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  Kvm introduction and operation document

  -- Virtualized KVM (kernel-based virtual machine) xen kvm vmare esx openVZ Oracle VM VirtualBox vsphere enterprise applications: non-native

  2022-06-01 16:06:25 Views: 237
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  Summary of Java problem location methods

  Background "offline no problem", "code can not have a problem is the system reason", "can online remote debug online?" online problems are different from bug during development, and are related to runtime environment, stress, concurrency, and specific business. For online problems, use the tools available in the online environment.

  2022-06-01 16:06:21 Views: 248
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  MariaDB GTID-based replication

  1. Configure the service profile of master-slave node 1.1.Configuring master node: # binlog_format=mixedbinlog-format=ROW# required unique id between 1 an

  2022-06-01 16:06:20 Views: 246
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  InnoDB engine independent tablespace innodb_file_per_table

  By default, InnoDB stores all the table data of the database InnoDB engine in a shared space: ibdata1, which makes it uncomfortable. When adding or deleting a database, the ibdata1 file will not automatically shrink, and the backup of a single database will become a problem. Usually only

  2022-06-01 16:06:20 Views: 301
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  Audit by access VS by session

  ENV [oracle@daidai ~] $uname-aLinux daidai.com 2.6.18-194.el5 # 1 SMP Tue Mar 16 21:52:39 EDT 2010 x8

  2022-06-01 16:06:14 Views: 219
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  Cacti monitoring system

  Cacti is a performance and flow detection tool developed in PHP language. It is a management suite of Web interface. It uses Net-SNMP (protocol tool) to collect monitoring data and combine RRDtool data engine to record data and draw pictures. Service

  2022-06-01 16:05:53 Views: 244
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  Oracle sqlplus Settin

  1. Rlwarp installation and download: http://rpmfind.net/linux/rpm2html/search.php?query=rlwrap downloads the corresponding version, such as rlwrap-0.42-1.el7.x8

  2022-06-01 16:05:53 Views: 277
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  Oracle ogg11 installation configuration document

  one。 Initialize the database with RMAN: configure the parameter file of the target database: OGG1.__db_cache_size=318767104OGG1.__java_pool_size=4194304OGG1.__large_

  2022-06-01 16:05:52 Views: 223
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  MySQL transaction isolation level, lock information

  MySQL transaction isolation level, lock information

  2022-06-01 16:05:52 Views: 234
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  [WARNING: ASM communication er

  Alter log error: Wed Apr 09 14:17:35 2014WARNING: ASM communication error: op 0 state 0x0 (15055) ERROR: dir

  2022-06-01 16:05:52 Views: 299
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  ORACLE Direct NFS installation

  DNFS is a new feature introduced by Oracle 11g to improve the IO performance of the system with its own NFS. Compared with system-level NFS, DNFS reduces the consumption of network and IO transmission. The reasons for the low IO ability of ordinary NFS are as follows: 1. Inefficient data transmission, multi-link implementation is more

  2022-06-01 16:05:45 Views: 275
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  Common error codes and code descriptions of MySQL

  1005: failed to create table 1006: failed to create database 1007: database already exists, failed to create database < = can be ignored 1008: database does not exist, delete database failed < =

  2022-06-01 16:05:45 Views: 225
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  Import open source cloud storage ownCloud

  OwnCloud is an open source cloud project based on Linux, which allows users to access the CVM through browser or WebDAV for various management tasks. OwnCloud supports multiple device access, and users can easily make individuals

  2022-06-01 16:05:36 Views: 203
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  Python operates MySQL database

  To install MySQL, you can download the latest version directly from the official MySQL website. MySQL is cross-platform. Select the corresponding platform to download the installation file and install it. If you are a Windows user, the installation process is very simple, just follow the wizard step by step

  2022-06-01 16:05:35 Views: 287
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  Settings of sql/sql develop on installing 64-bit oracle machines

  Do not use (x86) folder when installing sql/del develop. Use PL/SQL Developer to connect to OracleX64 version: 1. Download 32-bit Oracle InstantClient and expand

  2022-06-01 16:05:35 Views: 254
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  Delete according to the length of the field string in sql

  Writing method in sql server: delete from [table] where len (title) > 30 processing idea: then find out which function of the length is, and take out the length to judge.

  2022-06-01 16:05:35 Views: 288
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  Build lamp environment on CentOS 7

  Install httpd, php, MariaDB,ServerIP 192.168.199.1571 on CentOS 7. First install the relevant package ~] # yum install-y httpd php php-my

  2022-06-01 16:05:30 Views: 238
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  Restore data files without backup and full archive log

  If all the archive logs exist from the time a data file was created to the present, you can recover the data file directly by offline datafile,recover datafile,online datafile, which belongs to

  2022-06-01 16:05:29 Views: 226
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  Postgresql installation and basic operation

  Install 1 add source sudo rpm-Uvh https://download.postgresql.org/pub/repos/yum/9.4/redhat/rhel-6-x86_64/pgdg-cen

  2022-06-01 16:05:29 Views: 272
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  Oracle RAC 11.2.0.4 CTSS status exception

  Usually, the abnormal status of CTSS after Oracle RAC installation is caused by a conflict with the NTP service provided by the server operating system, so it is recommended that you completely uninstall the NTP-related software packages of the operating system itself before Oracle RAC installation. Running Orac

  2022-06-01 16:05:29 Views: 230