Home Database Mysql Tutorial Oracle会话和进程数的监控

Oracle会话和进程数的监控

Jun 07, 2016 pm 05:40 PM
oracle process session

背景:先前在生产库上配置了oracle监控,每5分钟尝试连接一次数据库,若连接失败则通过nagios+fetion自动报警,此配置参考文章:http://ylw6006.blog.51cto.com/4

背景:先前在生产库上配置了oracle监控,每5分钟尝试连接一次数据库,香港虚拟主机,若连接失败则通过nagios+fetion自动报警,此配置参考文章:

早晨收到报警信息后,香港虚拟主机,登陆数据库执行ps -ef查看oracle的后台进程都在,使用conn /as sysdba的方式登陆数据库,提示连接到空闲的实例,使用easy connect 方式连接则报oracle实例无法分配内存,从报错提示上看,就像oracle数据库实例未打开的状态!分析alert日志不断出现如下错误信息:
Process J002 died, see its trace file
kkjcre1p: unable to spawn jobq slave process
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_cjq0_18577.trc:

trace文件摘要信息如下:
*** 2012-07-26 10:20:31.068
Process J002 is dead (pid=13857 req_ver=1136 cur_ver=1136 state=KSOSP_SPAWNED).

*** 2012-07-26 10:20:32.069
Process J002 is dead (pid=13876 req_ver=1594 cur_ver=1594 state=KSOSP_SPAWNED).

google查询一番后,发现大部分描述和oracle的进程数设置有关,又或者是内存不足引起!于是在oracle 10g环境下测试,线上数据库环境为11.2.0.3

一:设置processes初始化参数值为20,香港服务器,重启数据库后,已经占用19个进程

新的会话连接,则报连接到空闲的实例,alert日志则出现相应的报错

refer: ?uid=854&do=blog&id=84

二:于是想到监控oracle的进程和会话数来进一步确定问题
1:首先要对用户进行显示授权,否则后面创建存储过程编译将会报错

2:建表,用来存储结果

  • Table created. 
  • 3:创建存储过程,将数据插入表

    4:创建任务

    5:测试效果

    6:如果要删除任务,则运行下列的命令,145代表user_jobs视图中的job列

    三:使用nagios+fetion,定时去监控会话和进程数
    1:创建监控脚本,该脚本放任务计划中运行,每2分钟自动执行

    EOF

    2:创建第二脚本,用来处理前面监控脚本的日志输出,将结果返回给监控服务器

    四:实际效果
    [root@server198 ~]# /usr/local/nagios/libexec/check_nrpe -H 192.168.1.240 -c check_oracle_session
    Current session is 138,process is 153

    五:后期观察结果,估计和内存问题相关
    [oracle@server240 ~]$ sar -r |grep 10:20
    10:20:02 AM   3481492  21195164     85.89    675584  13661448   3683012    413552     10.10     
    [oracle@server240 ~]$ sar -r |grep 04:40
    04:40:01 PM   2076748  22599908     91.58    734088  14581728   4048864     47700      1.16

    本文出自 “斩月” 博客,谢绝转载!

    Statement of this Website
    The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

    Hot AI Tools

    Undresser.AI Undress

    Undresser.AI Undress

    AI-powered app for creating realistic nude photos

    AI Clothes Remover

    AI Clothes Remover

    Online AI tool for removing clothes from photos.

    Undress AI Tool

    Undress AI Tool

    Undress images for free

    Clothoff.io

    Clothoff.io

    AI clothes remover

    Video Face Swap

    Video Face Swap

    Swap faces in any video effortlessly with our completely free AI face swap tool!

    Hot Tools

    Notepad++7.3.1

    Notepad++7.3.1

    Easy-to-use and free code editor

    SublimeText3 Chinese version

    SublimeText3 Chinese version

    Chinese version, very easy to use

    Zend Studio 13.0.1

    Zend Studio 13.0.1

    Powerful PHP integrated development environment

    Dreamweaver CS6

    Dreamweaver CS6

    Visual web development tools

    SublimeText3 Mac version

    SublimeText3 Mac version

    God-level code editing software (SublimeText3)

    What to do if the oracle can't be opened What to do if the oracle can't be opened Apr 11, 2025 pm 10:06 PM

    Solutions to Oracle cannot be opened include: 1. Start the database service; 2. Start the listener; 3. Check port conflicts; 4. Set environment variables correctly; 5. Make sure the firewall or antivirus software does not block the connection; 6. Check whether the server is closed; 7. Use RMAN to recover corrupt files; 8. Check whether the TNS service name is correct; 9. Check network connection; 10. Reinstall Oracle software.

    How to solve the problem of closing oracle cursor How to solve the problem of closing oracle cursor Apr 11, 2025 pm 10:18 PM

    The method to solve the Oracle cursor closure problem includes: explicitly closing the cursor using the CLOSE statement. Declare the cursor in the FOR UPDATE clause so that it automatically closes after the scope is ended. Declare the cursor in the USING clause so that it automatically closes when the associated PL/SQL variable is closed. Use exception handling to ensure that the cursor is closed in any exception situation. Use the connection pool to automatically close the cursor. Disable automatic submission and delay cursor closing.

    How to create cursors in oracle loop How to create cursors in oracle loop Apr 12, 2025 am 06:18 AM

    In Oracle, the FOR LOOP loop can create cursors dynamically. The steps are: 1. Define the cursor type; 2. Create the loop; 3. Create the cursor dynamically; 4. Execute the cursor; 5. Close the cursor. Example: A cursor can be created cycle-by-circuit to display the names and salaries of the top 10 employees.

    How to stop oracle database How to stop oracle database Apr 12, 2025 am 06:12 AM

    To stop an Oracle database, perform the following steps: 1. Connect to the database; 2. Shutdown immediately; 3. Shutdown abort completely.

    What to do if the oracle log is full What to do if the oracle log is full Apr 12, 2025 am 06:09 AM

    When Oracle log files are full, the following solutions can be adopted: 1) Clean old log files; 2) Increase the log file size; 3) Increase the log file group; 4) Set up automatic log management; 5) Reinitialize the database. Before implementing any solution, it is recommended to back up the database to prevent data loss.

    What steps are required to configure CentOS in HDFS What steps are required to configure CentOS in HDFS Apr 14, 2025 pm 06:42 PM

    Building a Hadoop Distributed File System (HDFS) on a CentOS system requires multiple steps. This article provides a brief configuration guide. 1. Prepare to install JDK in the early stage: Install JavaDevelopmentKit (JDK) on all nodes, and the version must be compatible with Hadoop. The installation package can be downloaded from the Oracle official website. Environment variable configuration: Edit /etc/profile file, set Java and Hadoop environment variables, so that the system can find the installation path of JDK and Hadoop. 2. Security configuration: SSH password-free login to generate SSH key: Use the ssh-keygen command on each node

    Oracle's Role in the Business World Oracle's Role in the Business World Apr 23, 2025 am 12:01 AM

    Oracle is not only a database company, but also a leader in cloud computing and ERP systems. 1. Oracle provides comprehensive solutions from database to cloud services and ERP systems. 2. OracleCloud challenges AWS and Azure, providing IaaS, PaaS and SaaS services. 3. Oracle's ERP systems such as E-BusinessSuite and FusionApplications help enterprises optimize operations.

    How to create oracle dynamic sql How to create oracle dynamic sql Apr 12, 2025 am 06:06 AM

    SQL statements can be created and executed based on runtime input by using Oracle's dynamic SQL. The steps include: preparing an empty string variable to store dynamically generated SQL statements. Use the EXECUTE IMMEDIATE or PREPARE statement to compile and execute dynamic SQL statements. Use bind variable to pass user input or other dynamic values ​​to dynamic SQL. Use EXECUTE IMMEDIATE or EXECUTE to execute dynamic SQL statements.

    See all articles