Alerts

InterSystems has corrected a defect that can result in data integrity problems in environments that use InterSystems mirroring in conjunction with parallel dejournaling. This problem exists for currently released Caché and Ensemble versions beginning with 2017.2 and for InterSystems IRIS Data Platform version 2018.1.

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July 27, 2017 – Alert: Linux Defects Can Corrupt Mirror Copies of Journal Files

InterSystems has encountered defects in Linux which can corrupt copies of journal files that are generated on a mirror backup or async member; this occurs only in certain specific configurations. The original mirror journal file created on the primary member is not affected.

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June 26, 2017 – Alert: Data Corruption with Mixed Endian Mirror Shadowing

InterSystems has corrected a defect that may result in corruption of Unicode data on a shadow system whose source is an async mirror member.

This defect affects all currently released Caché, Ensemble, and HealthShare distributions beginning with version 2012.2.0.  All platforms and operating systems are affected.

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InterSystems has corrected a defect that may result in missing updates when utilizing Caché online backup.

This defect is present in all Caché and Ensemble versions 2015.1.x, 2015.2.x and 2016.1.x, and all HealthShare distributions based on those versions.  It affects all platforms and operating systems except backups of OpenVMS cluster databases.

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August 24, 2016 – Alert: Database Compaction

This is an addendum to the Alert published on October 14, 2015 – Alert: Database Defragmentation.

That alert indicated that the database defragmentation utility in 2014.1 and higher, on all platforms except OpenVMS, could cause database degradation and the correction JO2871 is available to clients upon request and would be included in future releases.  The correction was included in 2015.1.3, 2015.2.2 and 2016.1.

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February 25, 2016 – Alert: Incorrect SQL Results
InterSystems has corrected a defect that can cause incorrect results for certain SQL INSERT, UPDATE, and DELETE statements.

This defect is present only in Caché and Ensemble 2015.2 and HealthShare distributions based on them. The problem affects all platforms.

Incorrect results occur only when two or more of these statements are nested within each other.

The example below demonstrates one possible way for this problem to happen:

Last comment 8 March 2016
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