InterSystems has corrected a defect that can result in application data integrity issues following an abnormal shutdown.
This problem exists for:
- Caché and Ensemble 2018.1.2
- HealthShare Health Connect (HSAP) 15.032 on Core version 2018.1.2
- InterSystems IRIS Data Platform 2019.1
- InterSystems IRIS for Health 2019.1
- HealthShare Health Connect 2019.1
The defect breaks the journal sync guarantee that all updates in the journal buffer have been written to the journal file. The failure is silent: it does not generate an error message and there is no entry about it in any log file.

PHP, from the beginning of its time, is renowned (and criticized) for supporting integration with a lot of libraries, as well as with almost all the DB existing on the market. However, for some mysterious reasons, it did not support hierarchical databases on the globals.
In the previous parts (

