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Data Federator Exception File I/O error.

Hi All,

Has anyone come across this error before whilst using Data Federator ?

Exception File I/O error : There is not enough space on the disk

I presume that the virtual table that DF is creating to answer the issued query is too large for the disk, however I cannot see where I can set the default temp working location for DF so that I can point this to an area that has a large amount of space available.

Does anyone know of any config files or areas that will allow me to change the settings for this?

Many thanks


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  • Posted on Oct 27, 2010 at 10:47 AM

    Hi Dave,

    DataFederator uses HSQL DB as its repository ,which saves only metadata, it uses 512 MB of space by default.

    All Query Processing happens in Query server, it will use 512 MB of space by default, you can increase the buffer size in Datafederator administrator tool.

    To do that:

    -Login to DF Admin Tool

    -Go to Administrator Tab, and click on Configuration link

    -Under System Properties tab, change the value of "core.bufferManager.bufferSize "( say if you change from 128 to 512 .)

    -you can even change to 1024 or 2048 etc based on system configuratoins.

    core.bufferManager.executorMemory will use 80% of core.bufferManager.bufferSize you set.

    Make sure you have Enough meomory in your system to chage the BufferSize.

    You can even change the virtual meomory in your system

    You can check the user guide , chapter: Managing system and session parameters--->List of parameters

    Hope this Helps



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