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  Four tricks of ​ to use wwwhj8828com18088049999Web of Science database for free

  Web of Science is a very useful literature retrieval database, such as we have previously introduced: [tracking the field of core literature 2] WOS database literature retrieval and export; notes: the use and skills of web of science. However,

  2022-06-01 06:09:29 Views: 223
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  In 2019, the domestic database opened a new era in the first year.

  The first year means a new beginning. Why is 2019 called "the first year of domestic database"? In my opinion, the prosperity and development of a technological ecology must have extensive investment, extensive participation and extensive attention, all of which are indispensable. And in 2019, there will be an unexpected combination of all three.

  2022-06-01 06:09:21 Views: 252
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  Oracle user$

  SYS.USER$ table in Oracle-last password change time, last locked, last expired, creation time, fai

  2022-06-01 06:09:20 Views: 275
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  The murder caused by the foreign key without index

  First, the fault phenomenon received a CASE on the weekend. The fault description is that a large number of TX locks were generated in the business at that time. Because DBA did not know much about the principle of locks and blind KILL processes, it was unable to locate the problem as soon as possible. In order not to affect the business, restart the database, resulting in a large number of user complaints. Fr

  2022-06-01 06:09:17 Views: 218
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  Mysql backup series

  Three backup methods of mysql https://www.cnblogs.com/fengzhongzhuzu/p/9101782.htmlMysql backup Series (1)-- Summary of backup schemes https://www.c

  2022-06-01 06:09:17 Views: 252
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  The principle of read by other session and its solution in practice

  At around 7: 00 on March 17, the customer's set of 11gRAC suddenly showed an increase in active conversations, the waiting event was too high, and the cpu utilization rate was close to zero. Try to restore the process of solving this problem as much as possible: query wait event: select inst_id, event#

  2022-06-01 06:09:16 Views: 257
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  The method of getting DDL statement of TABLE in Oracle

  The method of getting the DDL of a table can use a variety of methods to obtain the DDL of the table: 1. Use DBMS_METADATA.GET_DDL to obtain the DDL statement 2, imp.indexfile3, impdp.sqlf of the table.

  2022-06-01 06:09:13 Views: 254
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  Oracle 12c New feature maintenance Table Partition Global Index does not fail

  1. Official documentation of the new feature (3) use the new feature update indexes clause # update indexes to update all indexes, global or local, and when using update indexes to update global

  2022-06-01 06:09:13 Views: 280
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  Using RMAN backup set to build Oracle Dataguard Step by Step (2)

  5. Network configuration and password file configuration Primary and sys users have the same requirements for managing passwords, so direct copy naming is supported on the problem of password files. [oracle@SimpleLinux oracle] $cd $

  2022-06-01 06:09:13 Views: 293
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  [SQLPLUS] list of files required by the sqlplus client

  Tables Emurl, Emure 2 and Emure 3 list the required files from each of the SQL*Plus and OCI packages. The file

  2022-06-01 06:09:12 Views: 225
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  Limitations of Online DDL for MySQL

  Take the following limitations into account when running online DDL operations:During an online DDL

  2022-06-01 06:09:12 Views: 287
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  Oracle test user environment creation method (scott,sh,hr.bi.oe, etc.)

  Oracle test user scott,sh,hr.bi.oe and other environment creation methods create scott test user in Oracle11g environment, and directly call the @? / rdbms/admin/utlsampl.sql script. For sh,o

  2022-06-01 06:09:12 Views: 273
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  Redis cache key definition rules

  When using redis, pay attention to namespaces, one namespace for each project, and different namespaces for different businesses within the project. The namespace of redis is the key of redis to: separate, such as MAIN:USER:TOKENMAIN:USER:RTOK

  2022-06-01 06:09:11 Views: 224
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  Solution to server transaction log full

  Method 1. Open the query analyzer, enter the command BACKUP LOG database_name WITH NO_LOG2, and then open the enterprise manager-- right-click the database to be compressed-- all tasks-- shrink the database-- shrink files-- select logs.

  2022-06-01 06:09:11 Views: 262
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  Data on the cloud, should choose full extraction or incremental extraction?

  Author: transferred to Shifu: Alibaba data Zhongtai official website https://dp.alibaba.com Overview data extraction refers to the data extracted from the source data, is the first step in the construction of the data center. Data sources are generally relational databases, and in recent years, with mobile

  2022-06-01 06:09:09 Views: 216
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  Introduction to the use of MySQL initialization script mysql_install_db and option parameters

  Mysql_install_db is an initialization script that is placed at... / mysql/scripts by default. This script can be used on any operating system with perl. In versions prior to 5.6.8, the script was a shell script, and

  2022-06-01 06:09:09 Views: 247
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  Oracle standby's ORA-01578 ORA-01110 ORA-26040, bullshit NOLOGGING.

  Exception: DB: Oracle 11.2.0.1-after switching between switch over master and slave for user DB during Labour Day holiday when the version is low enough, the error in the new master library DB after discovery switch is as follows: Wed May 08 09:44:14

  2022-06-01 06:09:05 Views: 205
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  MongoDB access timeout

  MongoDB version: 3.2.6cacheSizeGB: 32 engine: WiredTiger architecture: replica set business request MongoDB timed out. Check the MongoDB log, there are a large number of slow update statements, check through netdata

  2022-06-01 06:08:54 Views: 290
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  MySQL 5.7Import data report error to the table & quot;ERROR 13 (HY000): Can't get stat of"

  MySQL 5.7Import data into the table error: mysql > load data infile'/ var/lib/mysql-files/ADDSubscribers_MSISDN.txt' into tab

  2022-06-01 06:08:53 Views: 247
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  OCP-051-008

  View the Exhibit and examine the structure of the CUSTOMERS table.Which two tasks would require subq

  2022-06-01 06:08:50 Views: 207