通过内存占用情况,找出oracle的session所对应的program
? ? ?通常情况下,感觉oracle数据库比较慢了,会首先查找AIX操作系统所占内存、CPU最大的process,然后由该process的ID找出对应的oracle session、program,从而进行优化。 ? ? ?先做如下交代: ? ?? ?AIX操作系统操作: 内存排序: ? ? ?ps -ealf|head -1;p
? ? ?通常情况下,感觉oracle数据库比较慢了,会首先查找AIX操作系统所占内存、CPU最大的process,然后由该process的ID找出对应的oracle session、program,从而进行优化。
? ? ?先做如下交代:
? ?? ?AIX操作系统操作:
- 内存排序: ? ? ?ps -ealf|head -1;ps -ealf|sort -rn +9|head -50
- CPU排序: ? ? ??ps aux|head -1;ps aux|sort -rn +2|head -20
- 查找最大资源:ps aux|sort -rn +2|head -20
- gv$process:这里的process是操作系统层面的,也是调试oracle数据库的入口;
- gv$session:这里才进入到oracle会话,查看所对应的program等等。
?? ? ?操作步骤:
? ?? ? ??首先查找所占资源最大的PID所对应的Process的address号:select addr from gv$process where spid in (6423194)
? ? ?? ? ??select?addr?from?gv$process?where?spid?in?(1880090?)
? ??? ? ?然后查找该进程所对应的session,可以查看到对应的username、machine、program等等。
? ??? ? ?? select?*?from?gv$session??where?paddr?in?(select?addr?from?gv$process?where?spid?in?(?1880090))
作者:yichangzyh 发表于2013-7-15 20:19:35 原文链接
阅读:83 评论:0 查看评论
原文地址:通过内存占用情况,找出oracle的session所对应的program, 感谢原作者分享。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

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

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











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.

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.

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.

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

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.

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.

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

Oracle views can be exported through the EXP utility: Log in to the Oracle database. Start the EXP utility, specifying the view name and export directory. Enter export parameters, including target mode, file format, and tablespace. Start exporting. Verify the export using the impdp utility.
