ORA-03113 using Database Link

Asking help Urgently..
We need to create a DB link from 7.3 to 10g. After initial problems, the DB link is finally established and we can query and do DML on the 10g DB from 7.3. using SQLPLUS.
Now the problem: We want to create triggers on tables in 7.3 DB to insert the same rows in 10g DB using the DB Link. The moment we create the trigger the connection is dropped with the error: ORA-03113: end-of-file on communication channel. We tried to write the insert statement inside a procedure/function but still the same problem.
Please help as we are desperate to find a solution for the said problem. The objective is to be able to insert a row in 10g (DB Linked) Database based on a trigger fired in 7.3 Database (Reference DB). Any help will be appreciated.
Thanks and regards.
Rajeev.

I know that 7.x to 10g is not supported officially and should not be used in production environment.
But in our case, we need it for a short duration (duration of Parallel run) and my query is that, if I am able to do inserts from the SQLPLUS using the said DB Link, then why this cannot be done thru a procedure or a trigger.
if anyone has an explanation or workaround, it will be great.
Rajeev.

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Rudi wrote:
Hi all
I have the following scenario:
The application is connecting to DB (Oracle 10.2.0.5) using jdbc connection pool.
The database is a 3-node RAC.
Using DB Link we access a PLSQL package on a remote database (10.2.0.4).The remote database is a single instance.
The remote database is not located behind FW.
Sometimes the remote DB is restarted, but we seem to hit these errors about 30 mins afterwards.
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893968 wrote:
We're running 11r2 on our servers. I have a primary db and a standby db, using Data Guard. The standby is open for read-only querying. We are not using ASM.
The primary (and thus the standby) have a PUBLIC database link to a third db server.
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null

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