You may get the following errors when running a query that takes some time to complete (e.g. when fetching a large result set or running
select count(*) against a large table):
ORA-02068: following severe error from <link name> ORA-28511: lost RPC connection to heterogeneous remote agent using
If you turn on HSODBC tracing, the trace output will indicate that:
The problem happens because Oracle® times out the link when it takes a long time to get the data from Oracle’s SQL*Net layer to HSODBC.
You may also get these these errors:
ORA-12637: Packet receive failed ORA-12170: TNS:Connect timeout occurred ORA-12547: TNS:lost contact
When investigating this issue, we resolved the problem by adding this line to the
This setting prevents Oracle® from timing out the link to HSODBC. Please see the Profile Parameters (sqlnet.ora) in the Oracle® Database Net Services Reference Guide for full information on
This issue was reported to us by a customer who was using the Easysoft ODBC-SQL Server Driver version 1.2 with Oracle® 10.2.0.4 on an AIX platform. It is also a known problem with:
This issue has not been reported by customers using the Oracle® 11g Database Gateway (DG4ODBC).
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