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  Oracle SET AutoTrace ON View execution Plan

  Autotrace has the following options: SET AUTOTRACE OFFNo AUTOTRACE report is generated. This is the default.SET AUTOTRACE

  2022-06-01 10:56:36 Views: 300
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  OGG maintenance optimization script (24)-OGG status monitoring system-background script

  This simple monitoring system is implemented by html. There is no database in the background. Only the html files collected and uploaded from each machine are sorted out and classified to each directory through a regular shell script, and then the specific update frequency is called by the web page through apache depending on each data synchronization server.

  2022-06-01 10:56:36 Views: 246
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  MyEclipse 2015 Hibernate reverse Engineering

  1. Use DB Browser to establish a database connection Window- > Show View- > Other... Search for DB to create a new database connection in DB Browser and click "Test Driver". The following prompt box pops up to indicate that the connection is

  2022-06-01 10:56:06 Views: 234
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  Fault location and recovery of asm disk startup failure in a node in rac

  RAC environment: oracle database: oracle11gr2 operating system: rhel6.4_x86_64 failure: 1. Failed to start processes and instances related to asm of oracle of one of its nodes in rac. View method: ps-ef | gre

  2022-06-01 10:56:06 Views: 255
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  Chapter II Virtualized vcenter server

  VCenter server experiment requirements: 1. Prepare database 2. Install vCenter Single sign-On3. Install vCenter inventory service 4. Install vCenter server5. Install vsph

  2022-06-01 10:55:40 Views: 285
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  [Mongodb] how to create a replica set for mongodb

  Replica sets's extension on master-slave replication adds automatic failover and automatic repair of member nodes. The following is a technical description of how to build the replica set of mongodb (personally, building mongodb itself does not have much practical information, heavy

  2022-06-01 10:55:36 Views: 292
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  SQL Server Error 15404 solution

  The job runs as "domain\ user" and encounters the following error: JOB RUN: 'Product_JobTest' was run on 2016-10-27 at 4:30:00DURATION: 0

  2022-06-01 10:55:36 Views: 288
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  Mongodb replica set building

  The replica set mode of mongodb has been greatly improved from the previous master-slave mode. Because the previous master-slave mode does not support the host to switch to the slave machine after downtime, it has been gradually eliminated. Now the officially recommended replica set mode supports multiple sections.

  2022-06-01 10:55:36 Views: 207
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  Openstack centos6.8 installation

  Search a lot of information on the Internet, come up with everyone to share under the Openstack installation one. Host assignment: hostname hostnameIpsystemOpenstack192.168.1.220Centos6.8 x64node192.1

  2022-06-01 10:55:36 Views: 216
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  Automatic maintenance tasks of Oracle

  Automatic maintenance tasks are provided in the Oracle database to ensure that the Oracle database can run more efficiently. There are also differences in the types and execution of automated tasks in different versions of Oracle. In this paper, 10g and 11g are mainly used to understand the automatic tasks in Oracle.

  2022-06-01 10:55:36 Views: 240
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  Construction of Redis Master-Slave and Sentinel Cluster (2)

  The principle of master-slave synchronization of Redis is very similar to that of MySQL, and the sentry mechanism (sentinel) for solving single point failure of Redis is very similar to that of MHA for solving single point failure of MySQL. So we're here.

  2022-06-01 10:55:30 Views: 258
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  "Hadoop The Definitive Guide" ch12 HBase

  1. About the introduction of HBase, http://www.searchtb.com/2011/01/understanding-hbase.html is very good. HBase-Hadoop Database, is a

  2022-06-01 10:55:03 Views: 210
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  Silent installation of oracle 11.2R2 database

  This article is a silent installation of stand-alone oracle database, if you need to install cluster mode, or datagruad mode, modify the corresponding parameter value of db_install.rsp oracle 11.2R2 database silent installation 1. Prepare the environment linux operating system

  2022-06-01 10:55:02 Views: 257
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  Query using conditional operators in [mongoDB] Java

  Operators such as $in are often used when querying, such as db.collection_0.find ("_ id": {"$in", "0001", "0002", "0003"}). But how should shell be included in shell,java?

  2022-06-01 10:54:59 Views: 238
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  Optimize it through case study-- JOB Management

  Tuning through case study-- JOB Management Oracle mainly relies on two packages to create and manage job, which are DBMS_JOB and DBMS_ Scheduler [oracle @ rh7 ~] $sqlplus'/ as sysdba'.

  2022-06-01 10:54:56 Views: 214
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  Lock explanation of innodb

  Innodb locks can be analyzed from several dimensions: level, type level, row level lock, table level lock type shared lock, also known as write lock, level: row level lock intention shared lock (IS), also known as intentional write lock level: table level lock exclusive lock (X), also known as read lock belongs to row level

  2022-06-01 10:54:56 Views: 246
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  Application of MySQL read-write separation to improve read-write performance of MySQL server

     read-write separation is achieved through MySQL middleware ProxySQL    ProxySQL has two versions: the official version and the percona version, the percona version is based on the official version based on the modification of C++ language development, lightweight but excellent performance (support processing

  2022-06-01 10:54:55 Views: 283
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  Sql execution exception caused by failure to collect statistics caused by statistics lock

  This is what old production talks about. Inaccurate statistical information leads to abnormal sql execution. This time, it is mainly recorded that table statistics are locked, which leads to failure to collect statistics, which leads to abnormal sql execution: collect table statistics: SQL > exec DBMS_STATS.GAT.

  2022-06-01 10:54:55 Views: 205
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  Oracle Study-- RMAN enabled block change tracking error

  Oracle Study-- RMAN enables block change tracking error system environment: operating system: RedHat EL6Oracle: Oracle 11g R2Target DB: pro

  2022-06-01 10:54:37 Views: 250
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  Simple Command Application of Oracle

  First, start SQL*PLUS1, start menu 2, command line: Cmd, sqlplus3, run graphical interface: SQLPLUSW (supported by default in Windows) character interface: SQLPLUS (generic, Linux, Unix … ) II. Log in to S

  2022-06-01 10:54:37 Views: 262