What is the use of Python's if__name__ = = _ _ main__

This article mainly explains "what is the function of if__name__ = = _ main__ of Python". The content of the explanation in this article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "I of Python".

2022-06-01 Internet Technology 我要分享

Build DNS domain name resolution service in CentOS7

The function of DNS system the function of DNS system in the network is to maintain an address database, which records the corresponding relationship between various host domain names and IP addresses, in order to provide forward or reverse address query services for clients. Forward resolution: find the corresponding IP address based on host name (domain name)

2022-06-03 Servers 我要分享

How to deal with file names containing spaces and special characters under Linux

This article mainly explains "how to deal with file names including spaces and special characters in Linux". The explanation in this article is simple, clear and easy to learn and understand. now please follow the editor's train of thought to study and learn how to deal with spaces and special characters under Linux.

2022-06-01 Servers 我要分享

How to solve the problem of Chinese name garbled in php files

This article mainly introduces how to solve the problem of Chinese names and garbled codes in php documents, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it. The solution of Chinese name garbled in php file: 1.

2022-06-02 Development 我要分享

[DATAGUARD] failover handoff of physical dg (6)

[DATAGUARD] failover switching of physical dg (6) 1.1 BLOG document structure figure 1.2Preface 1.2.1 introduction to technical enthusiasts. After reading this article, you can master the following skills and learn some other knowledge that you do not know.

2022-06-01 Database 我要分享

How to develop interface form with COM component of C #

This article mainly explains "how to develop interface forms with COM components of C#". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn how to develop interface forms with COM components of C#. C # COM group

2022-06-02 Development 我要分享

Theory: DNS Domain name Resolution Service-theoretical explanation

The function and type of BIND domain name service basic DNS system installation and configuration file use BIND to build domain name server build cache domain name server build master and slave domain name server key steps: find master configuration file, find startup script 1: the role of DNS system 1.1

2022-06-02 Servers 我要分享

How VBS batch renames files and backs up original files before operation

Editor to share with you how VBS batch renamed files and backup the original files before the operation, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it! Core function'=

2022-06-02 Development 我要分享

DNS domain name system

DNS domain name system DNS: domain name system domain name system. The DNS system records the corresponding (mapping map) relationship between domain names and IP addresses. IP address is used to identify the uniqueness of one's identity in the Internet. IP is difficult to remember, so there is the DNS domain name.

2022-06-02 Servers 我要分享

Manage (001): ORAPWD command

The ORAPWD command creates and maintains a password file. The syntax of the ORAPWD command is as follows: orapwd FILE=filename [FORCE= {y | n}] [ASM= {y | n}] [DBUNIQUENAME=dbname

2022-06-01 Database 我要分享

RMAN compressed backup

CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE' DEFAULT' OPTIMIZE FOR LOAD TRUE; # default query

2022-06-01 Database 我要分享

How to solve the problem of RMAN-20207 error reporting

This article will explain in detail how to solve the problem of RMAN-20207 error reporting. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article. RMAN-20207: UNTIL TIME or R

2022-05-31 Database 我要分享

How to use the create/offline/drop/rename method of datafile

This article mainly introduces "how to use the create/offline/drop/rename method of datafile". In the daily operation, I believe that many people use the create/offline/drop/rename of datafile.

2022-05-31 Database 我要分享

What are the basics of Python

This article mainly introduces "what is the basic knowledge of Python". In daily operation, I believe many people have doubts about what basic knowledge of Python. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope to answer "what is the basis of Python?"

2022-06-02 Development 我要分享

Summary of common commands in Linux

I briefly summarized it. I hope it will be helpful to all of you. Shutdown / restart shutdown poweroff # # shutdown immediately shutdown-h now # # shutdown shutdown-h time # # to

2022-06-02 Servers 我要分享

Simulation of nologging problems caused by a rman recovery

Test environment: Oracle 11.2.0.4SLES 11SP4 concludes as follows: no force logging,table nologging, dml nologging, ora-26040no for appears

2022-06-02 Servers 我要分享

Db_file_name_convert order problem

In duplicate, if there is not enough space for a remote directory, you can split the file into two directories. Using db_file_name_convert, db_file_name_convert does not convert the directory name, but the file name.

2022-06-01 Database 我要分享

The relationship between oracle sid,instance_name,db_name,oracle_sid

[1] understanding of ORACLE_SID-Ora

2022-06-01 Database 我要分享

Tar packing

Tar command tar package tar-cvf packaged file name. Tar + file name + directory name "- c": create a tar package or compressed file package "- v": visualization "- f": followed by file name, compression followed by "- f file name"

2022-06-01 Network Security 我要分享

Oracle11g and Oracle12c rman clone database

1. Oracle12c rman cloning step 1, generation environment information query 1) instance status information 2) data file information 3) log file information 4) parameter file information 2) test environment preparation: 0) database software installation and configuration 1) pfile parameter file 2) password file

2022-06-01 Database 我要分享