The operating system imposes a limit on the amount of memory that can be locked. When this limit is reached, the overlapped operations will fail with the WSAENOBUFS error.
操作系统有一个锁定最大数的限制，一旦超过这个锁定的限制，那么就会产生WSAENOBUFS错误了。
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If they are overlapped, then there would be data integrity and memory problems and new Informix instance may fail.