Question

我收到了以下错误。我的数据库版本是＃34; Oracle Database 12c企业版12.1.0.2.0版 - 64位生产版＆＃34;我已经通过了Doc ID 1919850.1。我想知道是否有任何方法可以避免交换。

WARNING: Heavy swapping observed on system in last 5 mins. pct of
memory swapped in [1.80%] pct of memory swapped out [3.26%]. Please
make sure there is no memory pressure and the SGA and PGA are
configured correctly. Look at DBRM trace file for more details. Errors
in file /oradb/oracle/diag/rdbms/PROD/PROD/trace/PROD_dbrm_7340532.trc
(incident=16875): ORA-00700: soft internal error, arguments:
[kskvmstatact: excessive swapping observed], [], [], [], [], [], [],
[], [], [], [], [] Incident details in:
/oradb/oracle/diag/rdbms/PROD/PROD/incident/incdir_16875/PROD_dbrm_7340532_i16875.trc
Tue Jun 16 09:41:47 2015 Dumping diagnostic data in
directory=[cdmp_20150616094147], requested by (instance=1,
osid=20120017 (DBRM)), summary=[incident=16875]. Tue Jun 16 09:41:50
2015 Sweep [inc][16875]: completed Sweep [inc2][16875]: completed

Answer 1

我们在该服务器上配置了hugepage来解决问题。

Answer 2

很明显内存不足，如果服务器内存有足够的可用空间，请尝试增加SGA（和PGA）最大大小，如果服务器内存较少，请考虑添加一个或增加/proc/sys/vm/swappiness（只有必要）。

Answer 3

为了能够增加SGA和PGA，您需要有内存，... 如果设置大页，则映射表（由进程管理的表）将自动消耗更少的内存，而我们有更多的内存来增加PGA和SGA

在oracle 12.1.0.2上进行大量交换

3 个答案: