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Oracle Redo log日志组故障分析

 2007-05-10 12:16:09 来源:WEB开发网   
核心提示: 使用Top命令观察一下该进程的CPU耗用:oracle:/oracle/oracle8>toplast pid: 21145;load averages:3.38,3.45,3.67 18:53:38725 processes: 711 sleeping, 1 running, 10

使用Top命令观察一下该进程的CPU耗用:

oracle:/oracle/oracle8>top
last pid: 21145; load averages: 3.38, 3.45, 3.67        18:53:38
725 processes: 711 sleeping, 1 running, 10 zombie, 3 on cpu
CPU states: 35.2% idle, 40.1% user, 9.4% kernel, 15.4% iowait, 0.0% swap
Memory: 3072M real, 286M free, 3120M swap in use, 1146M swap free
PID USERNAME THR PRI NICE SIZE  RES STATE  TIME  CPU COMMAND
11855 smspf   1 59  0 1355M 1321M cpu/0  19:32 16.52% oracle
 2264 oracle   1  0  0 1358M 1316M run  283.3H 16.36% oracle
11280 oracle   1 13  0 1356M 1321M sleep  79.8H 0.77% oracle
 6957 smspf   15 29  10  63M  14M sleep 107.7H 0.76% java
17393 smspf   1 30  0 1356M 1322M cpu/1 833:05 0.58% oracle
29299 smspf   5 58  0 8688K 5088K sleep  18.5H 0.38% fee_ftp_get
21043 oracle   1 43  0 3264K 2056K cpu/9  0:01 0.31% top
20919 smspf   17 29  10  63M  17M sleep 247:02 0.29% java
25124 smspf   1 58  0  16M 4688K sleep  0:35 0.25% smif_status_rec
 8086 smspf   5 23  0  21M  13M sleep  41.1H 0.24% fee_file_in
16009 root    1 35  0 4920K 3160K sleep  0:03 0.21% sshd2
25126 smspf   1 58  0 1355M 1321M sleep  0:26 0.20% oracle
 2266 oracle   1 60  0 1357M 1317M sleep 811:42 0.18% oracle
11628 smspf   7 59  0 3440K 2088K sleep  0:39 0.16% sgip_client_ltz
26257 smspf   82 59  0 447M 178M sleep 533:04 0.15% java

我们注意到,2266号进程消耗的CPU不过0.18%,显然并不繁忙,DBWR并不繁忙,但是检查点无法完成,那么我们可以判断,瓶颈就很可能出现在IO上。

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Tags:Oracle Redo log

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