7. þ C. The CONNECT_DATA that specifies a SID or service is missing.
ý A, B, D, and E. A is wrong because L1 is the connect string, not an
instance or service name. B is wrong because dynamic registration is not
enough to compensate for a missing CONNECT_DATA clause. D is wrong
because the use of IPC to bypass the listener is not relevant. E is wrong
because (while certainly true) it is not the main problem.
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