Database - RAC/Scalability (MOSC)

MOSC Banner

Application/Clients Unable to Connect Using SCAN Name.

edited Jan 6, 2014 7:10PM in Database - RAC/Scalability (MOSC) 6 commentsAnswered
 Hi All Experts,i am facing very strange issue .. we have 4 node Rac (11gR2 11.2.0.2) running on Exadata Machine and 25 cluster databases are running on all 4 nodes. but we have one database was running fine but suddenly application guys were not able to connect from application server. starts getting below error 

ORA-12545: Connect failed because target host or object does not exist


below services they are using 

tns =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = scan02-scan)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = database)
    )
  )

i tried to connect from database server it self by using above tns but still same issue. but point of confusion is all other databases which are running are able to connect using SCAN name. then i tried to connect using VIP hostname from client machine then we are able to connect .... meaning VIP is working but SCAN Name is not working for that speacific database only ... 

Howdy, Stranger!

Log In

To view full details, sign in to My Oracle Support Community.

Register

Don't have a My Oracle Support Community account? Click here to get started.

Category Leaderboard

Top contributors this month

Instructions for posting

×

1. Select a discussion category from the picklist.


2. Enter a title that clearly identifies the subject of your question.


3. In the body, insert detailed information, including Oracle product and version.


Please abide by the Oracle Community guidelines and refrain from posting any customer or personally identifiable information (PI/CI).


Cloud / Fusion customers - Our Cloud community has moved! Please go to Cloud Customer Connect .


New to My Oracle Support Community? Visit our Welcome Center

MOSC Help Center