I have read couple of articles on google but not sure how DB client for example java application connect to clustered DB. All the articles I read says client will write at master node but will use slave for read.
My question is how client will know which one is master(and its location) and which one is slave(and its location). Does Oracle uses any router server(sitting separately on existing or different node) and java client will connect to this router and it is the responsibility of router to send the calls to master or slave based on request type (DDL or DML) ?
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