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The Virtuoso 08.03.3326+ engine has been enhanced to use 64-bit prefix IDs in RDF_IRI which allows for even larger databases. This enhancement fixes two important problems in Virtuoso: 1. When Virtuoso was upgraded to use 64-bit IRI_IDs around v6.0.x, we forgot to upgrade the RDF_IRI table to use a 64-bit prefix ID. This meant that Virtuoso could only store around 2 billion distinct prefixes before returning an error. 2. The algorithm to generate distinct prefixes resulted in too many prefixes being created. While this is not a problem for storing small or even medium sized data sets, this becomes a problem when you want to host large databases the size of Uniprot which now contains over 90 billion triples

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  • Migrating Virtuoso from a 32-Bit Prefixed to 64-Bit Prefixed Database
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  • The Virtuoso 08.03.3326+ engine has been enhanced to use 64-bit prefix IDs in RDF_IRI which allows for even larger databases. This enhancement fixes two important problems in Virtuoso: 1. When Virtuoso was upgraded to use 64-bit IRI_IDs around v6.0.x, we forgot to upgrade the RDF_IRI table to use a 64-bit prefix ID. This meant that Virtuoso could only store around 2 billion distinct prefixes before returning an error. 2. The algorithm to generate distinct prefixes resulted in too many prefixes being created. While this is not a problem for storing small or even medium sized data sets, this becomes a problem when you want to host large databases the size of Uniprot which now contains over 90 billion triples
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