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Allegro X Platinum 25.1 read only issue with Library.OLB when opening a project

AL202510019453

Hi to all,

My situation is the following: when opening a project, some libraries I used components from in that project go in lock mode (the .OLBlck file is created on the library path). I don't have any library added to the project. This happens just with specific libraries, not all the ones I'm using components from. And none of the .OLBs are open. Another weird thing is that, if a colleague of mine opens the SAME PROJECT, the library doesn't get locked. I searched around for some time but I cannot find any reason why. Could someone shed some light there?

Thanks in advance.

BR

Alberto

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  • Jeet
    0

    Have you added the library in project by 'Library > Add file' in Project manager?
    In general, lock for the olb gets created only when we open the project and the library file in associated with that project with the help of Library > Add file. However, lock goes away when we close the project. If we add part from that library on the schematic by 'Place > Part' option, lock will not get generated.
    Can you please check the opj file if there is any entry of the library file there or not where the library file is present ?

  • AL202510019453
    0 in reply to Jeet

    Hi Jeet,

    Firstly, thanks for the quick answer!

    Regarding the problem, there is no library file added or present in the project manager.

    I also forgot to mention that the lck file doesn't go away after closing the project in orcad. Only when I entirely close the program.

    BR

    Alberto

  • Jeet
    0 in reply to AL202510019453

    Alberto,

    Can you check for non-hierarchical parts present in your schematic design with 'Implementation Type' as 'Schematic View' and set their 'Implementation Type' as 'None' in the library if it is present.

    If the 'Implementation Type' property of a part is set to 'Schematic View', this part is treated like a "hierarchical part". The tool understands that it has some implementation value, and that is why its 'Implementation' value cannot be 'None'. Therefore, when you open the design file (associated with the library in question) or that particular library (.olb), Capture opens the DEVLIB library internally in order to descend to these parts and creates an olblck file, leading to this error.

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  • Jeet
    0 in reply to AL202510019453

    Alberto,

    Can you check for non-hierarchical parts present in your schematic design with 'Implementation Type' as 'Schematic View' and set their 'Implementation Type' as 'None' in the library if it is present.

    If the 'Implementation Type' property of a part is set to 'Schematic View', this part is treated like a "hierarchical part". The tool understands that it has some implementation value, and that is why its 'Implementation' value cannot be 'None'. Therefore, when you open the design file (associated with the library in question) or that particular library (.olb), Capture opens the DEVLIB library internally in order to descend to these parts and creates an olblck file, leading to this error.

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