Oracle11.2.0.4-rac cluster hang analysis record

1、 Overview of the situation ： In the morning, the company has a business system zabbix The alarm does not synchronize data normally , After checking the logs, there are connect reset situation ：

2、 Problem analysis After checking and analyzing the network , System resources , Database system resources ,awr No detailed exceptions are found in the report . Then check whether the node is hang Residential analysis ： oradebug hanganalyze 3

3、oracle Search element on the official website according to gc freelist Search for

4、 Solution ： Modify the entry according to the official website 200, Then restart the instance .

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