ORACLE and AUDITLOG_TWO_STEP_MIGRATION

[andreasgou]

An observation regarding auditlog and Oracle DB.

Even if you are setting up auditlog for the first time and your backend database is Oracle, this issue is present when running migrate:
oracledb.exceptions.DatabaseError: ORA-01451: column to be modified to NULL cannot be modified to NULL

After some experiments I discovered that before running the migrate command, you have to setup the following variables to True (settings.py), just like your documentation says on migrating to version 3.x

AUDITLOG_TWO_STEP_MIGRATION = True
AUDITLOG_USE_TEXT_CHANGES_IF_JSON_IS_NOT_PRESENT = True

Then set them back to False (or remove them) and continue with the installation.

Thank you for this nicely made plugin !

[hramezani]

Thanks @andreasgou for reporting this.

Could you make a PR and improve the doc?