---
title: OBServer core，sig=7，sig_code=4 的原因和处理方法-OceanBase数据库使用指南
description: 了解OceanBase数据库在实际应用中关于OBServer core，sig=7，sig_code=4 的原因和处理方法相关的常见问题和使用技巧，帮助您快速解决OBServer core，sig=7，sig_code=4 的原因和处理方法的难题。
---
切换语言

- 中文站 - 简体中文
- International - English
- 日本站 - 日本語

划线反馈

# OBServer core，sig=7，sig_code=4 的原因和处理方法

更新时间：2026-06-04 09:56

适用版本： V1.4.x、V2.1.x、V2.2.x、V3.1.x、V3.2.x、V4.0.x、V4.1.x、V4.2.x、V4.3.x 内容类型：Troubleshoot  

## 问题现象

OBServer 随机 core，查看堆栈发现内存状态正常。crash 信息为 `sig=7,sig_code=4`。

## 关键信息

通过 grep 命令过滤出 observer.log 日志中有关 `CRASH` 的信息，能看到 `sig=7,sig_code=4`。

![image](https://obbusiness-private.oss-cn-shanghai.aliyuncs.com/doc/img/knowledge-base/database/cluster-management/20250708obser-core-sig-7-sig-code-4.png)

查看 dmesg 信息，能够看到有硬件故障报错，日志信息如下。

```shell
[13739087.142412] mce: [Hardware Error]: Machine check events logged
[13739087.190098] Disabling lock debugging due to kernel taint
[13739087.190103] mce: [Hardware Error]: Machine check events logged
[13739087.210816] EDAC skx MC7: HANDLING MCE MEMORY ERROR
[13739087.210820] EDAC skx MC7: CPU 32: Machine Check Event: 0x0 Bank 25: 0xac00000200a00090
[13739087.210822] mce: Uncorrected hardware memory error in user-access at 60ae6eaa80
[13739087.219562] MCE 0x60ae6ea: Killing observer:18651 due to hardware memory corruption
[13739087.219566] MCE 0x60ae6ea: dirty LRU page recovery: Recovered
[13739087.235839] EDAC skx MC7: TSC 0x0
[13739087.235841] EDAC skx MC7: ADDR 0x60ae6eaa80
[13739087.235842] EDAC skx MC7: MISC 0x80008080b994c86
[13739087.235842] EDAC skx MC7: PROCESSOR 0:0x606a6 TIME 1751438335 SOCKET 1 APIC 0x80
[13739087.235850] EDAC MC7: 1 UE memory read error on CPU_SrcID#1_MC#3_Chan#0_DIMM#0 (channel:0 slot:0 page:0x60ae6ea offset:0xa80 grain:32 -  err_code:0x00a0:0x0090  SystemAddress:0x60ae6eaa80 ProcessorSocketId:0x1 MemoryControllerId:0x3 ChannelAddress:0x405cdd480 ChannelId:0x0 RankAddress:0x202e6f480 PhysicalRankId:0x0 DimmSlotId:0x0 Row:0x10173 Column:0x298 Bank:0x2 BankGroup:0x0 ChipSelect:0x0 ChipId:0x0)
[13739173.848383] mce: [Hardware Error]: Machine check events logged
[13739173.855908] EDAC skx MC7: HANDLING MCE MEMORY ERROR
[13739173.855910] EDAC skx MC7: CPU 32: Machine Check Event: 0x0 Bank 25: 0x8c00008200800090
[13739173.855911] EDAC skx MC7: TSC 0x0
[13739173.855913] EDAC skx MC7: ADDR 0x60ae6c3400
[13739173.855913] EDAC skx MC7: MISC 0x80008080b987086
[13739173.855914] EDAC skx MC7: PROCESSOR 0:0x606a6 TIME 1751438422 SOCKET 1 APIC 0x80
[13739173.855920] EDAC MC7: 2 CE memory read error on CPU_SrcID#1_MC#3_Chan#0_DIMM#0 (channel:0 slot:0 page:0x60ae6c3 offset:0x400 grain:32 syndrome:0x0 -  err_code:0x0080:0x0090  SystemAddress:0x60ae6c3400 ProcessorSocketId:0x1 MemoryControllerId:0x3 ChannelAddress:0x405cd8700 ChannelId:0x0 RankAddress:0x202e6c700 PhysicalRankId:0x0 DimmSlotId:0x0 Row:0x10173 Column:0xe0 Bank:0x2 BankGroup:0x0 ChipSelect:0x0 ChipId:0x0)

```

## 问题原因

机器出硬件故障，导致 OBServer core 掉。

## 问题的风险及影响

OBServer core 掉。

## 适用版本

OceanBase 数据库所有版本。

## 解决方法及规避方式

硬件故障，无法解决。只能 core 掉之后重启，切换机器。

上一篇

[OBServer 在 PL debug 时发生 core dump](https://www.oceanbase.com/knowledge-base/oceanbase-database-1000000000089875)

下一篇

[dbms_sql.column_value 下标越界访问导致 extend_size 错误引起的 core](https://www.oceanbase.com/knowledge-base/oceanbase-database-20000045548) ![有帮助](https://gw.alipayobjects.com/mdn/ob_asset/afts/img/A*y6ocSqN8cqsAAAAAAAAAAAAAARQnAQ)![无帮助](https://gw.alipayobjects.com/mdn/ob_asset/afts/img/A*BG9IQJyLHF8AAAAAAAAAAAAAARQnAQ)![反馈](https://gw.alipayobjects.com/mdn/ob_asset/afts/img/A*eTWdQKCRKHwAAAAAAAAAAAAAARQnAQ)[AI](https://www.oceanbase.com/obi) 咨询热线