Database format changed?

Hi, we're getting this error [FODC0004] from our BaseX database out of the blue on our test machine. 14:25:38.236 [127.0.0.1:39513] QUERY(0) declare namespace lexus="http://www.mpi.nl/lat/lexus"; declare function lexus:lexicon($lexus as node()) as node()* { element lexicon { $lexus/lexicon/@*, $lexus/meta } }; let $id := 'uuid:0190305e-730b-4a39-b4c0-2962f09bc01d' let $lexus := collection('lexus')/lexus[@id eq $id] let $schema := $lexus/meta/schema return element result { $schema, lexus:lexicon($lexus) } OK 14:25:38.236 [127.0.0.1:39513] QUERY(0) OK 14:25:38.300 [127.0.0.1:39510] INIT(0) Error: Stopped at line 5, column 48: [FODC0004] The database format has changed; please create a new database. 14:25:38.300 [127.0.0.1:39510] CLOSE(0) OK AFAICT nothing has changed, nobody copied over database files or accessed the database through another interface or something like that. Any ideas on what can cause such a message? When was the last time the format did change? What can we do about it (other than do as it says, assuming it's not actually a feature)? Thanks, Huib Verweij.

Dear Huib,

Hm, the database version hasn't been changed since Version 5.91 (which was released more than 18 months ago): https://github.com/BaseXdb/basex/blob/master/src/main/java/org/basex/data/DataText.java What happens if you try to open your database with the latest official version of BaseX? Have you done backups on your database, which you could try? If the problem persists, feel free to send me the inf.basex file of your database, which might give us some hints. Best, Christian

Hi Christian, I copied the datafiles over to my machine which uses the latest and the greatest from git. Same result. At the test machine we used the latest official release. I have deleted the database, upgraded the server to the latest from Git and then restored from original XML files, it is working again. I'll send you inf.basex file. Thanks for your swift response. Huib.