In /apache-roller-3.1/webapp/roller/WEB-INF/dbscripts/oracle I ran the above script to migrate from 3 to 3.1, and got this error:

SQL> alter table rag_group_subscription drop id not null;
alter table rag_group_subscription drop id not null
                                       *
ERROR at line 1:
ORA-00905: missing keyword



I tried to guess the right syntax, and ran this, and got the following response:

SQL> alter table rag_group_subscription modify id null;
alter table rag_group_subscription modify id null
                                         *
ERROR at line 1:
ORA-01451: column to be modified to NULL cannot be modified to NULL



Presumably I violated a primary key constraint.

I'm new to this list (and new to upgrading Roller), so I apologise if I'm not posting to the right place, or if I've missed the documentation.

Jerry

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