Updated: November 4, 2016
When monitoring the Oracle RAC instance using the Oracle User Experience monitor with Oracle drivers, the following error displays:
ORA-12545: Connect failed because target host or object does not exist
The SolarWinds server and the Oracle servers are split across two domains. When SAM attempts to poll the Oracle database residing on the Oracle RAC, it uses the host name which does not fully qualify it. Without it being fully qualified, the Orion server will be unable to resolve it correctly.
As this is a RAC instance, some of the host names (if present in same domain), may be able to resolve correctly. When the TAF listener redirects it to another member of the RAC, it is unable to resolve and will throw the ORA-12545 error.