PHP

Redis can be used to conveniently implement a task queue, but in Laravel, The Redis queue always has the problem of executing a task multiple times. The reason is that it writes the reserved duration, that is, if the task is not completed after one

The following articles mainly show you how to view MySQL database operations, access records, and logs. We all know that MySQL database operations, access records, and logs are widely used, the following is a detailed introduction to these contents.

DML error log is an error log function introduced by Oracle10gR2 similar to SQL * Loader. The basic principle is to transfer any records that may cause statement failure to the first DML error log is an error log function introduced by Oracle 10gR2

Recently, wordpress was migrated and the system was upgraded to CentOS6. A strange problem is that the regular backup database used in CentOS5.8 and the script sent by mail cannot send attachments, the email content is also the file encoding

In the first three sections, basic data has been maintained for hive permission control, and now the user permission configuration function has been implemented. In addition, you can perform maintenance and management through the interface. Next,

Configuration: source database 100.100.100.21 Instance name dbsid2 target database 100.100.100.41 Instance name db1 lab goal: source database in Configuration: source database 100.100.100.21 Instance name dbsid2 target database 100.100.100.41

It is determined that ldquo; PASSWORD_LIFE_TIME180 days rdquo; is set in the default profile in Oracle11g by default. It is determined that ldquo; PASSWORD_LIFE_TIME = 180 days rdquo; is set in the default profile in Oracle11g by default.

ReplicaSet is a decentralized backup mode provided by mongodb (mongodb also provides master-slave deployment and sharding mode). Each mongod can be a master and a copy Replica Set is a decentralized backup mode provided by mongodb (mongodb also

Changing the size and quantity of online redo log files sometimes optimizes the database. You can add or delete online redo log groups or log members in the primary database without affecting the standby database. Similarly, you Changing the size

Requirement: Change the MySQL root Password from null to 123456. Use mysqladminmysqladmin-uroot-ppasswordmypasswd to enter this command and then enter roo Requirement: Change the MySQL root Password from null to 123456. Use mysqladmin-u root-p

For automated O & M, such as backup and recovery, DBA often needs to encapsulate SQL statements into shell scripts. This article describes the shell script in the MySQL database in Linux. For automated O & M, such as backup and recovery, DBA often

Corosync enables High Availability of MariaDB database services. corosync + pacemaker provides HA solutions. Use the shared file system exported by the NFS Shared Server Corosync enables High Availability of MariaDB database services. corosync +

On a server whose system environment is rhel6.5, the two node RAC with the database version oracle11.2.0.4 is set up. The following error occurs when installing the GRID: (Note: vote, data, and flashback are on the storage device) ASMcreated On a

Today there is customer feedback, there is a SQL on 12C no problem, on Oracle11g will report an error, the error content is ORA-01417: The table can be externally connected to at most one other table. Minute Today there is customer feedback, there

Except for the reprinted content, this article is original site: reposted from lovewifelovelife-Roger's Oracle technology blog link: how to solve the problem of Chinese garbled characters when OracleDUL recovers clob? I was bored and studied how

After nodejs is installed, When I access the WP blog, "Your PHP does not seem to have installed the MySQL extension required to run WordPress .", When you access phpmyadmin, the error "mysql extension cannot be loaded" is reported. This is a problem

The motopmongodb real-time monitoring tool can monitor multiple MongoDB servers at the same time. Displays the current operation. Project address: github. comtartmotop use 1. Install with easy_install # wgetbitbucket. orgpypasetuptoolsrawbootstrapez_

Comments: This article describes the pitfalls encountered from the perspective of common developers. Most problems can be avoided, but it still has some reference significance for most developers who are new to them. MongoDB is a popular NoSQL

As mentioned above, for database connection operations, please refer to: Detailed description of mongodb user permission settings for database operations: see: mongodb database creation, switchover, and deletion, database Table insert operation 1,

First, let's explain why we have this problem: we want to create a replica uard between two rac groups. Because datafile, controlfile, and even archivelog are stored on asm, it is unrealistic to copy data directly. The asm disk is always used.