[Flow] typo3.flow:doctrine:migrate: 'Could not find any migrations to execute.' on Oracle DB

[Axel Wüstemann]

Hello,

I'm developping on Oracle. My Flow instance seemed to have some trouble 
so I decided to create it new (Flow v.2.0.0).

So on a fresh Flow instance I try to create the Flow database tables 
with 'typo3.flow:doctrine:migrate'.

There is no further package installed, only the database setting points 
to my Oracle database. The database is not empty but contains tables 
from my project. I need to build my project on given tables, instead of 
those generated by doctrine.

Therefore my goal here is to create only the appropriate Flow tables, 
but I can't.

The result is 'Could not find any migrations to execute.'

There apears a new table in my database: FLOW_DOCTRONE_MIGRATIONSTATUS 
with one row.

If I try 'typo3.flow:doctrine:update', I get

An exception occurred while executing 'CREATE TABLE
   typo3_flow_resource_resourcepointer (hash VARCHAR2(255) NOT NULL, PRIMARY
   KEY(hash))':

   ORA-00972: identifier is too long

Oracle allows only 30 characters for identifiers.

What should I do?

Thanks for any hint
Axel