ORA-28528 When Selecting Several Consecutive Times Via Gateway 11g

(Doc ID 1052017.1)

Last updated on JANUARY 18, 2017

Applies to:

Oracle Database Gateway for SQL Server - Version 11.1.0.7 to 11.2.0.3 [Release 11.1 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 09-Jan-2013***

Symptoms

On 11.1.0.7 version and 11.2, Database Gateway for MS SQL (DG4MSQL).

When attempting to execute a SELECT on different tables, after 7 consecutive SELECT statements, the following error occurs.

It works without any problem in 11.1.0.6

ERROR
-----------------------
ORA-28528 Heterogeneous Services Datatype Conversion Error
ORA-2063 ORA-02063: preceding line from


STEPS
-----------------------
The issue can be reproduced at will with the following steps:
1. Select * from table@dblink where rownum>2
2. Select column1, column2 from table@dblink where rownum>2

Cause

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