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    Primo MT NA03 RCA - June 24, 2019

    Confidential Information, Disclaimer and Trade Marks

    Introduction

    This document serves as a Root Cause Analysis for the Primo service interruption experienced by Ex Libris customers on June 24, 2019.

     

    The goal of this document is to share our findings regarding the event, specify the root cause analysis, outline actions to be taken to solve the downtime event, as well as preventive measures Ex Libris is taking to avoid similar cases in future.

    Event Timeline

    Service interruption was experienced by Ex Libris customers served by the Primo MT NA03 instance at the North America Data Center during the following hours: 

    June 24, 2019 from 11:40 PM until 11:52 PM Chicago timezone

    During the event, the service was unavailable for the environment.

    Root Cause Analysis

    Ex Libris Engineers investigated this event to determine the root cause analysis with the following results:

    Increase in updates caused high load on the Database and resulted in service disruption.
    Ex Libris engineers restarted the environment to restore the service.

    Technical Action Items and Preventive Measures

    Ex Libris has taken the following action and preventive measures to avoid such an occurrence in future:

    • Ex Libris engineers restarted the environment to restore the service.
    • Ex Libris engineers optimized Database configurations to accommodate the increase in load.

    ExLibris is committed to providing customers with prompt and ongoing updates during Cloud events. Ongoing and prompt updates on service interruptions appear in the system status portal at this address: http://status.exlibrisgroup.com/

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