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open book Notes on Nuclos 4.2025.34

Special upgrade notes for Nuclos 4.2025.34 beyond the regular release notes.

REFERENCE ADMINISTRATORS UPDATED: JUL 2026 APPLIES TO NUCLOS 4.2026.X

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Machine-translated – under review

This page was machine-translated from German as a first draft and is currently under review. The authoritative source remains the German original (see the language switch above).

The notes on this page highlight special changes that require separate mention beyond the release notes. This applies in particular when upgrading to a new Nuclos release requires certain additional preceding or subsequent measures that must be observed to avoid unwanted behavioral changes or side effects introduced by new features.

Schema change to the data-language tables (_LANG)

As of Nuclos 4.2025.34, databases that are on the schema level of a previous version undergo a migration of the data-language tables. The foreign-key columns of the data-language tables are switched to "onDeleteCascade". This makes it possible to delete records that reference a localized BO, which was not possible before because the translations were not deleted automatically in a cascading manner. Previously the reference had to be deleted manually first. In addition, when a data language is deleted, all translations for that language are now automatically deleted in a cascading manner. Previously a data language could no longer be removed while translations for it still existed in a <Businessobject>_LANG table.


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