Database Networking (MOSC)

MOSC Banner

RAC TNS-12521: TNS:listener does not currently know of instance requested in connect descriptor

edited Jun 25, 2024 1:36AM in Database Networking (MOSC) 12 commentsAnswered

Hello,

I have RAC cluster and problem with my web application. It looks that web portal still uses node that is down.

I made simple tests
srvctl status service -d orcl
Service orclservice is running on instances(s) orcl1, orcl2

So next I'm stopping instance orcl2 by
srvctl stop instance -db orcl -i orcl2 -failover -f

srvctl status service -d orcl
Service orclservice is running on instances(s) orcl1

Unfortunately at web application i get "TNS:listener does not currently know of instance requested in connect descriptor"

Listener logs indicate that we application is still use instance orcl2
(INSTANCE_NAME=orcl2))

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