ONS configuration error on oracle connections

[JordiMontane]

System information:

• Operating system. MacOS 10.15.4
• DBeaver version. 7.1 CE
• Java version 8

Connection specification:

• Database name and version. Oracle database
• Driver name. oracle.jdbc.OracleDriver [12.2.0.1], ojdbc8.jar
• Do you use tunnels or proxies (SSH, SOCKS, etc)? NO

Describe the problem you're observing:

since upgrading to beaver 7.1 my existing Orcale connections throw an error when starting the connection:
Unexpected driver connection error
ONS configuration
ONS configuration
timeout

the existing prostgres connections work ok as with previous version (7.0.5).

Steps to reproduce, if exist:

double click on connection or highlight the connection and click the 'connect' icon

The error log does not show any entry.

[JordiMontane]

from what I see it is more related to the ojdbc drivers that the dbeaver upgrade demanded than to the dbeaver itself.
I'll downgrade to ojdbc7.jar to check

[JordiMontane]

OK. downgrading to ojdbc7.jar the connections work ok.

[TuSKan]

Same error

[p91paul]

see #9002 for a workaround