Question : Insert code in Trigger causes ORA01591 lock held by in doubt transaction

Hi there,
We use the Oracle transparent gateway for informix to access an informix db from oracle.
This is generally working.

When I create a trigger on the oracle db and it is fired, it causes the ORA-01591 error message. It looks like there is a problem with the 2point commit phase.

Here the trigger code:
CREATE OR REPLACE TRIGGER BTO_QMAP.AI_CELLS
AFTER INSERT
ON BTO_QMAP.QMAP_GROUPS_CELLS
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
WHEN (
new.CELLID like '%G'
      )
BEGIN
   insert into "qmap_groups_cells"@IFMX_METRICA ("fk_subgroup_name","fk_user_id","cellid")
   VALUES (:new.fk_subgroup_name, :new.fk_user_id, :new.cellid);
END ;

The values are inserted correctly into the informix database. But in oracle a lock is created for this dirstributed transaction. After accessing the involved table, the ORA-01591 "lock held by in-doubt transaction" is raised. After a COMMIT force 'transaction id', the lock is released.

When I execute a similar insert statement directly (not via trigger), then everything works fine.

Any ideas would be appreciated....

br
Kenny

Answer : Insert code in Trigger causes ORA01591 lock held by in doubt transaction

I am not able to reproduce this on my Oracle 9.2.0.4.
However I would suggest to enclose the remote access in an autonomous transaction:
-------------------------------------------
CREATE OR REPLACE TRIGGER BTO_QMAP.AI_CELLS
AFTER INSERT
ON BTO_QMAP.QMAP_GROUPS_CELLS
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
WHEN (
new.CELLID like '%G'
     )
declare
    PRAGMA AUTONOMOUS_TRANSACTION;
BEGIN
  insert into "qmap_groups_cells"@IFMX_METRICA ("fk_subgroup_name","fk_user_id","cellid")
  VALUES (:new.fk_subgroup_name, :new.fk_user_id, :new.cellid);
  commit;
exception
  when others then rollback; raise;
END ;
------------------------------------------------