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log file switch (private strand flush in 354 30876 87.22
complete)
[php]User sessions trying to generate redo, wait on this event when LGWR waits for DBWR to complete flushing redo from IMU buffers into the log buffer. When DBWR is complete LGWR can then finish writing the current log, and then switch log files.[/php]
dbwr也很慢呀
redo bytes/s多大呀?
现象是突发还是一直这样? |
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