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Losing records VERY WORRYING

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  • DaveM
    replied
    Re: Losing records VERY WORRYING

    ALL significant applications (that includes supporting API) have bugs, multiple bugs.
    -
    Noted and Agreed!!

    Leave a comment:

  • pk9
    replied
    Re: Losing records VERY WORRYING

    Just a though. Note that USB version 2 based NAS do not have CRC checking while all hard drives do. USB3 does have it. CRC check for integrity. it is not recommended that critical data be stored on USB v2 devices. A sata or sas/ide controllers have crc, but USB2 does not. It may be OK to loose a few bits if you play some songs but its a hole other thing with critical data. Also keeping sets structure simple is a good adage along with my favorite absolute adage -ALL significant applications (that includes supporting API) have bugs, multiple bugs.
    -

    Leave a comment:

  • DaveM
    replied
    Re: Losing records VERY WORRYING

    Any machine that can be accessed, even as peer to peer is usable. Using a nas may have problems with indexing.
    I have data on a peer to peer in many dealerships where the server is a Linux and unusable for alpha without other tools they don't want and in some cases there is also a shadow on the same machine.
    Maybe this is not ideal, but no data losses or index issues.

    Leave a comment:

  • Tim Sutherland
    replied
    Re: Losing records VERY WORRYING

    Originally posted by Dennis Mathias View Post
    Do you feel that eliminates the danger associated with indexing and so forth? What is it about NAS resources that affects reliability and what can you do about it? I don't think IS is going to let me pop a PC on the network for everyone to access.
    I can't give you technical reasons why but I can also confirm that I had reliability issues using a NAS when I first put my app into production. Once I moved it to a server, all the issues disappeared.

    Do you have an existing server on your network? All you need is a shared directory on it that holds your data. You do not need a dedicated machine.

    Leave a comment:

  • Dennis Mathias
    replied
    Re: Losing records VERY WORRYING

    Do you feel that eliminates the danger associated with indexing and so forth? What is it about NAS resources that affects reliability and what can you do about it? I don't think IS is going to let me pop a PC on the network for everyone to access.

    Leave a comment:

  • Tom Cone Jr
    replied
    Re: Losing records VERY WORRYING

    As mentioned above, I no longer allow my customers to use network attached storage devices to act as server for my Alpha Five desktop applications. I put them on PC's or Servers, only.

    Leave a comment:

  • Dennis Mathias
    replied
    Re: Losing records VERY WORRYING

    I should clarify. The data is on the network resource. Runtimes are on the various desktop PCs.

    Leave a comment:

  • Dennis Mathias
    replied
    Re: Losing records VERY WORRYING

    What type of host is the alpha files residing on, a NAS, full server, or a PC?

    Oh, it's sitting on a network resource.

    Leave a comment:

  • johngtatp
    replied
    Re: Losing records VERY WORRYING

    Dennis,
    What type of host is the alpha files residing on, a NAS, full server, or a PC?

    Leave a comment:

  • Tom Cone Jr
    replied
    Re: Losing records VERY WORRYING

    FWIW I've had mixed results using a NAS to host an alpha five desktop application. Problems of the type you describe went away when we switched over to a regular PC or server. I've surmised that some NAS devices may be optimized for writes, but not reads.

    Leave a comment:

  • Dennis Mathias
    replied
    Re: Losing records VERY WORRYING

    Same bucket here. I nightly rebuild indexes and backup in that order.

    Leave a comment:

  • johngtatp
    replied
    Re: Losing records VERY WORRYING

    Just an update to this thread, I am still having the issue, and have updated all computers on the system to new ones running windows 7 and v11 of alpha. I have thought about going to a server instead of the NAS to host the app, but there is a fair amount of expense and approval process because of our IT department at our parent company. I hesitate to do this not knowing if it will fix the issue or not.

    Leave a comment:

  • GMLMECH
    replied
    Re: Losing records VERY WORRYING

    John, I was thinking that perhaps it is something to do with an embedded browse as I think you mentioned you had a browse in your form. I have other forms with embedded browses and do not recall any issues with them so who knows?

    Leave a comment:

  • GMLMECH
    replied
    Re: Losing records VERY WORRYING

    Tom, I "found" the time to update the last computer to V11

    Thanks

    Larry

    Leave a comment:

  • johngtatp
    replied
    Re: Losing records VERY WORRYING

    Originally posted by Tom Cone Jr View Post
    Larry,

    The standard recommendation is to run the same version ( in fact the same build of the same version ) on all workstations sharing access to / with the database. A mix of runtime and developer builds is ok, as long as they are the same version and build. It's NOT ok to run some workstations on v10 and others on v11.
    Larry,
    I am still having the same issues but less frequently, still disturbing though. I made sure that opportunistic locking was off on all Machines. I also had some on save events and put several wait until idle pauses in my scripts. I always seem to have the problem on a form editing through multiple tables in a set. To test, I put a button on my form based on the set to open a form with only one table and making the edit there. I have had no errors yet when editing in this way.

    Leave a comment:

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