ORA-00164 but I cant find an autonomous transaktion

Question

Hello,
I have the following statement
SQL> create table tab2 as
2 select * from tab1@dblink;
and get the error
select * from tab1@dblink
ERROR at line 2:
ORA-00604: error occurred at recursive SQL level 1
ORA-00164: autonomous transaction disallowed within distributed transaction
where is the autonomous transaktion??
when the table exists and I do an 'insert into select' by dblink it works
The same statement worked before and I don't know about any changes in the db-parameters.
We work with 8.1.7
Thank you for any help

Answer 1

Thanks for the answer,
but I found out, that our DBA had installed a BigBrother package, because sometimes tables got 'lost' without anybody knowing anything. Started by a logon Trigger it used autonomous transaktions to write the log.
Now it runs with simple transactions and the error is gone.
Marcus