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  Oracle Import and Export

  Chapter:SQL*LoaderLab1.Import text file to databaseassume text file is like this: 1: 60,CONSULTING

  2022-06-01 21:07:36 Views: 232
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  FTP of file sharing service

  File sharing service 1. What is a file sharing service? to put it simply, a file or storage block device can be shared for everyone to use. (1) there are three kinds of sharing services: 1. Ftp: belongs to the application layer service and can be used across platforms (linux <-> unix <-- > windows)

  2022-06-01 21:07:24 Views: 210
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  Elasticsearch 6.2.4 run problem handling record

  Problem 1: max number of threads [2048] for user [work] likely too low, increase to at least [4096] solution: enter l

  2022-06-01 21:07:23 Views: 235
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  A MySQL single table query SQL, causing a "story"

  First, the process of describing the story is like this. The MySQL database has a large table of more than 40 gigabytes. The developer executed a single-table query, and as a result, I received an alarm that the disk space was full. All of a sudden, I am not calm. Who is causing trouble? I have thought about all kinds of things in my mind, and I think of them the most.

  2022-06-01 21:07:23 Views: 300
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  Mysql Advanced (2) mysql replication Architecture

  Advantages of mysql replication: 1. Data distribution 2, data backup 3, load balancing 4, prompt high availability mysql/slavemaster/slave is relatively simple, master is responsible for responding to client write requests, s

  2022-06-01 21:07:15 Views: 288
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  Ora-20005

  SQL > begin 2 3 dbms_stats.gather_table_stats (ownname = > 'GZ_SAFETY',tabname= >' MB_BSS_USER_LOCATIO

  2022-06-01 21:07:14 Views: 246
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  Hbase basic sentence usage

  Use the hbase shell command to enter hbase: [root@abcdefghijklmnopqrstuvwxyzabcdefghijkl123456789012~] # hbase shellSLF4J:

  2022-06-01 21:07:05 Views: 216
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  Mysql master-slave replication configuration (GTID-based replication link)

  In addition to log point-based replication, there is a GTID-based replication method after the mysql5.6 version: GTID, that is, the global transaction idGTID ensures that each transaction committed on the master can generate a unique id value in the replication cluster at the same time in the master-slave database configuration file.

  2022-06-01 21:07:05 Views: 243
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  DB2 tuning (2) Resource Monitoring

  Since there are many links involved in this performance tuning project, it is best to monitor all the contents in the build environment, taking into account the lowest cost, so that it is carried out from two servers, the application server and the database server, using nmon as the monitoring basic data, and monitoring JVM and database alarms and

  2022-06-01 21:06:59 Views: 252
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  Installation and simple use of mongoDB

  Download address: https://www.mongodb.org/, click a data storage folder (data) under the installation directory, then create a start.bat (startup file, of course, you can also start using the command line every time), and write mongod in it.

  2022-06-01 21:06:59 Views: 221
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  Android sqlite database operation

  Sqlite is different from other common databases, that is, sqlite database is saved as a file, which can be exported directly from the phone, stored as a file, and then put on the computer to view. Android has the following steps to operate database: 1. Inherit SQLit

  2022-06-01 21:06:49 Views: 289
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  User and rights management

  What is a user without a user, can YES user: one of the core elements of the resource acquisition token, resource allocation, security rights model password: to achieve user authentication container: a container that can hold many users, can assign permissions, group (group) role (role) group name: Grou

  2022-06-01 21:06:49 Views: 251
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  Quickly understand and master Chinese natural language processing

  What is NLP in the computer field, NLP (Natural Language Processing), which is often called "natural language processing", is the study of how to make computers understand human language. This includes enabling computers to understand natural language texts

  2022-06-01 21:06:49 Views: 226
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  An implementation idea of complex SQL

  1. Defining a city rating (city_rank) less than 3 and GMV greater than 6000 or a city rating greater than 3 and GMV greater than 5000 is defined as a high consumption (gq) city rating (city_rank) less than 3 and advertising revenue greater than 360 or a city rating greater than 3 and

  2022-06-01 21:06:48 Views: 210
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  Oralce comes with a script to create mutual trust-sshUserSetup.sh

  The Oracle 12cR1 test comes with a mutual trust script, and the path is under. / grid/sshsetup/ after the installation file is unzipped. Script path $cd / soft/grid$lsinstall response rpm runclu

  2022-06-01 21:06:48 Views: 256
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  Window mysql5.5 error

  The system is missing the window2008R2 runtime installation services.msc enters the service to see if the service is enabled to install the window runtime window2008R2 is not installed when the runtime is first installed, resulting in MySQL

  2022-06-01 21:06:45 Views: 257
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  Create a database instance by dbca under Linux

  Once the listener is configured, we can create a database with dbca. First of all, use vnc to link to the oracle user desktop setting environment variable [oracle@oracle-learn ~] $export LANG=en_US to start the dbca installer [

  2022-06-01 21:06:15 Views: 256
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  Service Log and backup Command of mysql

  Mysqlbinlog: used to parse binlog logs. Under the data directory, mysql.index is the index file for mysqlbinlog. The function of binlog is to record the additions, deletions and changes within mysql. No record of select.

  2022-06-01 21:06:09 Views: 273
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  Scheduled Job Running Shell Script Fails With ORA-27369

  Scheduled Job Running Shell Script FailsWith ORA-27369Applies to:Oracle Server-Enterprise Edition

  2022-06-01 21:06:08 Views: 218
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  Mysql master-slave replication and read-write separation

  Before mysql master-slave replication and read-write separation, we have done load balancing and high-availability deployment of Nginx on LNMP platform. Today, we will use some technologies to improve the high availability of data and database performance. First of all, let's take a look at mysql master-slave replication.

  2022-06-01 21:06:01 Views: 304