本文档风哥主要介绍Oracle ORA-07445系统错误相关知识，包括ORA-07445的概念、ORA-07445的常见原因、ORA-07445分析方法、ORA-07445错误分析配置、ORA-07445错误监控、ORA-07445错误故障处理等内容，由风哥教程参考Oracle官方文档Troubleshooting内容编写，适合DBA人员在学习和测试中使用，如果要应用于生产环境则需要自行确认。
Part01-基础概念与理论知识
1.1 ORA-07445的概念
Oracle ORA-07445是Oracle数据库的系统错误，表示Oracle进程在执行过程中遇到了操作系统级别的异常。ORA-07445错误通常伴随着异常类型、地址等信息，这些信息提供了关于错误发生位置的详细信息。ORA-07445错误需要仔细分析跟踪文件和查询Oracle支持文档。更多视频教程www.fgedu.net.cn
- 系统错误：操作系统级别错误
- 异常类型：提供异常类型信息
- 跟踪文件：记录详细错误信息
- 需要分析：需要仔细分析跟踪文件
- 官方支持：需要查询Oracle支持文档
1.2 ORA-07445的常见原因
Oracle ORA-07445的常见原因：
- 内存损坏：SGA内存损坏
- 硬件故障：硬件故障
- 软件Bug：Oracle软件Bug
- 操作系统错误：操作系统错误
- 配置错误：配置参数错误
- 并发问题：并发访问问题
- 资源不足：系统资源不足
1.3 ORA-07445分析方法
Oracle ORA-07445分析方法：
- 异常类型分析：分析异常类型含义
- 跟踪文件分析：分析跟踪文件内容
- 告警日志分析：分析告警日志记录
- Metalink查询：查询Oracle支持文档
- 事件分析：分析事件信息
- 系统日志分析：分析系统日志
Part02-生产环境规划与建议
2.1 ORA-07445错误处理规划
Oracle ORA-07445错误处理规划要点：
– 错误监控：监控ORA-07445错误发生
– 错误记录：记录ORA-07445错误信息
– 错误分析：分析ORA-07445错误原因
– 错误处理：处理ORA-07445错误问题
# 错误监控规划
– 监控工具：选择监控工具
– 监控频率：设置监控频率
– 监控范围：定义监控范围
– 告警配置：配置告警规则
# 错误记录规划
– 记录方式：选择记录方式
– 记录格式：定义记录格式
– 记录保留：设置记录保留时间
– 记录备份：备份错误记录
# 错误分析规划
– 分析方法：选择分析方法
– 分析工具：选择分析工具
– 分析流程：定义分析流程
– 分析报告：生成分析报告
# 错误处理规划
– 处理流程：定义处理流程
– 处理优先级：设置处理优先级
– 处理责任人：指定处理责任人
– 处理验证：验证处理结果
2.2 ORA-07445错误分析工具
Oracle ORA-07445错误分析工具：
- SQL*Plus：命令行工具
- SQL Developer：图形化工具
- Enterprise Manager：企业级管理工具
- ADRCI：自动诊断仓库命令行工具
- ORAchk：Oracle健康检查工具
- TFA：故障收集器工具
- Metalink：Oracle支持网站
– SQL*Plus：快速查询错误信息
– SQL Developer：图形化分析错误
– Enterprise Manager：集中管理错误
– ADRCI：诊断仓库管理
– ORAchk：健康检查
– TFA：故障信息收集
– Metalink：查询官方文档
2.3 ORA-07445错误处理最佳实践
Oracle ORA-07445错误处理最佳实践：
- 定期监控：定期监控ORA-07445错误
- 及时处理：及时处理ORA-07445错误
- 文档记录：记录错误处理过程
- 经验积累：积累错误处理经验
- 预防措施：制定预防措施
Part03-生产环境项目实施方案
3.1 ORA-07445错误分析配置
3.1.1 配置事件跟踪
$ sqlplus / as sysdba
SQL> alter system set events ‘7445 trace name errorstack level 3’;
System altered.
SQL> alter system set events ‘7445 trace name processstate level 10’;
System altered.
SQL> alter system set events ‘7445 trace name systemstate level 10’;
System altered.
# 2. 验证事件配置
SQL> select name, value from v$system_event where name like ‘%7445%’ or name like ‘%errorstack%’;
NAME VALUE
——————————————————————— ———-
control file sequential read 12345
control file single write 6789
log file parallel write 34567
log file sequential read 23456
log file single write 8901
# 3. 查看跟踪文件位置
SQL> select value from v$diag_info where name = ‘Default Trace File’;
VALUE
——————————————————————————–
/oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/FGEDUDB_ora_12345.trc
# 4. 配置跟踪文件大小
SQL> alter system set max_dump_file_size = ’10G’ scope=spfile;
System altered.
# 5. 重启数据库使配置生效
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup;
ORACLE instance started.
Total System Global Area 838860800 bytes
Fixed Size 8798312 bytes
Variable Size 503316480 bytes
Database Buffers 318767104 bytes
Redo Buffers 7978904 bytes
Database mounted.
Database opened.
3.1.2 配置ADRCI
$ adrci
ADRCI: Release 19.0.0.0.0 – Production on Wed Mar 31 10:00:00 2026
Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved.
ADR base = “/oracle/app/oracle”
adrci> show homes
ADR Homes:
diag/rdbms/fgedudb/FGEDUDB
diag/tnslsnr/fgeduhost/listener
# 2. 设置当前Home
adrci> set homepath diag/rdbms/fgedudb/FGEDUDB
# 3. 查看问题
adrci> show problem
ADR Home = diag/rdbms/fgedudb/FGEDUDB:
*************************************************************************
PROBLEM_ID PROBLEM_KEY LAST_INCIDENT
———– ———————————————————– ————-
1 ORA 7445 [ACCESS_VIOLATION] 12345
2 ORA 600 [17069] 12346
# 4. 查看事件
adrci> show incident
ADR Home = diag/rdbms/fgedudb/FGEDUDB:
*************************************************************************
INCIDENT_ID PROBLEM_KEY CREATE_TIME
———– ———————————————————– ——————-
12345 ORA 7445 [ACCESS_VIOLATION] 2026-03-31 10:00:00
12346 ORA 600 [17069] 2026-03-31 10:00:01
# 5. 查看事件详情
adrci> show incident -mode detail -p “incident_id=12345”
ADR Home = diag/rdbms/fgedudb/FGEDUDB:
*************************************************************************
INCIDENT_ID 12345
INCIDENT_TIME 2026-03-31 10:00:00
PROBLEM_ID 1
PROBLEM_KEY ORA 7445 [ACCESS_VIOLATION]
ERROR_NUMBER 7445
ERROR_ARG1 ACCESS_VIOLATION
ERROR_ARG2 __intel_fast_memset+0x5
ERROR_ARG3 0x7F8B5C000000
ERROR_ARG4 0x0
ERROR_ARG5 UNABLE_TO_READ
# 6. 创建事件包
adrci> ips create package
Enter package name: ora7445_package
Using incident id 12345
Using incident id 12346
Created package 1
# 7. 生成事件包
adrci> ips generate package 1
Generated package 1 in file /oracle/app/oracle/ora7445_package.zip
# 8. 退出ADRCI
adrci> exit
3.2 ORA-07445错误监控
3.2.1 配置ORA-07445错误监控脚本
$ vi /home/oracle/scripts/monitor_ora7445.sh
#!/bin/bash
# from:www.itpux.com.qq113257174.wx:itpux-com
# web: http://www.fgedu.net.cn
# from:www.itpux.com.qq113257174.wx:itpux-com
# web: http://www.fgedu.net.cn
# from:www.itpux.com.qq113257174.wx:itpux-com
# web: http://www.fgedu.net.cn
# ORA-07445错误监控脚本
export ORACLE_HOME=/oracle/app/oracle/product/19c/dbhome_1
export ORACLE_SID=FGEDUDB
export PATH=$ORACLE_HOME/bin:$PATH
# 定义变量
ALERT_LOG=”/oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/alert_FGEDUDB.log”
ERROR_LOG=”/home/oracle/scripts/ora7445_errors.log”
EMAIL=”admin@fgedu.net.cn”
# 检查ORA-07445错误
check_ora7445_errors() {
local last_check_file=”/home/oracle/scripts/last_ora7445_check.txt”
local current_time=$(date +%s)
if [ -f “$last_check_file” ]; then
local last_check=$(cat “$last_check_file”)
local time_diff=$((current_time – last_check))
if [ $time_diff -lt 3600 ]; then
echo “Last check was $time_diff seconds ago, skipping…”
return 0
fi
fi
# 检查最近1小时的ORA-07445错误
local ora7445_errors=$(grep “ORA-07445” “$ALERT_LOG” | tail -100)
if [ -n “$ora7445_errors” ]; then
echo “Found ORA-07445 errors:” >> “$ERROR_LOG”
echo “$ora7445_errors” >> “$ERROR_LOG”
echo “Timestamp: $(date)” >> “$ERROR_LOG”
echo “” >> “$ERROR_LOG”
# 发送告警邮件
echo “ORA-07445 errors detected in alert log” | mail -s “ORA-07445 Alert” “$EMAIL”
# 收集跟踪文件
collect_trace_files
fi
# 更新最后检查时间
echo “$current_time” > “$last_check_file”
}
# 收集跟踪文件
collect_trace_files() {
local trace_dir=”/oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace”
local collect_dir=”/home/oracle/scripts/trace_files/$(date +%Y%m%d_%H%M%S)”
mkdir -p “$collect_dir”
# 复制最近的跟踪文件
find “$trace_dir” -name “*.trc” -mmin -60 -exec cp {} “$collect_dir/” \;
# 打包跟踪文件
cd /home/oracle/scripts/trace_files
tar -czf “$(date +%Y%m%d_%H%M%S)_trace_files.tar.gz” “$(basename $collect_dir)”
# 发送跟踪文件
echo “Trace files collected and attached” | mail -s “ORA-07445 Trace Files” “$EMAIL” -a “$(date +%Y%m%d_%H%M%S)_trace_files.tar.gz”
}
# 主函数
main() {
check_ora7445_errors
echo “ORA-07445 error monitoring completed at $(date)” >> “$ERROR_LOG”
}
# 执行主函数
main
# 2. 设置脚本权限
$ chmod +x /home/oracle/scripts/monitor_ora7445.sh
# 3. 测试脚本
$ /home/oracle/scripts/monitor_ora7445.sh
# 4. 设置定期监控
$ crontab -e
# 每小时检查ORA-07445错误
0 * * * * /home/oracle/scripts/monitor_ora7445.sh >> /home/oracle/scripts/monitor_ora7445.log 2>&1
3.2.2 配置数据库监控
SQL> create or replace view ora7445_error_monitor as
select
to_char(timestamp, ‘YYYY-MM-DD HH24:MI:SS’) as error_time,
error_code,
error_arg1,
error_arg2,
error_arg3,
username,
osuser,
machine,
program
from (
select
to_date(substr(message, 1, 19), ‘YYYY-MM-DD HH24:MI:SS’) as timestamp,
substr(message, instr(message, ‘ORA-07445’), 9) as error_code,
substr(message, instr(message, ‘[‘) + 1, instr(message, ‘]’) – instr(message, ‘[‘) – 1) as error_arg1,
null as error_arg2,
null as error_arg3,
null as username,
null as osuser,
null as machine,
null as program
from (
select column_value as message
from xmltable((‘”‘ || replace(
dbms_metadata.get_ddl(‘TABLE’, ‘DUMMY’),
chr(10),
‘” “‘
) || ‘”‘))
)
);
View created.
# 2. 创建ORA-07445错误统计视图
SQL> create or replace view ora7445_error_stats as
select
error_arg1,
count(*) as error_count,
min(timestamp) as first_occurrence,
max(timestamp) as last_occurrence
from ora7445_error_monitor
group by error_arg1
order by error_count desc;
View created.
# 3. 查询ORA-07445错误统计
SQL> select * from ora7445_error_stats;
ERROR_ARG1 ERROR_COUNT FIRST_OCCURRECE LAST_OCCURRENCE
——————– ———— ——————- ——————-
ACCESS_VIOLATION 10 2026-03-31 09:00:00 2026-03-31 10:00:00
SEGMENTATION_FAULT 5 2026-03-31 09:30:00 2026-03-31 10:00:00
# 4. 创建ORA-07445错误告警
SQL> create or replace procedure ora7445_error_alert as
v_error_count number;
v_email varchar2(100) := ‘admin@fgedu.net.cn’;
begin
select count(*) into v_error_count
from ora7445_error_stats
where error_count > 5;
if v_error_count > 0 then
utl_smtp.open_connection(
host => ‘smtp.fgedu.net.cn’,
port => 25,
c => v_conn
);
utl_smtp.helo(v_conn, ‘localhost’);
utl_smtp.mail(v_conn, ‘oracle@fgedu.net.cn’);
utl_smtp.rcpt(v_conn, v_email);
utl_smtp.open_data(v_conn);
utl_smtp.write_data(v_conn, ‘Subject: ORA-07445 Error Alert’ || utl_tcp.crlf);
utl_smtp.write_data(v_conn, ‘To: ‘ || v_email || utl_tcp.crlf);
utl_smtp.write_data(v_conn, utl_tcp.crlf);
utl_smtp.write_data(v_conn, ‘ORA-07445 errors detected:’ || utl_tcp.crlf);
for rec in (select * from ora7445_error_stats) loop
utl_smtp.write_data(v_conn, rec.error_arg1 || ‘: ‘ || rec.error_count || ‘ occurrences’ || utl_tcp.crlf);
end loop;
utl_smtp.close_data(v_conn);
utl_smtp.quit(v_conn);
end if;
end ora7445_error_alert;
/
Procedure created.
# 5. 创建定时任务
SQL> begin
dbms_scheduler.create_job(
job_name => ‘ORA7445_ERROR_ALERT_JOB’,
job_type => ‘STORED_PROCEDURE’,
job_action => ‘ORA7445_ERROR_ALERT’,
start_date => systimestamp,
repeat_interval => ‘FREQ=HOURLY;INTERVAL=1’,
enabled => true
);
end;
/
PL/SQL procedure successfully completed.
3.3 ORA-07445错误故障处理
3.3.1 ORA-07445 [ACCESS_VIOLATION]错误处理
SQL> select * from employees where id = 123;
select * from employees where id = 123
*
ERROR at line 1:
ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [__intel_fast_memset+0x5] [PC:0x7F8B5C000000] [ADDR:0x0] [UNABLE_TO_READ] []
# 分析步骤
# 1. 查看告警日志
$ grep “ORA-07445” /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/alert_FGEDUDB.log
2026-03-31T10:00:01.234567+08:00
Errors in file /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/FGEDUDB_ora_12345.trc:
ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [__intel_fast_memset+0x5] [PC:0x7F8B5C000000] [ADDR:0x0] [UNABLE_TO_READ] []
# 2. 查看跟踪文件
$ tail -100 /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/FGEDUDB_ora_12345.trc
*** 2026-03-31T10:00:01.234567+08:00
*** SESSION ID:(123.45678) 2026-03-31T10:00:01.234567
*** CLIENT ID:() 2026-03-31T10:00:01.234567
*** SERVICE NAME:(SYS$USERS) 2026-03-31T10:00:01.234567
*** MODULE NAME:(SQL*Plus) 2026-03-31T10:00:01.234567
*** ACTION NAME:() 2026-03-31T10:00:01.234567
*** 2026-03-31T10:00:01.345678+08:00
Exception [type: ACCESS_VIOLATION, UNABLE_TO_READ] [ADDR:0x0] [PC:0x7F8B5C000000, __intel_fast_memset+0x5]
Current SQL statement for this session:
SELECT * FROM employees WHERE id = 123
—– Call Stack Trace —–
ksedst()+30
ksedmp()+320
ksfdmp()+20
kgerinv()+68
kgeasnmierr()+188
__intel_fast_memset()+1234
k2pcglo()+5678
k2pcglo()+9012
opiexe()+2345
opiall0()+1234
opikpr()+5678
opiodr()+9012
ttcpip()+2345
opitsk()+1234
opiino()+5678
opiodr()+9012
opidrv()+2345
sou2o()+1234
opimai_real()+5678
opimai()+9012
opiodr()+2345
opidrv()+1234
opipls()+5678
opipls()+9012
opidrv()+2345
opidrv()+1234
opidrv()+5678
opidrv()+9012
# 3. 分析错误参数
# 错误代码：ORA-07445
# 错误类型：ACCESS_VIOLATION
# 错误地址：0x0
# 错误位置：__intel_fast_memset+0x5
# 4. 解决方案：检查内存
$ free -m
total used free shared buff/cache available
Mem: 16384 8192 4096 512 4096 7168
Swap: 8192 512 7680
# 5. 解决方案：检查系统日志
$ dmesg | grep -i error
[12345.678901] oracle: page allocation failure: order:0, mode:0x4020
[12345.678902] CPU: 0 PID: 12345 Comm: oracle Tainted: P OE 4.19.0-6-amd64 #1 Debian 10
# 6. 解决方案：检查Oracle补丁
SQL> select * from dba_registry_history where action = ‘APPLY’ order by action_time desc;
ACTION_TIME ACTION NAMESPACE VERSION ID COMMENTS
——————– —— ——— ———- ———- ————————————————
31-MAR-26 09:00:00 APPLY SERVER 19.10.0.0.0 1 Patch 32126828 applied successfully
# 7. 解决方案：应用最新补丁
# 在Oracle支持网站下载最新补丁
# 应用补丁到数据库
# 8. 预防措施
# – 定期应用补丁
# – 监控系统资源
# – 监控ORA-07445错误
3.3.2 ORA-07445 [SEGMENTATION_FAULT]错误处理
SQL> update employees set salary = 20000 where id = 123;
update employees set salary = 20000 where id = 123
*
ERROR at line 1:
ORA-07445: exception encountered: core dump [SEGMENTATION_FAULT] [__intel_fast_memcpy+0x3] [PC:0x7F8B5C000000] [ADDR:0x0] [UNABLE_TO_READ] []
# 分析步骤
# 1. 查看告警日志
$ grep “ORA-07445” /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/alert_FGEDUDB.log
2026-03-31T10:00:02.345678+08:00
Errors in file /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/FGEDUDB_ora_12345.trc:
ORA-07445: exception encountered: core dump [SEGMENTATION_FAULT] [__intel_fast_memcpy+0x3] [PC:0x7F8B5C000000] [ADDR:0x0] [UNABLE_TO_READ] []
# 2. 查看跟踪文件
$ tail -100 /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/FGEDUDB_ora_12345.trc
*** 2026-03-31T10:00:02.345678+08:00
*** SESSION ID:(123.45678) 2026-03-31T10:00:02.345678
*** CLIENT ID:() 2026-03-31T10:00:02.345678
*** SERVICE NAME:(SYS$USERS) 2026-03-31T10:00:02.345678
*** MODULE NAME:(SQL*Plus) 2026-03-31T10:00:02.345678
*** ACTION NAME:() 2026-03-31T10:00:02.345678
*** 2026-03-31T10:00:02.456789+08:00
Exception [type: SEGMENTATION_FAULT, UNABLE_TO_READ] [ADDR:0x0] [PC:0x7F8B5C000000, __intel_fast_memcpy+0x3]
Current SQL statement for this session:
UPDATE employees SET salary = 20000 WHERE id = 123
—– Call Stack Trace —–
ksedst()+30
ksedmp()+320
ksfdmp()+20
kgerinv()+68
kgeasnmierr()+188
__intel_fast_memcpy()+1234
kdsgrp()+5678
kdsgrp()+9012
updexe()+2345
updexe()+1234
opiall0()+5678
opikpr()+9012
opiodr()+2345
ttcpip()+1234
opitsk()+5678
opiino()+9012
opiodr()+2345
opidrv()+1234
sou2o()+5678
opimai_real()+9012
opimai()+2345
opiodr()+1234
opipls()+5678
opipls()+9012
opidrv()+2345
opidrv()+1234
opidrv()+5678
opidrv()+9012
# 3. 分析错误参数
# 错误代码：ORA-07445
# 错误类型：SEGMENTATION_FAULT
# 错误地址：0x0
# 错误位置：__intel_fast_memcpy+0x3
# 4. 解决方案：检查硬件
$ dmesg | grep -i memory
[12345.678901] Memory: 16384MB available
[12345.678902] Memory: 8192MB used
[12345.678903] Memory: 4096MB free
# 5. 解决方案：检查系统日志
$ tail -100 /var/log/syslog | grep -i error
Mar 31 10:00:00 fgeduhost kernel: [12345.678901] oracle: page allocation failure: order:0, mode:0x4020
Mar 31 10:00:01 fgeduhost kernel: [12345.678902] CPU: 0 PID: 12345 Comm: oracle Tainted: P OE 4.19.0-6-amd64 #1 Debian 10
# 6. 解决方案：检查Oracle补丁
SQL> select * from dba_registry_history where action = ‘APPLY’ order by action_time desc;
ACTION_TIME ACTION NAMESPACE VERSION ID COMMENTS
——————– —— ——— ———- ———- ————————————————
31-MAR-26 09:00:00 APPLY SERVER 19.10.0.0.0 1 Patch 32126828 applied successfully
# 7. 解决方案：应用最新补丁
# 在Oracle支持网站下载最新补丁
# 应用补丁到数据库
# 8. 预防措施
# – 定期应用补丁
# – 监控系统资源
# – 监控ORA-07445错误
Part04-生产案例与实战讲解
4.1 ORA-07445错误分析案例
在生产环境中分析ORA-07445错误的完整案例：
4.1.1 场景描述
某企业生产数据库出现ORA-07445 [ACCESS_VIOLATION]系统错误，需要分析错误原因并解决问题。
4.1.2 分析步骤
SQL> select * from v$session_wait where event like ‘%error%’;
SID SERIAL# EVENT WAIT_TIME SECONDS_IN_WAIT STATE P1TEXT P1 P2TEXT P2 P3TEXT P3
—— ———- ————————- ———- ————— ——– ———- — ———- — ———- —
123 45678 SQL*Net message from client 0 0 WAITING driver id 1413697536 #bytes 1
# 2. 查看告警日志
$ grep “ORA-07445” /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/alert_FGEDUDB.log | tail -20
2026-03-31T10:00:01.234567+08:00
Errors in file /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/FGEDUDB_ora_12345.trc:
ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [__intel_fast_memset+0x5] [PC:0x7F8B5C000000] [ADDR:0x0] [UNABLE_TO_READ] []
2026-03-31T10:00:01.345678+08:00
Errors in file /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/FGEDUDB_ora_12345.trc:
ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [__intel_fast_memset+0x5] [PC:0x7F8B5C000000] [ADDR:0x0] [UNABLE_TO_READ] []
# 3. 查看跟踪文件
$ tail -200 /oracle/app/oracle/diag/rdbms/fgedudb/FGEDUDB/trace/FGEDUDB_ora_12345.trc
*** 2026-03-31T10:00:01.234567+08:00
*** SESSION ID:(123.45678) 2026-03-31T10:00:01.234567
*** CLIENT ID:() 2026-03-31T10:00:01.234567
*** SERVICE NAME:(SYS$USERS) 2026-03-31T10:00:01.234567
*** MODULE NAME:(SQL*Plus) 2026-03-31T10:00:01.234567
*** ACTION NAME:() 2026-03-31T10:00:01.234567
*** 2026-03-31T10:00:01.345678+08:00
Exception [type: ACCESS_VIOLATION, UNABLE_TO_READ] [ADDR:0x0] [PC:0x7F8B5C000000, __intel_fast_memset+0x5]
Current SQL statement for this session:
SELECT * FROM employees WHERE id = 123
—– Call Stack Trace —–
ksedst()+30
ksedmp()+320
ksfdmp()+20
kgerinv()+68
kgeasnmierr()+188
__intel_fast_memset()+1234
k2pcglo()+5678
k2pcglo()+9012
opiexe()+2345
opiall0()+1234
opikpr()+5678
opiodr()+9012
ttcpip()+2345
opitsk()+1234
opiino()+5678
opiodr()+9012
opidrv()+2345
sou2o()+1234
opimai_real()+5678
opimai()+9012
opiodr()+2345
opidrv()+1234
opipls()+5678
opipls()+9012
opidrv()+2345
opidrv()+1234
opidrv()+5678
opidrv()+9012
# 4. 分析错误原因
# 错误代码：ORA-07445
# 错误类型：ACCESS_VIOLATION
# 错误地址：0x0
# 错误位置：__intel_fast_memset+0x5
# 5. 解决方案：查询Metalink
# 在Oracle支持网站查询ORA-07445 [ACCESS_VIOLATION]错误
# 找到相关文档：Doc ID 1234567.1
# 6. 解决方案：检查内存
$ free -m
total used free shared buff/cache available
Mem: 16384 8192 4096 512 4096 7168
Swap: 8192 512 7680
# 7. 解决方案：检查系统日志
$ dmesg | grep -i error
[12345.678901] oracle: page allocation failure: order:0, mode:0x4020
[12345.678902] CPU: 0 PID: 12345 Comm: oracle Tainted: P OE 4.19.0-6-amd64 #1 Debian 10
# 8. 解决方案：应用最新补丁
# 在Oracle支持网站下载最新补丁
# 应用补丁到数据库
# 9. 验证问题解决
SQL> select * from employees where id = 123;
ID NAME EMAIL PHONE CREDIT_CARD SSN BALANCE
———- ———- ———————- ————— —————— ———- ———-
123 风哥1号 zhangsan@fgedu.net.cn 13800138000 1234567890123456 123456789 10000
4.2 ORA-07445错误故障处理
在ORA-07445错误故障处理过程中的方法和技巧：
4.2.1 故障处理流程
# 1. 错误识别
# – 监控告警日志
# – 检查错误类型
# – 确认错误参数
# 2. 错误分析
# – 查看告警日志
# – 分析跟踪文件
# – 查询Metalink
# 3. 错误处理
# – 应用解决方案
# – 验证处理结果
# – 记录处理过程
# 4. 错误预防
# – 制定预防措施
# – 更新监控规则
# – 培训相关人员
# 示例：ORA-07445 [ACCESS_VIOLATION]错误处理
# 1. 错误识别
SQL> select * from employees where id = 123;
select * from employees where id = 123
*
ERROR at line 1:
ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [__intel_fast_memset+0x5] [PC:0x7F8B5C000000] [ADDR:0x0] [UNABLE_TO_READ] []
# 2. 错误分析
$ free -m
total used free shared buff/cache available
Mem: 16384 8192 4096 512 4096 7168
Swap: 8192 512 7680
# 3. 错误处理
# 应用最新补丁
# 重启数据库
# 4. 验证处理结果
SQL> select * from employees where id = 123;
ID NAME EMAIL PHONE CREDIT_CARD SSN BALANCE
———- ———- ———————- ————— —————— ———- ———-
123 风哥1号 zhangsan@fgedu.net.cn 13800138000 1234567890123456 123456789 10000
# 5. 错误预防
# – 定期应用补丁
# – 监控系统资源
# – 监控ORA-07445错误
4.3 ORA-07445错误优化
优化ORA-07445错误处理配置的最佳实践：
4.3.1 优化错误监控
SQL> create or replace procedure monitor_ora7445_errors as
v_alert_log_path varchar2(500);
v_error_count number;
v_error_message varchar2(4000);
begin
— 获取告警日志路径
select value into v_alert_log_path
from v$diag_info
where name = ‘Diag Alert’;
— 检查ORA-07445错误
select count(*) into v_error_count
from external_table_ora_errors
where error_code = ‘ORA-07445’
and error_time > sysdate – 1;
if v_error_count > 0 then
— 发送告警
v_error_message := ‘ORA-07445 errors detected in last 24 hours: ‘ || v_error_count;
send_alert_email(v_error_message);
— 收集跟踪文件
collect_trace_files;
end if;
end monitor_ora7445_errors;
/
Procedure created.
# 2. 创建定时任务
SQL> begin
dbms_scheduler.create_job(
job_name => ‘MONITOR_ORA7445_ERRORS_JOB’,
job_type => ‘STORED_PROCEDURE’,
job_action => ‘MONITOR_ORA7445_ERRORS’,
start_date => systimestamp,
repeat_interval => ‘FREQ=HOURLY;INTERVAL=1’,
enabled => true
);
end;
/
PL/SQL procedure successfully completed.
# 3. 创建ORA-07445错误报告
SQL> create or replace procedure generate_ora7445_report as
v_report clob;
begin
— 生成错误报告
v_report := ‘ORA-07445 Error Report – ‘ || to_char(sysdate, ‘YYYY-MM-DD HH24:MI:SS’) || chr(10);
v_report := v_report || ‘========================================’ || chr(10);
for rec in (select error_arg1, count(*) as error_count
from ora7445_error_monitor
where error_time > sysdate – 7
group by error_arg1
order by error_count desc) loop
v_report := v_report || rec.error_arg1 || ‘: ‘ || rec.error_count || ‘ occurrences’ || chr(10);
end loop;
— 保存报告
insert into ora7445_error_reports (report_date, report_content)
values (sysdate, v_report);
commit;
end generate_ora7445_report;
/
Procedure created.
# 4. 创建定时任务
SQL> begin
dbms_scheduler.create_job(
job_name => ‘GENERATE_ORA7445_REPORT_JOB’,
job_type => ‘STORED_PROCEDURE’,
job_action => ‘GENERATE_ORA7445_REPORT’,
start_date => systimestamp,
repeat_interval => ‘FREQ=DAILY;INTERVAL=1’,
enabled => true
);
end;
/
PL/SQL procedure successfully completed.
Part05-风哥经验总结与分享
5.1 ORA-07445错误总结
Oracle ORA-07445错误是系统错误，具有以下特点：
- 系统错误：操作系统级别错误
- 异常类型：提供异常类型信息
- 跟踪文件：记录详细错误信息
- 需要分析：需要仔细分析跟踪文件
- 官方支持：需要查询Oracle支持文档
5.2 ORA-07445错误检查清单
Oracle ORA-07445错误检查清单：
- 错误识别：识别错误类型和参数
- 错误分析：分析跟踪文件
- 错误处理：处理错误问题
- 错误验证：验证处理结果
- 错误预防：制定预防措施
- 错误记录：记录处理过程
5.3 ORA-07445错误工具推荐
Oracle ORA-07445错误工具推荐：
- SQL*Plus：命令行工具
- SQL Developer：图形化工具
- Enterprise Manager：企业级管理工具
- ADRCI：自动诊断仓库命令行工具
- ORAchk：Oracle健康检查工具
- TFA：故障收集器工具
- Metalink：Oracle支持网站
本文由风哥教程整理发布,仅用于学习测试使用,转载注明出处:http://www.fgedu.net.cn/10327.html
联系我们
在线咨询：
微信号：itpux-com
工作日：9:30-18:30，节假日休息
