RAC节点 reliable message 等待事件！
EventWaits%Time -outsTotal Wait Time (s)Avg wait (ms)Waits /txn
reliable message14,8160.99209140.08
control file sequential read530,8310.0010802.71
control file parallel write63,6340.006810.32
db file parallel write22,1920.005930.11
gc cr block 2-way35,4110.001600.18
CGS wait for IPC msg1,882,810100.001509.61
log file parallel write8,4680.001420.04
enq: WF - contention1,5100.26960.01
log file sync1060.007650.00
os thread startup2330.867290.00
gc current multi block request
reliable message 这个等待事件，是因为网络原因，还是CRS问题！ 那这个等待事件怎么解决呢？
When you send a message using the 'KSR' intra-instance broadcast
service, the message publisher waits on this wait-event until
all subscribers have consumed the 'reliable message' just sent.
The publisher waits on this wait-event for three seconds and
then re-tests if all subscribers have consumed the message, or
until posted.
这是官方的解释，先确认是不是网络问题。
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