in Operation and maintenance

Usually, when technical support from software manufacturers is needed, we always use sunflower, Todesk and other remote tools to operate on the server. However, these tools are inconvenient when multiple servers and manufacturers need maintenance. They do not have the functions of authority allocation and audit logs. Find the tool Next Terminal on the Internet. It is free and open source. It supports RDP, SSH and other protocols, and can be accessed directly through a browser. There is no need to install software, and it supports

in Python

Recently, the manufacturer only provided a Windows 32-bit dll dynamic library file for the ID card reader. You need to use python to call the dll file to read the ID card information. Pit encountered, 32-bit dll, can only be called with 32-bit python, 64 bit python will prompt OSError: [WinError 193]% 1 is not a valid Win32

in Python

When installing Cnocr on a Windows computer, an error is reported, prompting that the installation of Polygon3 extensions failed. You need to install Microsoft C++Build Tools. After searching, you can't find the whl package of Windows 64bit Python 3.10. It happens that there is MinGW gcc environment on the computer, which is compiled with MinGW gcc. Make

in Python data base

Prepare Ubuntu Server 20.04 LTSPython3.9 Oracle Database 11gOracle Instant Client instantclient basic linux. x64-12.1.0.2.0 to install cx_Oraclepip install cx_Oracl

in data base

To create a table, create a table data DLL (database definition language) operation. The definition requirements of table names and column names are as follows: must start with a letter. The length of the table name is 1-30 characters. The table name consists of letters (A-Z, a-z), numbers (0-9), _, $, #. The Oracle reserved words CREATE TABLE user name cannot be used. Table name (field name field type [DEFAULT default value]

in data base

Normal login sqlpuls/nolog connect user/ password@orclsysdba Log in as sqlplus/nolog connect sys/ password@orcl As sysdba View the current login user show user Exit the database or quitSET command

in Operation and maintenance

The lastpass management password has been used before. Recently, the lastpass was removed from the national/regional app store due to trademark problems, which made it very inconvenient to update the software. Recently, I found that Bitwarden is a password management system. Bitwarden can be used for free. It can unlock advanced functions for a fee. The price of the advanced version is 10 dollars per year. The front and rear ends are all open source. If you don't want to use Bitwa

in Operation and maintenance

When the H3C R4900 G2 server starts Raid to install ESXi, the hard disk drive cannot be found. The Raid card driver is packaged through VMware PowerCLI and ESXi Customizer PS. Required software Windows 10 64 bit environment VMware PowerCLI (Download) ESXi Customize