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

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

DIA-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=name 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.

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openOracle Database Provider for DRDA User’s Guide for Linux x86-64
49 PLS-00049 to PLS-01917
Oracle Names Server Messages (NNO)
34 IMP-00000 to IMP-00401
Oracle Text Messages (DRG)
Oracle Names Server Network Presentation Layer Messages (NPL)
71 PCB-00001 to PCB-00903
PCF FIPS Messages (PCF)
If you do not have an Internet connection, you can look up error messages and other troubleshooting information in these books.
15 ORA-19999 to ORA-24279