ORA-02047: cannot join the distributed transaction in progress

Question

Hi All,
My requirement is to do COMMIT Transactions in BULK like 100 rows. I am doing update in Oracle and SQL Server both. Following statement update the SQL Server side:
v_sqlstr :=
'update JDETAIL set interfacedate = getdate() where company ='
|| v_company
|| ' and Recordnumber= '
|| TO_NUMBER (v_recordNumber)
|| ' COMMIT TRANSACTION';
num_rows :=
DBMS_HS_PASSTHROUGH.execute_immediate@ex_test (v_sqlstr);
After this I am calling Oracle Update Procedure . In Oracle UPDATE Procedure when I write AUTONOMOUS TRANSACTIONS AND Commit then it works fine BUT when I don't COMMIT which I don't want because I want to COMMIT in BATCHES then following error is thrown
ORA-02047: cannot join the distributed transaction in progress
Thanks

Answer 1

you can't put the commit transaction into a pasthrough statement.
Oracle Gateway starts the transaction, so you need to write the code in a way that allows the gateway to perform the commit. When doing a commit in a passhrough statement the gateway has no control over the committed data. Thus you get the error unless you start an autonomous transaction.
Why do you need to call the update in a pasthrough statement? Why not in a PL/SQl code block with a counter that commits after 100 rows?