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    Oracle Error ORA-12528: TNS:listener: all appropriate instances are blocking new connections

    admin November 15, 2022 No Comments

    Oracle Error Message

    ORA-12528: TNS:listener: all appropriate instances are blocking new connections

    Reason for the Error

    All instances supporting the service requested by the client reported that they were blocking the new connections. This condition may be temporary, such as at instance startup.

    Solution

    Attempt the connection again. If error persists, then contact the administrator to check the status of the instances.

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