Lock_Timeout=n

    Specifies a timeout interval or maximum time in seconds to
    wait for the quiet-point lock and any other locks needed when
    the operation is performed online. When you specify the Lock_
    Timeout=seconds qualifier, you must specify the number of seconds
    to wait for the quiet-point lock. If the time limit expires, an
    error is signaled and the copy operation fails.

    When the Lock_Timeout=seconds qualifier is not specified, the
    copy operation waits indefinitely for the quiet-point lock and
    any other locks needed during an online copy operation.

    The Lock_Timeout=seconds qualifier is ignored for offline copy
    operations.