[Sqlalchemy-tickets] Issue #4369: remove depreacted cx_Oracle connect params, let all keywords through (zzzeek/sqlalchemy)

[Michael B. <iss...@bi...>]

New issue 4369: remove depreacted cx_Oracle connect params, let all keywords through
https://bitbucket.org/zzzeek/sqlalchemy/issues/4369/remove-depreacted-cx_oracle-connect-params

Michael Bayer:

cx_Oracle is moving very fast these days and it now allows a lot of new arguments: https://cx-oracle.readthedocs.io/en/latest/module.html#cx_Oracle.Connection

we need to at least allow connect_args to travel through generically and we should also string-coerece the ones that are listed in the above document.

Additionally, we should not be setting threaded=True.   SQLAlchemy connections are not threadsafe in any case.   Allow it as an option, make sure we document that this changed.

Remove all the unused and warned as deprecated params auto_setinputsizes, allow_twophase, "threaded" as  a dialect flag (what's that about anyway?), 

use_ansi really should not be part of connect_args, it's a dialect flag, as well as auto_convert_lobs.   as a bonus, deprecate that these are part of connect_args, but this is not critical.