7 Replies Latest reply on Nov 14, 2012 1:47 AM by ThoNguyen

    where is the file extent map ?

      hello everybody,
      I have a question. In Oracle Cluster, when Database Instace want to do I/O on a database file stored in ASM it first have to interactive with ASM instance. ASM Instace will provide Database Instance with ASM File Extent Map . ASM File Extent Map will show Database Instance where file's extents . After that Database Instance can perform direct I/O to the Database File. So where is the ASM File Extent Map ?What store ASM File Extent Map ? somebpdy can tell me ???