Skip to content
Effettua una ricerca per conoscere i prodotti e le soluzioni di InterSystems, le opportunità di carriera e altro ancora.

Alert: Potential Data Integrity Issue with Mirror Dejournaling

March 23, 2021 – Alert: Potential Data Integrity Issue with Mirror Dejournaling

InterSystems has corrected a defect that can cause data inconsistency issues on non-primary mirror members in extremely rare circumstances. This defect affects all released versions of InterSystems products.

If the defect occurs, it happens silently during normal operation on a mirrored system. The result of this defect is that a mirror member fails to dejournal a subset of journal records, which then leads to data inconsistency across mirror members. This affects both failover and async members. Although this defect is very unlikely to be encountered, InterSystems recommends that all customers using mirroring obtain the corrections and verify the consistency of mirrored databases with DataCheck. For more details on the specific circumstances that can trigger the defect and steps to minimize the risk of encountering it, please contact the Worldwide Response Center (WRC).

The corrections for this defect are identified as SML2898, HYY2434, and HYY2435 and will be included in all future product releases, including Caché and Ensemble 2018.1.5 and InterSystems IRIS and InterSystems IRIS for Health 2019.1.2 and 2020.1.1. The corrections are also available via Ad hoc distribution from the InterSystems Worldwide Response Center (WRC).

If you have any questions regarding this alert, please contact the Worldwide Response Center.

 

 

Latest Alerts & Advisories

15 Aug 2024
InterSystems has corrected a defect that can cause database corruption or errors with multi-volume databases under extremely rare circumstances. Only databases that have been truncated are at risk.
24 Jul 2024
There are four alerts in the HS2024-03 Alert Communication. A summary of each alert is shown below. Details for each alert are contained in the linked document.
24 Jun 2024
Broadcom recently announced a problem that can cause data consistency errors in database applications. The Broadcom article is available here:
30 May 2024
Beginning with the release of InterSystems IRIS® data platform 2022.3, InterSystems corrected the license enforcement mechanism to include REST and SOAP requests. Due to this change, environments with non-core-based licenses that use REST or SOAP may experience greater license utilization after upgrading. To determine if this advisory applies to your InterSystems license, follow the instructions in the FAQ linked below.
01 May 2024
InterSystems has corrected an issue that can cause a small number of SQL queries to return incorrect results. See below for the specifics on impacted queries.
08 Apr 2024
InterSystems has encountered a defect that causes some upgrades of HealthShare® Health Connect to fail. This only affects instances that are not licensed for the use of FHIR® and that have interoperability-enabled namespaces. Under these conditions, the upgrade fails with an error.
19 Mar 2024
In evaluating an IBM Support notification, InterSystems has determined a potential impact for our customers. The notification in question is:
27 Feb 2024
There is 1 alert in the HealthShare HS2024-limited Alert communication. An alert summary for the issue is shown is in the table below. Details for the alert are contained in the attached document: HS2024 Limited Communication.
01 Feb 2024
There are 2 alerts in the HealthShare HS2024-02 Alert communication. An alert summary for each issue is shown is in the table below. Details for each alert are contained in the attached document: HS2024-02-Communication.