错误在并行查询服务器P008中发出信号

Question

我在Oracle 11g上遇到以下错误。

选择查询中出现错误。

error signaled in parallel query server P008
ORA-12853: insufficient memory for PX buffers: current 29088K, max needed 
591360K
ORA-04031: unable to allocate 65560 bytes of shared memory ("large 
pool","unknown object","large pool","PX msg pool")

这是我的AT环境，有足够的空间。

谁能告诉我如何克服这个问题。