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ORA-04030错误解决过程一例

时间:2021-07-01 10:21:17 帮助过:43人阅读

综合分析,报了04030的错误,而下面又分别报了27302及27301的错误。根据报错的意思,一方面,创建会话失败,另一方面,无法找到映

今天客户说从数据库后台发现报错,具体如下:

Errors in file /Oracle/linuxidc/saptrace/diag/rdbms/linuxidc/linuxidc/incident/incdir_183218/linuxidc_j003_8103_i183218.trc:
ORA-04030: out of process memory when trying to allocate 1052696 bytes (pga heap,log read buffer)
ORA-07445: exception encountered: core dump [kgdsdst()+16] [SIGSEGV] [ADDR:0xFFFFFFFF7FFB4634] [PC:0x1081A1C90] [Address not mapped to object] []

在查看的时候,并没有发现有什么语句问题的,检查系统限制如下:

root@linuxidc # ulimit -a
core file size (blocks, -c) unlimited
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
open files (-n) 256
pipe size (512 bytes, -p) 10
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 29995
virtual memory (kbytes, -v) unlimited

同时,报错中指出Address not mapped to object,可能存在没有足够的交换分区

紧接着,又有如下报错

Errors in file /oracle/linuxidc/saptrace/diag/rdbms/linuxidc/linuxidc/trace/linuxidc_psp0_27454.trc:
ORA-27300: OS system dependent operation:fork failed with status: 12
ORA-27301: OS failure message: Not enough space
ORA-27302: failure occurred at: skgpspawn3

根据官网的介绍如下:

Cause

This issue is mainly caused by lack of memory / swap. Checking the memory configuration on the server, we have found the following

综合分析,报了04030的错误,而下面又分别报了27302及27301的错误。根据报错的意思,,一方面,创建会话失败,另一方面,无法找到映射地址,所以怀疑与交换分区有关

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该数据库是安装在solaris11上面的,检查如下:

root@linuxidc # swap -h -l
swapfile dev swaplo blocks free
/dev/zvol/dsk/rpool/swap 285,2 8K 4.0G 4.0G

交换分区只有4g,而物理内存有40g,显然过小,应该是由于这个问题引起的

解决办法就是扩展交换分区,solaris11的调整方法发生了变化,不同以前的版本

root@linuxidc:~# zfs set volsize=30g rpool/swap

检查调整结果:

root@linuxidc # swap -h -l
swapfile dev swaplo blocks free
/dev/zvol/dsk/rpool/swap 285,2 8K 4.0G 4.0G
/dev/zvol/dsk/rpool/swap 285,2 4.0G 26G 26G

调整完成后,叫继续跟踪,结果几个星期过去后,再也没有报错!

本文永久更新链接地址:

linux

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