Oracle Listener services
Hi, I am currently working on what the content of LSNRCTL STAT is actually showing me
In my case the summary of this command shows me
Summary of services...
Service '+ ASM' a 1 instance (s).
Instance '+ ASM1' READY State, has 1 operation for this service...
Service 'RAC1DB' has 1 instance (s).
'RAC1DB1' instance, State LOAN, has 1 operation for this service...
Service 'RAC1DBXDB' has 1 instance (s).
'RAC1DB1' instance, State LOAN, has 1 operation for this service...
The command completed successfully
Q1. "Of SERVICE" above means it's Service Oracle aka Oracle database Service, which has been registered by the listening port?
Q2. Can a Service cause more 1 Instance and under what circumstances?
Q3. What exactly is the Service for the instance manager and how is it related to the Oracle function?
Q4. Can an Instance cause more than 1 Manager of Service and under what circumstances?
any help appreciated,
Jim
Hello
Q1. "Of SERVICE" above means it's Service Oracle aka Oracle database Service, which has been registered by the listening port?
Yes these are the DRH regestered a database services or services defined statically in listener.ora
Q2. Can a Service cause more 1 Instance and under what circumstances?
Yes, generally in the CARS (several instances of all access to the same database). You may have also several databases offering the same service (with replication, for example)
Q3. What exactly is the Service for the instance manager and how is it related to the Oracle function?
Service managers are the way to connect to the database. The listener redirects the client to it. It can be a dedicated process, or a dispatcher.
Q4. Can an Instance cause more than 1 Manager of Service and under what circumstances?
Yes. For example you can have one dedicated and shared before. You see them with lsnrctl services
Kind regards
Franck.
Tags: Database
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