ora-04030

最新推荐文章于 2024-01-17 12:07:38 发布

klr593

最新推荐文章于 2024-01-17 12:07:38 发布

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当执行SQL语句时遇到'ORA-04030: out of process memory when trying to allocate 2024 bytes'错误，这可能是由于专用服务器环境的RAM不足、PGA大小过小或内核参数设置不当导致的。解决方案包括增加pga_aggregate_target、减少sort_area_size和/or hash_area_size、切换到多线程服务器或调整系统内核参数。针对Oracle 10G，可以通过修改'ulimit'设置来解决此问题。

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执行语句：提示

ORA-04030: out of process memory when trying to allocate 2024 bytes (kxs-heap-c,kghsstk)

引用如下

Question: On an auto execute of an external job I get the error "ORA-04030: out of process memory when trying to allocate nn bytes".

Answer: This ORA-04030 can be caused by a shortage of RAM on a dedicated (non shared server) environment, a too small PGA, and by not setting kernel parameters large enough to allow enough RAM. The ORA-04030 is also common when running an import. See import ORA-04030 error tips.

Also see MOSC Note 233869.1 titled “Diagnosing and Resolving ORA-4030 errors”.

Essentially the ORA-04030 is clear, and "out of process memory" error, whereby Oracle cannot get the RAM needed to complete the operations. Depending on your release of Oracle, you have several options:

Increase pga_aggregate_target
Decrease sort_area_size and/or hash_area_size
Move to multi-threaded server (a.k.a. MTS or shared servers)

Kernel Parms - (Karpinski, Joseph E) In installing Oracle 10G we ran into a number of ORA-4030 issues.

We changed the setting of “ulimit” as follows to resolve the issue:

ulimit –a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) 4194302
memory(kbytes) unlimited
coredump(blocks) unlimited
nofiles(descriptors) 4096

It's also part of the Oracle 10G pre-install checklist:

Section "ULimits OK?"

For more on tuning sorting, see these pages:

Oracle9i pga_aggregate_target, v$pgastat

ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) unlimited
memory(kbytes) unlimited
coredump(blocks) unlimited
nofiles(descriptors) 2000

$ ulimit -Ha
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) unlimited
memory(kbytes) unlimited
coredump(blocks) unlimited
nofiles(descriptors) unlimited

重启小机，问题解决。

有些参数修改之后没有立即生效。