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Asked: 2026-05-31T00:42:36+00:00

Why doesn’t Oracle’s driver support READ_UNCOMMITTED?

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Why doesn’t Oracle’s driver support READ_UNCOMMITTED?

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  1. Editorial Team

    Quoting from Tom Kyte:

    The READ UNCOMMITTED isolation level allows dirty reads. Oracle
    Database doesn’t use dirty reads, nor does it even allow them. The
    basic goal of a READ UNCOMMITTED isolation level is to provide a
    standards-based definition that allows for nonblocking reads. As
    you’ve seen, Oracle Database provides for nonblocking reads by
    default.

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