ORA-28509: unable to establish a connection to non-Oracle system

Cause: Initialization of a database link to a non-Oracle system failed to connect to the Heterogeneous Services agent process for this non-Oracle system.

Action: Check the Net8 service name definition in the following places: -- the USING clause of the CREATE DATABASE LINK statement -- the TNSNAMES.ORA file -- the Oracle Names Server The following are possible reasons for name mismatches: -- The USING clause in the CREATE DATABASE LINK statement has to match the service name defined in the TNSNAMES.ORA file or in the Oracle Names Server. -- The protocol-specific information in the service name definition must match the protocol-specific definition of the responding listener. -- The SID= in the service name definition (in the TNSNAMES.ORA file or in Oracle Names Server) must match the value in the LISTENER.ORA file for the responding listener.

Error Type: ORA

• Additional information for ORA-28509: unable to establish a connection to non-Oracle system28509
Discussions and solutions for Oracle Database Error ORA-28509: unable to establish a connection to non-Oracle system Developer anwers for Oracle Database Error ORA-28509: unable to establish a connection to non-Oracle system FAQs for ORA-28509: unable to establish a connection to non-Oracle system search others tips for ORA-28509: unable to establish a connection to non-Oracle system