Ensemble News, Alerts, and Advisories
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May 11, 2012 – Alert: Database Compaction and Database Defragmentation May Cause Corruption
InterSystems has identified a defect in the Database Compaction and Database Defragmentation feature that can cause the target database to become corrupt.
The Database Compaction and Database Defragmentation features were introduced in Caché and Ensemble versions 2010.2, and all releases 2010.2.0 and later are at risk. This impacts all Operating Systems, except VMS where these features aren't currently enabled.
The older global compaction utility, ^GCOMPACT, is not affected.
InterSystems recommends discontinuing the use of Database Defragmentation and Database Compaction. An additional alert will be posted when a correction is available.
If either of these features, which appear in the ^DATABASE utility as options 13 ("Compact freespace in a database") and 14 ("Defragment globals in a database"), have been used, an integrity check should be run against the database(s) in question to detect if any problems were introduced.
In addition, InterSystems is removing these options from the ^DATABASE menu for 2012.2, and for any future maintenance release beyond 2012.1.2.
If you have any questions regarding this, please contact InterSystems Worldwide Response Center (WRC).
April 30, 2012 –Advisory: Network Interruptions on AIX-based Systems
InterSystems has received reports of slow TCP data transfer on IBM AIX-based machines, leading to network interruptions and TCP timeouts. Application of corrections from IBM has been found to address these reports.
If you have experienced similar problems you may want to consider these corrections.
If you have further questions regarding this advisory, please contact the InterSystems Worldwide Response Center (WRC).
April 26, 2012 – Update – Alert: Database Defragmentation or Database Compaction May Cause Corruption
InterSystems has corrected the defect outlined in the alert: "January 13, 2012 –Alert: Database Defragmentation or Database Compaction May Cause Corruption"
In this earlier alert InterSystems recommended discontinuing the use of the Database Defragmentation and Compaction. With the corrections announced here, it is now safe to use these functionalities.
The relevant corrections are identified as: JO2499, JO2503, JO2504, JO2508, SAP1374, SAP1382.
These corrections are included natively as of the following distributions of Caché and Ensemble:
- 2010.2.8
- 2011.1.4
- 2012.1.0
The corrections are also available via Ad Hoc distribution from the WRC.
If you have any questions regarding this, please contact InterSystems Worldwide Response Center (WRC).
January 13, 2012 –Alert: Database Defragmentation or Database Compaction May Cause Corruption
InterSystems has identified a defect with Database Defragmentation and Database Compaction that can cause corruption of a database. Note: the Legacy GCOMPACT utility is not affected by this defect.
This defect affects all currently released Caché and Ensemble versions beginning with 2010.2, on all platforms and operating systems except VMS (the Database Defragmentation and Database Compaction features are not available on the VMS platform).
InterSystems recommends discontinuing the use of Database Defragmentation and Database Compaction. An additional alert will be posted when a correction is available.
If either of these features has been used an integrity check should be run against the database(s) in question to detect if any problems were introduced.
If you have any questions regarding this, please contact InterSystems Worldwide Response Center (WRC).
