PHP

Sometimes the database is damaged due to power loss or other reasons. We can use the MySQL command to quickly fix all databases or specific databases. For example: Sometimes the database is damaged due to power loss or other reasons. We can use the

Unique identifier of a database (Oracledatabase. This expression is sufficient for a single database, but with the popularity of distributed databases composed of multiple databases, The unique identifier of an Oracle database. This expression is

Check the mysqlerr log today and find that the following logs will always appear during mysql restart: [Warning] Neither -- relay-lognor -- relay-log-indexwereused; Check the mysql err log today and find that the following logs will always appear

ORA-12170: TNS: ConnecttimeoutoccurredORA-06512: atSYS. DBMS_SNAPSHOT ORA-12170: TNS: Connect timeout occurred ORA-06512: at SYS. DBMS_SNAPSHOT Oracle jobs cannot run automatically and report the following errors: Errors in

When we use catalog instead of controlfile as rmanrepository, the metadata information about the backup will also be stored in controlfil, so that when we use rman, When we use catalog instead of controlfile as rman repository, the metadata

The ASM instance is similar to a common database instance (RDBMS) and also consists of SGA and a bunch of background processes. For most systems, SGA only needs 64 MB to support LargePoo In the ASM instance. The ASM instance is similar to a common

I accidentally found that my DB2 test environment could not be used. I always reported an error when I opened it. I always thought it was db2audit and reported an error. I accidentally found that my DB2 test environment could not be used. I always

Sysbench is a modular, cross-platform, multi-thread benchmark testing tool. It is mainly used to evaluate the database load of different system parameters. It mainly tests the following types: (1 ). cpu performance (2 ). disk I/O performance (3

OracleDataGuard _ slave database read-only or read/write access Oracle Data Guard _ slave database read-only or read/write access Opening a Standby Database for Read-Only or Read/Write Access 8.2 Access the standby database in read-only or

Removing diskgroup from the ASM instance of Oracle11g reports an error ORA-15027 Removing diskgroup from an Oracle 11g ASM instance reports an error ORA-15027 Delete diskgroup on an Oracle 11g ASM instance. An error occurred while deleting the

In Oracle, you can specify a default value for a table column. In this way, when you insert data, if the column does not appear in the insert statement, the default value is assigned to it. In Oracle, you can specify a default value for a table

MySQL reports Table in Linux MySQL reports Table in Linux In Linux, MySQL reports the Table 'xxx' doesn' t exist error. How can this problem be solved? Problem: The program reports the error of Table 'xxx' doesn' t exist, but the database

Author: starstar blog last night: yestreenstars.blog.51cto.com this article was created by myself. If you need to reprint it, please indicate the source. Thank you for your cooperation! Set up MySQL Author: Last night's star blog: Movie! Set up

DataGuard is increasingly becoming an important tool for disaster recovery and pressure-sharing in databases. As the legendary DBA, you have to go to the kitchen and get to the hall. Take a look at this. DataGuard is increasingly becoming an

Here is a simple installation and usage record. First, you must have an available mongo environment, either Win or Linux environment. Suppose you know something about mongo and know some commands. Here is a simple installation and usage record.

Paging query statements for different databases OracleMySQLSQLServerDB2infomixsybase Oracle MySQL SQL Server DB2 infomix sybase paging query statements for different databases Paging query statements used in different databases: Current page:

1. Create a table createtablett1 (idintprimarykey, c1INT); createtablett2 (idintprimarykey, c2INT); insertintott1value Create table tt1 (id int primary key, c1 INT); create table tt2 (id int primary key, c2 INT); insert into tt1 value 1. Create

In the previous article, pt-table-checksum was used to verify data consistency. This section describes how to verify master-slave data consistency. when determining whether master-slave data is inconsistent, you must consider how to fix it. Push

ObjectRelationMapping (ORM) is a technology designed to solve the mismatch between object-oriented and relational databases. In short, ORM uses Object Relation Mapping (ORM) is a technology designed to solve the mismatch between object-oriented and

MySQL dual-host master architecture, coupled with Load Balancing Devices, can achieve high performance and high availability of mysql database load balancing, Server Load balancer equipment can be based on algorithms to database MySQL dual-host