Best Practices and Recommendations for RAC databases with SGA size over 100GB(文档 ID 1619155.1)

a.      Set _lm_sync_timeout to 1200 
           Setting this will prevent some timeouts during reconfiguration and DRM. It's a static parameter and rolling restart is supported.


b.      Set _ksmg_granule_size to 134217728
           Setting this will cut down the time needed to locate the resource for a data block. It's a static parameter and rolling restart is supported.



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