Subject: [original] analyze hiberfil. sys
Prepared by: microdebug
Time: 2010-11-09,17: 34: 42
Chain: http://bbs.pediy.com/showthread.php? T = 124505
I was scared when I took this note, because I thought it was useless. But in fact, it is still very valuable in many partial or confidential fields. In view of the small amount of data in China, I wrote a note to share it with you.
Analyze hibernation file
IntroductionWhat's hibernation file?The hibernat
First, the definitionThe SYS module provides a number of functions and variables to handle different parts of the Python runtime environment.Second, commonly used functions1 sys.argv command line argument list, the first element is the program itself path 2 sys.exit (n) exit the program, exit normally exits (0)3 sys.version Get version information for Python interpreter 4 sys.maxint Maximum int value 5 sys.path returns
1)/proc/sys/vm/block_dumpThis file indicates whether block debug mode is turned on to record all read-write and dirty block writeback actions.Default setting: 0, disable block debug mode2)/proc/sys/vm/dirty_background_ratioThis file represents the percentage of dirty data that reaches the overall system memory, triggering the pdflush process to write dirty data back to disk.Default setting: 103)/proc/
SYS and SYSTEM user differences
1 The most important difference, the importance of storing data is different
SYS the base tables and views of all Oracle's data dictionaries are stored in the SYS user, which is critical to the operation of Oracle and is maintained by the database itself and cannot be manually changed by any user. The
Differences between SYS and SYSTEM, DBA and SYSDBA: SYS and SYSTEM: 1. the role of sys is sysdba system and sysoper 2. sys has the create database permission. system does not have this permission. 3. sys can create and modify the base table and view of the data dictionary. s
This article mainly introduces exit, return, and sys in Python. such as exit (). This article is a summary of the actual project. For more information, see the following question: String identifier. modify the idcheck of Example 6-1. py script to detect the identifier with a length of one and identify the Python keyword. For the latter requirement, you can use the keyword module (especially the keyword. kelist) to help you.
My initial code is:
The
Developers reported that sometimes they can connect to the server, sometimes they cannot connect to the server, and the connection is broken frequently. This problem has plagued them for a month or two. By using Wireshark to capture packets on the server, it is indeed as the developer said: When the client requests the server to establish a TCP connection, it sends the SYS packet to the server, however, the server does not respond to the
[Python] print vs sys. stdout. write, pythonsys. stdoutI just saw it in the project before. I didn't pay much attention to it. I just watched the python learning manual with the object. I saw this part and studied it. Python version 2.7.xos win7Print is generally used to print the information directly to the standard output when executing the script, that is, the console print is a method in python _ builtin _ to see its definition.
def print(stream):
Python: Introduction to judging the current operating system type and OS/sys/platform module, pythonplatformDetermine the operating system type
# Coding = utf-8import platformdef TestPlatform (): print ("---------- Operation System --------------------------") # Get the Python version print platform. python_version () # obtain the executable program structure of the operating system, ('32bit ', 'windowsp') print platform. architecture () # Name of the
Python3 OS module sys module hashlib module, python3os Module
1 '''2 OS Module 3 very important module 4 '''5 import OS 6 # print (OS. getcwd () # Get the current working directory 7 # OS. chdir (r 'pathname') # change the current working directory 8 # print (OS. curdir) # returns the current directory ,'. '9 # print (OS. pardir) # obtain the parent directory name (string) of the current directory ),'.. '10 # OS. makedirs ('. \ sss \ sss') # generat
ORACLE 11G trigger debug record Error: PLS-00201: identifier 'sys. DBMS_SYSTEM 'must be declared
1. The trigger content is as follows:
CREATE OR REPLACE TRIGGER"LOGON_DENIED_TO_ALERT"AFTER servererror ON DATABASEDECLAREmessage VARCHAR2(168);ip VARCHAR2(15);v_os_user VARCHAR2(80);v_module VARCHAR2(50);v_action VARCHAR2(50);v_pid VARCHAR2(10);v_sid NUMBER;v_program VARCHAR2(48);BEGINIF(ora_is_servererror(1017)) THEN-- get ip FOR remote connections :IF u
This article describes how to useWindows PE boot DiscClearStubborn malicious plug-inTo solve WindowsBlue Screen fault.
The most undesirable computer failure for Windows users is the blue screen. Hardware faults, such as memory stability, bad sectors on the hard disk, and even loose mouse interfaces, may lead to a blue screen. Sometimes, when a blue screen fault occurs, it needs to be resolved from the software aspect. This article introduces a blue screen Fault Caused by malware and its solution
What is the difference between SYS and system accounts? has been ignorant, just take it for granted that the size of the permission is not the same.
However, they are all administrators.
Now, I know there's a difference:
' SYS ' can only be logged in as SYSDBA (and perhaps sysoper.) , both the client and the server can"System" can be logged on to the client only as normal, and both normal and SYSDBA are ava
mysql5.7 adds the SYS system database, which provides a quick overview of the system's meta-data. This library does make it easy for DBAs to discover a lot of information about a database, and it can help to solve performance bottlenecks. This library is the default in mysql5.7, which can be imported manually above the mysql5.6 version, and what does the database package find on GitHub by itself? This library is a view of the form of Information_schem
Questions raised by sys. dm_ OS _waiting_tasks of SQL Server Applications (I ),
Many users wait through sys when viewing SQL statements. view dm_exec_requests. The waiting type is also obtained through wait_type, sys. dm_ OS _waiting_tasks can also see the difference between session waiting ....
Not much nonsense.
Test version 2012
Field description of
14. sys and OS module sys
In sys, let's talk about the SYS. argv list, which contains command line parameters.
#!/usr/bin/python#filename: sum.pyimport sysdef sum(a, b): 'addtwo numbers' returnint(a) + int(b) if len(sys.argv) == 3: printsum(sys.argv[1], sys.argv[2])else: print'enter two
Program Report! In the concise python tutorial, we can see a short section. importsys is followed by "foriinsys. argv". Where does sys. argv come from? In addition, sys. argv [0] is "we", and sys. argv [1] is "are ". Where did this come from? Did you write it yourself? Where? All the teachers laughed at me! I can see a short section in the python concise tutorial
SYS: has the role or permission of DBA, sysdba, and sysoper (System Operator). It is the user with the highest Oracle permissions and can only Log On As sysdba or sysoper, but cannot log on as normal.System: Has dBA and sysdba permissions or roles. you can log on as a common user.• [Differences between sysdba, sysoper, and DBA]Sysdba User: You can change the character set, create and delete databases, and log on to
Tags:--Different No database system installed Oracle ISQL color log rorToday, with the isql*plus to the SYS user to connect to the database when the ora-28009:connection as SYS should be as SYSDBA or sysoper error, do not know what is going on, Remember when the connection of the time when the error did not report on the past. It is possible that a new library has been built with DBCA, so it is not connecte
Environment where sys cannot log on remotely: the database ORACLE 10 Gb is installed on the data Server A (Red Hat Enterprise Linux Server release 5.5 (Tikanga, however, we cannot log on to the database remotely from machine B with the DBA account. Problem 1: SYSDBA cannot be remotely logged on (here is not the CRT remote login) SYSDBA cannot be remotely logged on in two cases: 1: the prompt is ORA-01017: User Name Password error C: \ Users \ kerry> s
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