The buffer manager detected that the system was low on virtual memory, but was unable to swap out any buffers. %1!d! buffers ...

The buffer manager detected that the system was low on virtual memory, but was unable to swap out any buffers. %1!d! buffers were considered and %2!d! were locked. Either not enough memory is available to the pipeline because not enough is installed, other processes are using it, or too many buffers are locked.