PHP

When we compile packages, stored procedures, functions, and views, Oracle first obtains a librarycachelock on the handle of these objects, and then When we compile packages, stored procedures, functions, and views, Oracle first obtains a library

In the final analysis, there are two aspects to the design of a relational table. First, it is designed completely according to the paradigm theory. Generally, it is enough to reach the third paradigm, or you can divide it to a further level. For

On the Oracle10g Database Server, a large number of files with the aud extension are generated under the $ ORACLE_HOMErdbmsaudit directory. View the log file content, recorded On the Oracle 10 Gb database server, a large number of files with the

After you modify tunstenapi to parse logs, the log is cleared before switching to the next log. The purpose of this operation is to prevent RelayLog from synchronizing data to mysql. After you modify the tunsten API to parse logs, the log is cleared

Website maps are vital to a website. It is a better way to create a website map and submit it to a search engine. In this way, you can not be limited by the number of pages, and you can fully control the structure information of the website map.

This article describes how to use simplexml_load_string in php. For more information, see the following code. At first glance, the results are confusing: The Code is as follows: $ String = Hello

Recently, a zabbix monitoring system has been set up in the company. Now we need to use zabbix to monitor the master-slave synchronization of mysql. Recently, a zabbix monitoring system has been set up in the company. Now we need to use zabbix to

Mysql starts from Version 5.5 and does not use. configure for compilation. Instead, it uses the cmake compiler. For specific cmake compilation parameters, refer to the mysql official website documentation (※very important) Mysql starts from Version 5

Every DBA in the Process of database management should inevitably encounter a variety of errors (ORA-1547, ORA-904, ORA-1578 ......). Some errors occur frequently. Every DBA in the Process of database management should inevitably encounter a variety

There are many methods to migrate the database, and RMAN is commonly used for migration. Using RMAN to migrate the database belongs to the physical backup and recovery scope of the database. during the whole process, the database There are many

The process is generally to first view the v $ archive_dest_status view, obtain the summary information, and then view the alert. log file of the master database and slave database. View the v $ arch of a friend's master database The process is

This parameter is set in oracle to meet the needs of some previously developed programs, which contains a large number of similarstatement, but is used when rewriting is unrealistic. This parameter is set in oracle to meet the needs of some

The two datasets processed by nested loop connections are called outerloop (driving data source, drivingrowsoulce) and innerloop (innerloop) The two datasets processed by nested loop connection are called the External loop (namely, the driving data

Iosched is a method used by the operating system to determine the order of IO operations submitted on Block devices. There are two purposes: Improving IO throughput and reducing IO response. IO sched is a method used by the operating system to

Both partitions want to think that the other party has a problem and they need to take over the business. If there is no voting algorithm, the two partitions will simultaneously operate the database (shared storage ). Both partitions want to think

This article mainly introduces three PHP multi-dimensional array to one-dimensional array method examples, which are implemented by using the foreach, for, and while loop methods, respectively, for more information about how to convert a

We usually back up the database to a file when backing up the database. In fact, we can back up the database to multiple files and multiple disks. There are several advantages to doing so: 1. Backup We usually back up the database to a file when

There is a new feature in Oracle11gR2. When there is no data in the table, no segment is allocated to save space. Oracle cannot export empty tables when executing export, but it is still There is a new feature in Oracle 11gR2. When there is no data

Even if the autoReconnecttrue parameter is added to the url when Mysql is created, the connection time exceeds the server wait_timeout time limit, Even if the autoReconnect = true parameter is added to the url when Mysql is created, the connection

Ldquo; ORA-39002, ORA-39070hellip; hellip; rdquo; continuous error was reported during data import using IMPDP today. The cause is simple, Ldquo; ORA-39002, ORA-39070hellip; hellip; rdquo; continuous error was reported during data import using IMPDP