Tag:recycle bin

  • The recovery methods of data and tables deleted by Oracle include truncate

    Time:2021-1-4

    In our work, when we operate the database, we often have a problem that shouldn’t happen: users accidentally delete a very important table or the data in the table, and there is no backup, so we need to restore it as soon as possible. The following is the solution: we mainly use the flash feature […]

  • How to set up FTP server

    Time:2020-11-22

    Want to set up FTP server, in fact, is very simple, just need to download a FTP server, I did not know how to do before, but later found a very easy to use FTP server, especially suitable for novice use, the following to give you an introduction. This FTP client isIIS7 server management toolIts […]

  • How to recover the files in the recycle bin

    Time:2020-11-11

    A registry restore method suitable for technical residence First, press the shortcut key win + R (or click Start) and enter “regedit” to start the registry editor; Then find and navigate to “HKEY”_ LOCAL_ MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace””; Find an item value named “{645ff040-5081-101b-9f08-00aa002f954e}” in the left tree structure. If there is no item value, create a new […]

  • Hadoop framework: detailed explanation of datanode working mechanism

    Time:2020-11-10

    Source code:GitHub. Click here || Gitee. Click here 1、 Working mechanism 1. Basic description The data block on datanode is stored on the disk in the form of file, including two files: one is the data itself, the other is the data block metadata, including length, check and time stamp; After the datanode is started, […]

  • Flash back of Oracle

    Time:2020-10-20

    reference material:Using Oracle Flashback Technology New features of Oracle 11g flashback operation flashback query flashback query Flashback Version Query flashback transaction query Flashback data Flashback table flashback drop Flashback data Flash back to file These operations are described below. Before introducing these operations, see if the flashback feature is on. Check that the flashback feature […]

  • Give you a chance to repent

    Time:2020-10-15

    Under LinuxrmThe command is to delete a file, but Linux does not have a recycle bin mechanism, so once the file is deleted, it will be completely deleted from the disk. And a lot of people like it-fOption, which means mandatory, is used when deleting a folderrm -rfCommand, in this way, the folder itself, as […]

  • How to find the important files deleted in the recycle bin?

    Time:2020-9-6

    The recycle bin is a unique function of the computer. When the files are not used, we can put the unnecessary files in the recycle bin. After a period of time, the files in the recycle bin will disappear automatically or empty manually. In the computer technology developed at the same time, everyone knows that […]

  • How to do if the recycle bin of Windows computer can’t be opened

    Time:2020-8-14

    What can I do if the PC recycle bin can’t be opened?When using the computer to delete files or programs, the deleted files will be temporarily stored in the recycle bin, which can also facilitate our quick recovery. However, some users find that they can’t open the recycle bin when they want to open the […]

  • Delete table and Oracle recycle bin

    Time:2020-7-13

    1、 DROP TABLE statement of Oracle First, let’s take a look at the syntax format of Oracle drop table.     Explain the parameters: schema Schema represents the scheme name, which can be understood as the user name, and is the table under the current user by default. For example, to delete the EMP table […]

  • How to hide a desktop folder and turn it into a recycle bin icon?

    Time:2020-7-8

    Today, I’m going to teach you how to hide the desktop folder and turn it into a recycle bin icon, which can be used to hide some files that you don’t want others to see. If you want to learn, you should take a closer look. Let’s have a try! 01. On the deskNew folderAnd […]

  • Recycle bin functions teach you how to play recycle bin

    Time:2020-6-15

    Recycle bin is a standard component of windows, just like our garbage can, it’s so ordinary. However, if the “trash can” can be used in a style, it seems that home life has a “taste”. In the face of “garbage can”, we can’t just know “throw away” and “empty”, act! Here’s how to play recycle […]

  • [teacher Zhao Qiang] delete table and Oracle recycle bin

    Time:2020-5-8

    1、 DROP TABLE statement of Oracle First, let’s look at the syntax format of Oracle drop table. Explain the parameters: schema Schema represents the scheme name, which can be understood as user name. It defaults to the table under the current user. For example, to delete the EMP table under Scott user, drop table scott.emp […]