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-DBA-DBA_2PC_NEIGHBORS contains information about pending transactions entering and exiting the connection. DBA_2PC_PENDING contains information about distributed transactions waiting to be recovered. D
Today, the application platforms of large enterprises are transforming to micro-service architecture. Under the micro-service architecture, the relationship between applications and databases and other underlying platforms will be reconstructed. The new generation of distributed databases must support flexible expansion, resource isolation, multi-tenancy, configurable consistency, and multi-mode (support all kinds of SQ.
[preface] the default parameters for Oracle database creation are generally enough for most databases, but in some cases there are write parameters that need to be changed. [problem background] the company has an Oracle database warehouse, the whole database size is 5TB, but the whole space is also fast.
Usage 1. Single-valued INCLUDE=TABLE: "= 'EMP'" INCLUDE=TABLE: "=' DEPT'" 2, multi-valued INCLUDE=TABLE: "IN ('EMP',' DEPT')" 3, fuzzy matching I.
Summary page of cases and solutions: Aliyun real-time computing product case & solution summary for an Internet product, typical risk control scenarios include: registration risk control, login risk control, transaction risk control, activity risk control, etc., and the best effect of risk control is to prevent it before it happens, so there are three kinds of implementation before and after the event.
One. Official illustration this picture involves three versions of the avatar Incarnation. Incarnation 1: the lowest black horizontal line starts with SCN1, goes through SCN1000, and ends with SCN2000, which is the first avatar of the database, called
Original note source: 1, the problem leads to: sometimes it is necessary to judge whether there is a big thing in binlog, such as in the case of high delay in solving master-slave. Usually we use mysqlbinlog to find it, but there is a problem. We use mysqb
Original link: http://www.postgres.cn/v2/news/viewone/1/385?tdsourcetag=s_pcqq_aiomsg I am very kind. You have to leave a link. Thank the original author for sharing.
Recently, there is a problem that ORACLE 11G RAC FOR LINUX calls the rman backup script through NBU. The problem is that the backup script clearly says that the archive is deleted when there is a backup, but the archive is not deleted automatically, resulting in frequent exposure of the archive space and database tamping.
Summary 1. Ib_logfile similar to oracle online redo log, containing commit and uncommit data 2, binary log similar to oracle online redo log and arch
Today, I wrote a stored procedure that needs to copy the data of the tables under other users to the target table through dblink. As a result, when I visit the tables of other systems, there are always problems in the stored procedure and the answer is found in Stack Overflow. In stor
Today, the customer said that there was an error ora-01017 error when a single instance 11g database of windows system logged in using sqlplus. I did find such an error when I logged in. I searched a lot of articles on the Internet, but it didn't work even if I tried it. Finally, it was because
-A brief introduction to TiDB needs to be verified. TiDB is an open source distributed NewSQL database inspired by Google Spanner / F1 papers by PingCAP. TiDB has the following NewSQ
Oracle side: CREATE VIEW "FJMP". "MP_ATTEND_APPLY_ALL_VIEW" ("ATTEND_ID", "ATTEND_TYPE", "ATTEND_NAME", "PERS"
Environment: Sqlserver two nodes have completed the construction of the failover cluster: node 01: hereinafter referred to as 01, and primary node 02: hereinafter referred to as 02. The startup account for the database service for the secondary node must be established in the database user. 01: create EndPoint and
1. MySQL server security specification 1. It is forbidden to apply directly connected DB, which is generally accessed through proxies. Access to the DB public network is prohibited. 3. Interworking between production and office is prohibited, and the production environment and office environment should be separated. 4. Linux system initialization security options: 1), some alias
ORACLE partition table carding series (1)-partition table overview, classification, usage and matters needing attention https://www.cnblogs.com/yumiko/p/6095036.htmlORACLE partition table carding series (2)-points
Original: https://www.enmotech.com/web/detail/1/790/1.html introduction: after two days of unremitting efforts, finally recovered a misoperation deleted production server data. Record the process and solution of the accident
Desktop icons are too messy and messy? Want an easy-to-use desktop cleaning tool? The editor recommends the iCollections Mac version for you. Through the iCollections Mac version, to help you create photo frames and view pictures, browse desktop favorite websites, find schedules, Jane
A common classic problem, but also a difficult industry problem, Oracle-based programs are sometimes fast and sometimes slow, many experienced DBA face this problem is also helpless, there is not an optimal solution. If your database is experiencing various performance problems, you might as well contact Zhongyi Technology to give it a try.
What are the differences between the storage engines commonly used in MySQL?
This article is to share with you about how common storage engines in MySQL differ from each other. The editor thought it was very practical, so I shared it with you as a reference. Let's follow the editor and have a look. The four storage engines commonly used in MySQL are: MyISAM storage
2022-06-01 03:50:57Details
The strongest snail has unlimited resources to buy the cracked version so that you can play continuously.
The strongest snail unlimited resources in-house cracked version is a very popular leisure adventure nurturance mobile game recently. The painting style of the game is very strange, with a lot of interesting copy content challenges, players are like watching the story while playing the game, very interesting. In the game, you will change.
2022-06-01 04:48:35Details
The extraction time of bid evaluation experts, how long in advance is appropriate?
Article 22 of the http://www.zhaobiao.cn/ measures for the Administration of experts on Evaluation of Government Procurement (hereinafter referred to as the measures) stipulates that "in principle, the time for the selection of evaluation experts shall be half a day or one day before the bid opening, and shall not exceed two days under special circumstances.
2022-06-01 06:18:08Details
What are the differences in the implementation of delete table operation in MySQL
This article is to share with you about the differences in the implementation of table deletion in MySQL. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look. This paper mainly talks about three operations of deleting tables in mysql, delete statement and tru.
2022-05-31 23:37:44Details
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