Client based in 12 G load balancing

We have a JDBC configuration against an address scan with client load balancing enabled.

Example:

JDBC:Oracle:Thin:@(Description=(LOAD_BALANCE=on)(Address=(Protocol=TCP)(Host=xxxxxxxxxxxx.de)(port=xxxx))(CONNECT_DATA=(service_name=XXXXXX)))

What I understand of Diference between Client-side and Server Load Balancing If you do not use the server load balancing, you can bypass by connecting the service that identifies a particular node of RAC name.


My question is, if you have a connection pool object this configuration and if the name service maps node to goes down, what happens to the connection connection pool?


Issue 1) Don't scan address switches to the available according to the name of the service node, then the JDBC driver on the client must file all embusked connections and reconnect the available node? or is all the agnostic client failure of node on and all the old connections available in the pool are available for use?



The client side or server balancing side basically works for the same purpose. The difference is that you do not have all the customers to reconfigure then change something in the environment, such as adding or removing a node such as the side server.

Answer your question...

If you mean the shared server architecture by connection pool, the shared server session connected to node 1 will die and everyone shares this session should log. Failover is not automatic, you must specify the failover clause in the JDBC or TNS connect string:

TEST_TAF =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)

(HOST = rac - scan.example.com) (PORT = 1525))

(CONNECT_DATA =

(SERVICE_NAME = test)

(FAILOVER_MODE = (TYPE = SESSION) (METHOD = Basic))

) )

Or if you use failover and load balancing services you set failover described below:

for 12 c: srvctl $ add orcl db-test - oel6vm1 favorite-available oel6vm2 - tafpolicy BASE - failovermethod SESSION service service - failoverretry 5 - failoverdelay 60

for 11g: $ srvctl add service d orcl if test - r oel6vm1 - oel6vm2 BASIC EI SESSION m - z 5 AW 60

Was what you mean?

Tags: Database

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