how many megabytes in gb

Following the 5 best online file sharing websites, we found a GB-level file distribution service, yousendit. This website allows you to send up to 2 GB of files directly to other users by email. The yousenit service has two forms: first, you can directly enter the recipient address on www.yousendit.com, upload the attachment, and the yousendit website is responsible for sending the file to the recipient. S

and available,It is also availableExecute dbms_logmnr.start_logmnr (-Options => dbms_logmnr.dict_from_online_catalog );5. query the information of a header deletion transaction in V $ logmnr_contents.Select username, SQL _redo, SQL _undoFrom v $ logmnr_contents where username = 'ws _ app'And Operation = 'delete '; 2.6 transportable tablespace (TTS) p43You canCopy the primary data file and insert the tablespace into another database.Transfer Time = over FTP + copy Confirm the transfer set. The t

Use the FileSize () function command to implement statistics for file size, requiring: 1, one output in GB, MB, KB, B, 2. The order of magnitude must be greater than 1 less than 1024 and retain two decimal places; Commencement of construction: Copy Code code as follows: $len = FileSize ("1.RMVB"); $i = 4; while ($i) { if ($out = $len/pow (1024, $i) >1.0| | $i ==1) { Switch ($i) { Case 4: {printf ("%.2f TB", $out); Case 3: {

Do you know how much data the bit, Byte, KB, GB, TB, etc. all mean? Have you ever heard of Pb, EB, ZB, YB? Bit (bit) is the English abbreviation of binary digit, the unit of measuring information, is also the smallest unit that represents the quantity, only 0, 12 kinds of binary states. The 8 bit consists of a byte (byte) that can hold an English character. A Chinese character requires two bytes of storage space, and ordinary English words require abo

After Fujitsu RX300 S7 is installed with oracle 10 Gb, the system cannot be started to solve the problem of so many oracle installations, and this has never occurred, which means it hurts. My installation environment is as follows: hardware environment: Fujitsu RX300 S7 OS: RHEL 6.2 oracle version: oracle 10g according to the previous normal installation order, but oracle can be installed successfully. However, after the installation, the system canno

storage features. From the perspective of the database administrator, the objects in a partition have multiple segments, which can be managed collectively or separately. This makes the database administrator quite flexible in managing the objects after the partition. However, from the perspective of the application, the partitioned table is exactly the same as the non-partitioned table. You do not need to modify it when using the SQL DML command to access the partitioned table. Table partitions

[MySQL replication] quick setup of mysql databases below 20 GB Because the data capacity is smaller than 20 GB, using mysqldump for full-database export has little impact on the business. Therefore, this mode is used to build a slave database: PS: master-data = 1, record the Master_Log_File and Read_Master_Log_Pos:1 backup the backup SQL log /Usr/local/mysql/bin/mysqldump-uroot-p-S/usr/local/mysql. sock --

In Oracle10g, Oracle will automatically rewrite the file header information across platforms in the same byte sequence, and no conversion is required. See the following test: [oracle @ danalyora In Oracle 10 Gb, Oracle will automatically rewrite the file header information across platforms in the same byte sequence, and no conversion is required. Let's take a look at the following test: [oracle @ danaly ora In Oracle 10

UbuntuOneCanonical recently announced that Ubuntuone users can expand their ubuntuone space by asking their friends to register. Each time a user is invited to register successfully, they can get up to MB of extra space. Each user can get up to 20 GB space, that is, 40 users are invited. Log on to your ubuntuone and you will see the following text on the webpage: Getmorestoragefree! Ubuntu One Canonical recently announced that users of Ubuntuone can

Given the two files a and B, each of them stores 5 billion URLs. Each url occupies 64 bytes and the memory limit is 4 GB. How can we find the common URLs of files a and B ?, 5 billion 4g It can be estimated that the size of each file is 5G * 64 = 300G, much larger than 4G. Therefore, it is impossible to fully load it into the memory for processing. Consider a divide-and-conquer approach.Traverse file a, obtain hash (url) % 1000 for each url, and stor

We have previously introduced: For a detailed introduction of the Oracle database flashback personality, this article willFlashback of Oracle 10 Gb DatabaseThe configuration and usage are summarized for your reference. You can directly apply the configuration without understanding it. Run the following SQL statement: Sqlplus sys/passwd @ tns_name as sysdba SQL> shutdown immediate; // closes the database SQL> startup mount; // start the

Implementation of auto-expanding partitions in Oracle (use interval partition after 11 GB) Implementation of auto-expanding partitions in Oracle (use interval partition after 11 GB) Create error table: Create sequence seq_error_log_id;Create table error_log (id number, unit_name varchar2 (30 ),Err_code varchar2 (100 ),Err_desc varchar2 (4000 ),Err_date date ); Automatically expand the partition package

Detailed MySQL optimization solution in 8 GB memoryFor any database management system, memory allocation is definitely one of its core, so many people who want to know more about a database management system, I hope to have a look, and I am no exception. The solution is provided here. Try the following settings: key_buffer = 3840Mmax_allowed_packet = 16Mtable_cache = 1024sort_buffer_size = 32Mread_buffer_size = 32Mread_rnd_buffer_size = 32Mmyisam_s

The 32-bit Ubuntu9.04 desktop Edition does not support 4 GB memory or above. It can be modified to 64-bit or install the server kernel, use sudoapt-getinstalllinux-restricted-modules *-serverlinux-image-serverlinux-headers-serverlinux-server to solve the problem. We also hope that 64-bit systems will become mature quickly, applications must keep up with each other. After all, 64 will also be used in the next few years. The 32-bit Ubuntu 9.04 desktop

Urgent! When sed processes ultra-large text files (21 GB), the memory is insufficient .. -- Linux general technology-Linux technology and application information. For details, refer to the following section. I want to extract six specific columns from a table in the database. The current size is 21 GB. Because some of the exported text files also have line breaks in each record, I used the composite command

Oracle 10gExploitationUtlsampl. SQLCreateScott userAnd sample data are the main content we will introduce in this article. We know that many demo programs use the tables of scott users and their users as examples. Therefore, quick creation of this user and data in the initialization table are required. In the Oracle 10 Gb environment, this process is very simple. You only need to run the $ ORACLE_HOME/rdbms/admin/utlsampl. SQL script as a sys user. Th

MySQL database server parameter optimization mycnf, 16 GB memory 8-core CPU business scenario: the background supports online mobile phone update system, db Server Memory 16 GB, 8-core, dell pc server. Qps: about 200 tps: About 1 minute, 50 or more sort_buffer_size = 32 M, 8 M can be read_buffer_size = 32 M, 8 M can be read_rnd_buffer_size = 16 M, 8 M can be table_open_cache = 512 small, it is recommended t

misunderstandings in blogs. Please also ask your predecessors and comrades to correct yourself. After all, I also read a book and record the ideas that will inevitably have a natural place.Qq 604015858 For windows, a task is a thread.Cpu protection for tasks is classified into inter-task protection and intra-task protection.Inter-task protection is implemented through the segment and page mechanismsTask protection is implemented through Permissions The following topic describes task protection.

There is a lot of information about Oracle 10g development on the Internet, because the actual database operations of enterprises in the past are generally based on Microsoft SQL2000 and 2005 versions. therefore, this period of time is also a conversion process. I ordered an Oracle Database 10 Gb SQL Master SQL and PL/SQL book online to repeat the complete system. In general, I feel that I am actually reorganizing the Structured Query Language (Struct

An excellent online storage space, elegant interface, and simple operations. Basic account:Large Capacity: 1 GB of storage space for free users. The size of a single file is limited to 10 MB.Ease of use: Leveraging Ajax technology, the appearance is simple and beautiful, and the operations are very user-friendly, Almost all functions can be completed by clicking.Functions:Supports the tag function, supports multiple file upload and download methods