do nightly user upkeep.
    The POA-QF seems to be steadily working away and making progress at reducing the number of unindexed messages. However, I have questions about what I am seeing and what more I can do:
    1. Is the progress I am seeing real progress? For example I have a user with over 100,000 messages to be indexed and every time I check the logs, the count drops by about 500 messages per hourly QF cycle. I assume that if I just let it keep running, it will eventually get caught up and fixed. Not only with this user, but with all the others as well. Will my patience (and theirs) be rewarded? Are there any gotchas I need to prepare for?
    2. One user has recently had virtually all of her messages successfully moved to archive. I can see them in the Archive, and do not see them in the online account. However, now over a week later, QF still shows >130,000 items still left to index for that user. The POA-QF is making slow, steady progress reducing that number, but why is this user's QF count still so high? Does it just need more time, or is there something amiss for this user?
    3. I may want to rebuild indexes for single users from scratch. I have seen the TID 3105742 which tells how to do this: Essentially you turn off mail delivery functions, and make some other switch changes to dedicate the POA to indexing for just a single user, and then you let the POA rebuild the indexes. The implication of that scenario is that the POA is now enjoying exclusive access to the user's databases.
    If I want to use my secondary POA-QF to rebuild a user's index from scratch, does the main POA have to be offline and the user out of GWise? That is, Does the QF process require exclusive access in order to rebuild indexes from scratch?
    Thanks for any thoughts or suggestions.
    Peter Smick

    pgsmick wrote:
    > 1. Is the progress I am seeing real progress? For example I have a user with
    > over 100,000 messages to be indexed and every time I check the logs, the count
    > drops by about 500 messages per hourly QF cycle. I assume that if I just let
    > it keep running, it will eventually get caught up and fixed. Not only with
    > this user, but with all the others as well. Will my patience (and theirs) be
    > rewarded? Are there any gotchas I need to prepare for?
    Set this switch for this indexing POA - /qflevel=999 - this will index
    everything in one run. It will take a long time, but with no qflevel switch you
    are indeed only indexing 500 messages at a time, and if the user has that much
    mail, it might never really catch up.
    >
    > 2. One user has recently had virtually all of her messages successfully moved
    > to archive. I can see them in the Archive, and do not see them in the online
    > account. However, now over a week later, QF still shows >130,000 items still
    > left to index for that user. The POA-QF is making slow, steady progress
    > reducing that number, but why is this user's QF count still so high? Does it
    > just need more time, or is there something amiss for this user?
    >
    This is odd, because really the index count should drop to nothing, but with the
    above switch this might get resolved as well.
    > 3. I may want to rebuild indexes for single users from scratch. I have seen
    > the TID 3105742 which tells how to do this: Essentially you turn off mail
    > delivery functions, and make some other switch changes to dedicate the POA to
    > indexing for just a single user, and then you let the POA rebuild the indexes.
    > The implication of that scenario is that the POA is now enjoying exclusive
    > access to the user's databases.
    Not really - the POA is not enjoying exclusive access to the user's database,
    the indexer is just avoiding an attempt to index anything else.
    > If I want to use my secondary POA-QF to rebuild a user's index from scratch,
    > does the main POA have to be offline and the user out of GWise? That is, Does
    > the QF process require exclusive access in order to rebuild indexes from
    > scratch?
    No - QF never requires exclusive access. That said, you may find that an
    extremely vigorous QF can cause slowdowns for the user.
    Danita
    Novell Knowledge Partner
    Moving GroupWise to Linux?
    http://www.caledonia.net/gwmove.html

  • Legality questions about Home Sharing

    I have some legality questions about Apple's Home Sharing technology.
    As I understand it, you can share (that is, copy it from one computer to another) your music, movies, applications and other iTunes-managed files amongst five computers. The only 'trick' is that each computer must have an iTunes Store account and must be logged in in order for it to work.
    My question concerns the copying aspect and the legality of it. For content that was purchased through the iTunes Store I can see how Home Sharing can provide a limitation on content sharing, since all of the machines would need to be connected to Apple's servers in order for the validation process to happen. But what about content that was added to iTunes through other means, e.g., ripping my own CDs or converting my DVDs? These items can still be copied via Home Sharing and as there's no DRM on them there's no way they can be protected against "illegal" or "unauthorized" use.
    It was my understanding that if I gave a copy of a song to someone else, that's illegal. Apple's Home Sharing technology seems to facilitate this action. If I rip a CD or DVD into iTunes and someone copies it out, isn't that making an illegal copy? Can I be held liable for distribution of content?
    And how far does this extend? If I live in a house with four unrelated people, are they legally (?) allowed to copy music and media amongst each another? Is there a perceived or actual difference between using Home Sharing to copy a movie versus, say, using a USB flash drive? And what if one of them moves out? Am I legally obligated to go through that person's hard drive and remove content that they copied from me before they leave the building?
    Does Home Sharing somehow retroactively change the copyright application on a given CD or DVD? Most of my CDs and DVDs contain notices and warnings against distributing copies. Can these warnings now be ignored, or at least amended with "...unless you're using iTunes Home Sharing" at the ends of them?
    I am not trying to stir up a hornet's nest here. I'm only trying to better understand the legal issues surrounding Home Sharing and particularly how they relate to unprotected content. It seems very contradictory that the RIAA and MPAA would be fighting so hard against peer-to-peer services like BitTorrent and Gnutella while apparently allowing peer-to-peer services through iTunes Home Sharing.
    Furthermore, I also understand that the intention of this system was to allow families who are living together to have common access to all of the "household" music, but my issues aren't about this. I envision, for example, a college dorm building where there's several hundred people living together on the same network subnet, and all of them have Home Sharing enabled and everyone is copying thousands and thousands of songs to/from one another. Is this now legal?
    Any insights would be appreciated. Thanks.

    If I rip a CD or DVD into iTunes and someone copies it out, isn't that making an illegal copy?
    RIPping of commercial, encrypted DVDs (most of them) is illegal to begin with. Or rather, breaking the encryption on a DVD is illegal and in order to RIP the DVD, you must break the encryption. SO you have already "broken the law" by having a copy on your computer.
    Most of my CDs and DVDs contain notices and warnings against distributing copies.
    Most of your DVDs have a notice about even simply making a copy, not only distributing copies.
    Much of your post has been cussed and discussed by many, many people (lawyers, corporations, organizations, individuals, etc.) and no one has come (or likely ever will come) to a complete agreement.
    Generally, "sharing" in the same house hold amongst family members seems to be okay. Outside the same household/family is almost always not okay.
    I envision, for example, a college dorm building where there's several hundred people living together on the same network subnet, and all of them have Home Sharing enabled and everyone is copying thousands and thousands of songs to/from one another. Is this now legal?
    No.
    This is exactly what Napster was and why they were sued & shut down.
    I imagine Apple lawyers have done their homework as well as consulted with the labels to discuss these exact issues.
    And it's called "Home Sharing" to indicate that it is not "Dorm Sharing" or "Workplace Sharing", or even simply "Library Sharing"etc. even though it may be possible to use it in other places than the Home.
    Users on other computers need to know your iTunes ID and password to enable it Home Sharing. Likely this is how Apple got the lables to be okay with it.
    Are you gonna give (and get) dozens/hundreds/thousands/any other users your iTunesID & password?
    You can contact Apple Legal here -> http://www.apple.com/legal

  • Question about using multiple iPods on the same PC

    I've read the FAQs on this subject but I still have a couple of questions about multiple users with separate iPods using the same PC.
    I want to use my family's desktop (A new Gateway with Vista, if it matters) for my new iPod Classic, but my father already has an iTunes account on there for his iPod. I know I can create a new user account on the PC and move iTunes to a shared folder so that we can share music, but will this second account be able to purchase music from the iTunes store or am I going to have to switch between Windows User accounts to make purchases and then move new songs into my separate iTunes account via the shared folder? Will it be its own separate iTunes account (separate user name, separate credit card used, etc.) or will it just be a second library that's dependant on the first?
    I want to be able to have my own iTunes account, make my own purchases in it, and maybe occasionally share tv shows or something with my father.
    If this can't be done, would I be better off just creating new playlists for our two iPods from the same library, or creating a second library on my Father's account?
    Also, if I want to access things I've purchased from iTunes on this desktop in iTunes on my notebook, will I be able to?
    I hope that made sense.
    Sorry if these seem like silly questions. This will be my first iPod as I'm really excited about the 160gig and want to know if these things are possible.
    Thanks in advance for any help

    Hi, Wes.
    Congratulations on your new iPod Classic and Welcome to the Apple Discussions.
    For no particular reason, let's answer your last question first ...
    ... if I want to access things I've purchased from iTunes on this desktop in iTunes on my notebook, will I be able to?
    The iTunes Store operates on a one download per purchase policy so you will have to copy the purchases from one computer to the other and make sure that you authorize the laptop to play the songs.
    As to your first question ...
    ... will this second account be able to purchase music from the iTunes store or am I going to have to switch between Windows User accounts to make purchases ...
    Whatever XP User Account you are logged in to doesn't really matter. What's important is which Apple Account you sign in to ... yours or your Dad's or - if you had my Apple ID and password - The Mimico Kid's for that matter. You can sign in to any Apple Account on any XP User Account. Or any computer for that matter.
    Where the XP User Account comes into play is that it will determine where on your computer the purchases are downloaded. Files will be sent to the iTunes Music folder as specified in the iTunes Edit menu > Preferences > Advanced tab > General sub-tab. Default settings will have a different location for each User Account - C:\Documents and Settings\ user name \My Documents\My Music\iTunes - but if you've read this article in the Apple Knowledge Base, you will know you can change the location of the iTunes Music folder in each XP Account to a common location such as C:\Documents and Settings\All Users\Documents\My Music\iTunes.
    Post back if all this hasn't been as clear as mud and you need anything clarified.

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