Hi Guillaume,
Please check if this note can be implemented into your solution manager system.
1946165 SYB: Solution Manager Technical Monitoring Patch Collection
Also look at this:
ASE Error 207 - SAP ASE - SCN Wiki
If you say the error is regarding this table specifically do you see missing index/table entry for it in dbacockpit?
/BI0/HIOBJNM
What is your version of ASE? Please attach copy of the dump here.
Johan