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ORA-28511: lost RPC connection to heterogeneous remote agent using SID=ORA-28511: lost RPC connection to heterogeneous remote

BlagyHristovaSep 29 2025

Hi,

I have created a link between oracle and PostgreSQL database. When I execute select I get the following error:

ORA-28511: lost RPC connection to heterogeneous remote agent using

These are the configuration details:

OS: Red Hat Linux 6.7 64-bit
Oracle DB: Oracle Ent Ed 12.1.0.2 64-bit
Gateway: Oracle Gateway for ODBC 64-bit 12.2.0.1.0
DriverName:psqlodbcw.so, DriverVer:12.00.0000
Postgresql DB: Version:17.0.4

HS init params:

HS_FDS_TRACE_LEVEL = 255
HS_FDS_SHAREABLE_NAME = /usr/pgsql-12/lib/psqlodbc.so
HS_LANGUAGE = AMERICAN_AMERICA.AL32UTF8
HS_NLS_NCHAR=UCS2
HS_FDS_DELAYED_OPEN=FALSE
HS_FDS_FETCH_ROWS=1

From trace file:

Exiting hgopars, rc=0 at 2025/09/29-16:39:55
hostmstr: 0: HOA After hoxpars
hostmstr: 0: HOA Before hoxopen
Entered hgoopen, cursor id 1 at 2025/09/29-16:39:55
hgoopen, line 89: NO hoada to print

Many thanks!

Regards

Blagy

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