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  Java.sql.SQLException: Io exception: Socket read timed out

  An error of "java.sql.SQLException: Io exception: Socket read timed out" is reported from time to time. The error is as follows. There is no exception when looking from the database log and monitoring log.

  2022-06-01 07:02:11 Views: 286
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  Add three rows, if the same value in a column

  There is an Postgres database and tables with three columns. The data structure is in the external system, so I can't modify it. Each object consists of three rows (the same value of the listed element_id-- row represents the same object in this column), for example: key value

  2022-06-01 07:02:11 Views: 269
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  Domestic database-Dameng database-redhat6.5 issued dream 8.1 installation

  1. Create a user group: groupadd dinstall2. Create user: useradd-g dinstall-m-d / home/dmdba-s / bin/bash dmdba3. Change password: passw

  2022-06-01 07:02:11 Views: 251
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  Key Progress and Prospect of Alibaba and big data Technology

  First, the customer value in the field of big data has been transferred to big data for 10 years, from "tasting fresh" to "Pratt" big data technology has existed for 20 years, and Ali's flying platform also has a 10-year course. The picture above is a very famous evaluation organization of Gartner, in Emerging Te.

  2022-06-01 07:02:10 Views: 234
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  A big mistake for mysqldump. Lessons about the improper use of the compact parameter. Record. Stand by.

  One of the parameters of mysqldump-- the official website of compact-- says:-- compactProduce more compact output. This option enables the--

  2022-06-01 07:02:10 Views: 281
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  What is DB time in AWR?

  There is the term DB time in AWR, so what is DB time? The Oracle10gR2 official documentation gives a detailed explanation (Oracle10gPerformance Tuning Guide 5.1.1.2 T

  2022-06-01 07:02:10 Views: 301
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  MySQL views stored procedures and functions, views, and triggers

  1. Query the stored procedures and functions in the database: select `name` from mysql.proc where db = 'your_db_name' and `type` =' PROCEDUR

  2022-06-01 07:02:10 Views: 273
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  ​ mysql Multi-source replication Skip error handling method

  Mysql multi-source replication skips error handling: the first method: first stop all channel, then execute sql_slave_skip_counter, then open the error channel, and finally open all channel. The second method

  2022-06-01 07:02:09 Views: 244
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  Slow response of program connecting to database caused by Thread pool parameter

  Database version: percona-mysql 5.6.16 for a long time, there will be a program to connect to the database, the response is slow, normally between a few to dozens of milliseconds, but occasionally hundreds of milliseconds; began to reset and adjust the program connection due to development

  2022-06-01 07:02:09 Views: 227
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  Oracle vs PostgreSQL, R & D considerations (7)-Type conversion

  This section takes numerical conversion and numerical and character conversion as examples to introduce some of the similarities and differences between Oracle and PostgreSQL type conversion, which can be extended to other types. 1. Numerical type conversion the following takes numerical types as an example, including the conversion of operation results

  2022-06-01 07:02:09 Views: 267
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  Common report parameter value sets

  Commonly used report parameter value set on November 14, 2014 11:43:45 cauliflower 1110 readings: 608 tag: report oracle more personal classification: Report (1) P_ORGNIZATION_ID:10/NUMB

  2022-06-01 07:02:09 Views: 292
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  Detailed explanation of common output fields of MySQL show status command

  Aborted_clients the number of connections that have been abandoned because the customer did not close the connection correctly. The number of times Aborted_connects has attempted a connection to the MySQL server that has failed. Connections attempted to connect to My

  2022-06-01 07:02:08 Views: 234
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  The method of shrinking sqlserver Database

  / * / 1. Right-click-Properties-options-simple Mode 2. Right-click-Task-shrink-File 3. Right-click-Task-shrink-Database / *

  2022-06-01 07:02:08 Views: 295
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  Worried about the bad PPT cover? These examples are suggested to be collected

  When we do PPT, we often have a headache in the design of the cover. How can we make a bright cover to add points to our PPT? Let's take a look at it. One of the problems we need to make clear before making is how to combine the picture with the title on the cover. That is, there is no loss of picture.

  2022-06-01 07:02:03 Views: 216
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  ERROR 1045 (28000): Access denied for user

  Mysqladmin local login error ERROR 1045 (28000): Access denied for user 'root'@'localhost' solution is as follows: mysqladmin-u

  2022-06-01 07:02:03 Views: 298
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  Joplin for Mac (Mac handy Notebook) v1.0.220 Chinese version of macz

  Joplin Mac is a free, open source note-taking and to-do application on the Mac OS platform. The joplin Mac version can handle a large number of notes organized into notebooks. Notes are searchable, either directly from the application or from your own text editor

  2022-06-01 07:01:51 Views: 297
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  [Mycat] Primary key id self-growing configuration

  In the case of sub-database and sub-table, the database self-increasing primary key can no longer guarantee the global uniqueness of the self-increasing primary key. For this reason, MyCat provides global sequence and provides a variety of implementation methods, including local configuration and database configuration, which are mainly implemented in three ways: local file mode and number.

  2022-06-01 07:01:51 Views: 226
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  Solve the problem of master-slave non-synchronization of MySQL

  Solve the problem of mysql Master-Slave synchronization Today it is found that the master-slave database of Mysql is not synchronized. Go to the Master library first: mysql > show processlist; to see if the next process has too much Sleep. It turns out it's normal. Show master st

  2022-06-01 07:01:51 Views: 299
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  Create table if not exists Waiting for table metadata lock

  Create table if not exists Waiting for table metadata lock version mysql 5.5 phenomenon: mysql > show full processlist

  2022-06-01 07:01:50 Views: 228
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  [XTTS] Oracle transport tablespace xtts increment mode

  -- transmit tablespaces online, incrementally-- create related directories create directory sourcedir as'+ DATA/mydb/datafile';create directory destdir a

  2022-06-01 07:01:50 Views: 283