The is a follow up to
XWIKI-19571, where the Oracle issue is fixed by adding a special value in the version (to avoid having an empty string, which is considered as null by Oracle, hence breaking a column constraint).
- is related to
XWIKI-19571 ORA-01400: cannot insert NULL into ("XWIKI"."XWIKIDOCUMENTINDEXINGQUEUE"."XWT_VERSION") when creating an instance on Oracle