在Linux下使用strace窥视Oracle LGWR进程

Linux下的strace可以帮助我们跟踪一下程序的系统调用；LGWR是Oracle中的一个重要进程，专门负责将redo写入online redo log中。

01 open("/u02/oradata/mydb/redolog/group04/redo05a.log", O_RDONLY) = 60

02 open("/u02/oradata/mydb/redolog/group04/redo05a.log", O_RDWR|O_SYNC) = 60

03 open("/u02/oradata/mydb/redolog/group04/redo05b.log", O_RDONLY) = 61

04 open("/u02/oradata/mydb/redolog/group04/redo05b.log", O_RDWR|O_SYNC) = 61

05 open("/proc/5164/stat", O_RDONLY)       = 62

06 open("/u01/app/admin/mydb/bdump/alert_mydb.log", O_WRONLY|O_CREAT|O_APPEND, 0664) = 8

07 open("/u01/app/admin/mydb/bdump/alert_mydb.log", O_WRONLY|O_CREAT|O_APPEND, 0664) = 8

08 open("/u01/app/admin/mydb/bdump/alert_mydb.log", O_WRONLY|O_CREAT|O_APPEND, 0664) = 8

09 .......

10 .......

11 .......

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