Gateway Process Hangs with "HS message to agent" On The Fetch From Oracle In MSSQL Server (Doc ID 2232968.1)

Last updated on FEBRUARY 21, 2017

Applies to:

Oracle Database Gateway for SQL Server - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]
Information in this document applies to any platform.

Symptoms

From an Oracle 12.1.0.2 database when establishing a connection to SQL Server 2014 through Database Gateway for SQL Server 12.1.0.2 the connection hangs during a fetch
As a part of integrating Oracle Database with  SQL Server, 1000 jobs for data loading were started in Oracle which opened cursors through the database link and fetched 600 records.

At the end, 10-20 processes were hung (total processes was 1000) . The Oracle sessions are in wait "HS message to agent".

Cause

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