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  11g rac add a control file

  First, environment 11g rac II, demo step 1. Check the control file path SYS@ysdb1 > show parameter control_filesNAME TYPE VALUE-

  2022-06-01 11:33:18 Views: 296
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  The problem of installing RAC permission binding on centos6

  My environment is as follows: [root@syk1 ~] # ll / dev/mapper/*crw-rw---- 1 root root 10, 58 Oct 24 07:59 / dev/mapper/contro

  2022-06-01 11:33:18 Views: 235
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  How to implement redis distributed caching

  Summary: first: what is Redis? Redis is a memory-based, persistent log-type, Key-Value database high-performance storage system, and provides multi-language API. Second: the emergence of background data structure (Data Structure)

  2022-06-01 11:33:15 Views: 258
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  Oracle Memory Management and HugePage (serial 2)

  The management of SGA before MSMM10G is achieved by manually setting a series of parameters, such as the following important parameters: ● buffer_cache_size ● shared_pool_size ● large_pool_size ●

  2022-06-01 11:33:10 Views: 238
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  Walk Through the Fire,Is there a way out

  Walk Through the Fire,Is there a way out preface Part1: written at the beginning of Walk Through the Fire,Is there a way out. We wish to go to the sea of fire

  2022-06-01 11:33:03 Views: 241
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  Start hbase using supervisor

  Managing the process is a troublesome thing. Sometimes the process crashes because its memory is preempted by other processes, and there is no good way to solve it. Then it involves the problem of how to make it fail to start automatically. Supervisor is such a software. Before you do it, please make sure that you need to let

  2022-06-01 11:33:00 Views: 243
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  MySQL 5.6 delayed replication, database recovery after misoperation

  MySQL 5.6supports deferred replication, and you can specify a value for latency on the Slave server. The default value is 0 seconds. Use the MASTER_DELAY option to set the N-second delay for CHANGE MASTERTO. 1. The following is an actual demonstration, which is running normally.

  2022-06-01 11:33:00 Views: 261
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  Mysql sets a complex password with a $special symbol that makes it impossible to command login

  Security considerations include a special symbol of $when setting the MYSQL password, which causes the following error to be reported when writing the script. After a lot of trouble, it is found that it is $to change the password to remove $.

  2022-06-01 11:32:57 Views: 275
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  MongoDB Notes XII-fixed set

  1. The characteristic of a fixed set is that a fixed set does not have an index by default. Even _ id hesitates to allocate space without an index. His insertion speed is very fast. The order of the fixed set is determined so that the query speed is very fast. The most suitable application is log management 2. Create a fixed collection to create a

  2022-06-01 11:32:56 Views: 246
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  Too many Postgres connections psql: FATAL: sorry, too many clients already

  Today, the developer came to me and said that their database could not be connected, maybe there were too many connections, and then I logged on to the server and tried to log in to the database, which also reported an error: psql: FATAL: sorry, too many clients already is very

  2022-06-01 11:32:56 Views: 231
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  Openstack Mitaka for Centos7.2 deployment Guide (2)

  4.4Computing service configuration (Compute Service Nova) deployment node: Controller Node needs to install novaapi novaconductor novacons on the Controller node

  2022-06-01 11:32:56 Views: 240
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  MySQL 5.5 change the default character set

  First of all, the character set problem of MySQL is mainly two concepts, one is Character Sets, the other is Collations, the former is character content and coding, and the latter is some rules for comparing the former. These two parameter sets can be used in a database instance, a single

  2022-06-01 11:32:55 Views: 204
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  Centos 7 complete process of installing RocksDB

  [root@es1 ~] # yum-y install lrssz git gcc gcc-c++ lz4-devel loaded plug-in: fastestmirrorDetermining fastestm

  2022-06-01 11:32:55 Views: 205
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  Query table, field information

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  2022-06-01 11:32:55 Views: 229
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  Redis slow query log

  1. What is slowlogSlow log is the logging system that Redis uses to record the execution time of queries. Query execution time refers to the cost of executing a query command, excluding IO operations such as client response (talking) and sending replies.

  2022-06-01 11:32:55 Views: 265
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  Job Management and Runner of SaltStack

  Configuration file / etc/salt/mastercachedir: / var/cache/salt/master # cache path keep_jobs: 24 # job Save time salt Executive Module official document ht

  2022-06-01 11:32:43 Views: 280
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  Linux command: the eighth of MySQL series-- MySQL transaction related content

  MySQL,ODBC database transactions execute multiple transactions at the same time: parallel in a way that does not affect each other; transactions interact with each other through datasets. The START TRANSACTION; start transaction command database allows operations such as rollback undo only if the transaction is started.

  2022-06-01 11:32:40 Views: 279
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  12c New features of sqlplus

  D:\ instantclient_12_2 > sqlplus hr/hr@pdbtestSQL*Plus: Release 12.2.0.1.0 Production on Fri Dec 29 15:

  2022-06-01 11:32:40 Views: 262
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  SQL server database deployment

  In today's life, there is data everywhere. A small APP software on our mobile phone may be supported by dozens of servers behind him. There is data on the server, and each software has a background database. Several commonly used databases are: SQL server this database

  2022-06-01 11:32:10 Views: 267
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  Jdbc uses the merge into function in oracle

  Merge into can merge data already in the oracle data table. That is, update, otherwise update the following example is the test passed after the jdbc data source connection 1. Single data Long companyAuthId = Seqke

  2022-06-01 11:32:10 Views: 208