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If you do not know the system in Oracle, you can use the following method to retrieve the password of the sys User: first, an ordinary user is added to the database: execute the following command in SQL * Plus: SQLconnectassysdba (you can also connect to SQLconnectinternal in the following way) SQLalterusersysidentifiedbysys; (after the carriage return, the user sys Password If you do not know the system in
Basic Oracle Tutorial: objects under sys cannot be exported in expdp. Basic Oracle Tutorial: objects under sys cannot be exported in expdp. Objects in sys users cannot be exported. SQL> select owner, segment_name, tablespace_name from dba_segments where tablespacE_name = 'users '; OWNER SEGMENT_NAME TABLESPACE_NAME--------------------------------------------
Differences between sys and system users 1) The most important difference is that the importance of stored data is different. Base tables and views of all oracle data dictionaries in sys are stored in sys users. These base tables and views are crucial for oracle operation and are maintained by the database, no user can change it manually.
in the Linux distribution, there is a/proc/directory, some also called it the proc file system. In this directory, there are special files that can be used not only to reflect the current state of the kernel and to view hardware information, but also to allow users to modify the contents of the kernel to adjust the current working state of the kernels, such as files under the/proc/sys/subdirectory. Unlike other directories in the/proc/directory, file
,Echo/sbin/mdev>/proc/sys/kernel/hotplugThen, the kernel calls the user space application/sbin/mdev passed in the above sentence to process the corresponding information when the device changes, the mdev application then adds or deletes devices in the/dev directory. You can refer to add the hotplug function to the kernel to monitor uevent information.Another useful part of mdev is that it can dynamically organize registered devices through the proc an
Python system modules include sys, OS, glob, socket, threading, _ thread, queue, time, timeit, subprocess, Multiprocessing, signal, select, shutil, and tempfile. Most system-level interfaces are concentrated in the SYS and OS modules. The SYS module includes: Platform and version information, such as SYS. Pla
) | Pwd$sid.ora (Windows) is present The basic order of Oracle Permissions authentication is this:The Sqlnet.authentication_services setting value is used to determine whether to use OS authentication or password file authentication.If you use password file authentication, you should look at the following two conditions:If the Remote_login_passwordfile parameter is set to not none,and the password file exists, you can normally use password file authentication, otherwise it will fail. Sqlnet. Aut
All TCP/IP tuning parameters are located in the/proc/sys/net/directory. For example, here are some of the most important tuning parameters, followed by their meanings: 1,/proc/sys/net/core/rmem_max -the largest TCP data receive buffer 2,/proc/sys/net/core/wmem_max -the largest TCP data send buffer3,/proc/sys/net/ipv4
Differences between Oracle SYS and system users, sysdba and sysoper system permissions, and sysdba and DBA roles) Differences between sys and system users1) The most important difference is that the importance of stored data is different.Base tables and views of all ORACLE data dictionaries in SYS are stored in SYS
another article: http://www.linuxfly.org/post/320/?1. Pre- clean memory usage ?Free-m2. start cleaning up ??Echo 1 >/proc/sys/vm/drop_caches3. memory usage after cleanup ?Free-m4. complete !To view the number of memory bars command:Dmidecode?|? Grep?-a16? "Memory?" device$ " ?????++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++??????# Sync# echo 1 >/proc/sys/vm/drop_caches?? Echo 2 >/proc/
Author: skate Time: 2012/02/22 Manually release Linux memory --/proc/sys/Vm/drop_cache Repost an article Linux memory View: [Root @ localhost 0.1.0] # Free-mTotal used free shared buffers cachedMem: 4032 694 3337 0 0 25 It should be noted that the used of mem is free + buffers + cached. In some cases, cached occupies a lot of resources and the value is incorrect. In fact, it does not affect actual use, the subsequent sections describe how to clear
Analysis of Python OS and sys modules, pythonossys Module The official explanation of the OS and sys modules is as follows: OS: This module provides a portable way of using operating system dependent functionality. This module provides a convenient way to use operating system functions. Sys: This module provides access to some variables used or maintained by the
Day6 SYS module and day6sys Module SYS module Provides operations related to the Python Interpreter: (1)Sys. argv command line parametersListThe first element is the program path. >>> Sys. argv[''] (2)Sys. exit (n) exit the program. exit (0) (3)
Why the command cannot be executed normally after Python IDLE reload (sys) Generally, most people ExecuteReload (sys)This statement is only used to modify the default Character Set of Python, that is, to callSys. setdefaultencoding (). However, if you executeReload (sys), And the subsequent commands cannot be executed normally. I was helpless when I first encoun
Oracle forgot the sys/system/scott user password. How can I reset the oracle password ?, Scottoracle I used the oracle database today, but I found that I forgot my previous password. I did not enter the correct password. So I found some information on the Internet, fixed the problem, and shared it with you. I. Problems encountered: 1. Forget the logon password of a user except SYS and SYSTEM. 2. Forget the
------------------------------------------------------------------------------------------------------The SYS module provides a number of functions and variables to handle different parts of the Python runtime environment.Handling command-line argumentsAfter the interpreter starts, the argv list contains all the parameters passed to the script, and the first element of the list is the name of the script itself.-----------------------------------------
Ansi. SYS is a very useful device driver in MS-DOS, and we can use it to achieve unexpected results. So, how does it work? Let me introduce you to the following. Note: In this section, uppercase letters in the syntax and ANSI escape sequences must be typed as-is. Ansi. SYS defines a series of functions that are used to change display graphics, control cursor movement, and key redefinition, ANSI. The
This subdirectory contains specific file system, file handle, Inode, dentry and quota information.1,/proc/sys/fs/aio-max-nrAIO-MAX-NR allows the maximum VALUE/PROC/SYS/FS/AIO-NR can grow to.2,/proc/sys/fs/aio-nrAio-nr shows the current system-wide number of asynchronous IO requests.3,/proc/sys/fs/bio_netoops4,/proc/
In the Python programming language, there are many special application methods that deserve our taste. Here we will give you a detailed analysis of how to use Python sys. arg, hoping to provide some help for your friends to facilitate their use in applications. Python sys. arg is used to obtain the command line parameters. sys. argv [0] indicates the file path of
Tags: A. Forget the login password for users other than SYS and system users. Login with SYS (or system) User: CONN Sys/pass_word as SYSDBA; Use the following statement to modify the user's password: ALTER user user_name identified by "Newpass"; Note: Passwords are not all numbers. and cannot be a number start. Otherwise it will appear: ORA-00988: Password mi
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