roomba maintenance

Today, talk about an old topic, how to maintain an old system, especially a very heavy old system, less than 3-5 years, more than 7-8 years, the first version of the code is not known who is written, the old system ushered in a group of a group of programmers, can be seen as the company's ups and downs, now, it is the company's hero, is also the company's Burden,Each company is more or less some kind of old system. The development of new projects to replace the old system, the need for a lot of

IT operation and maintenance management The concept should originate from the life cycle of the information system, usually the information system must go through the planning, design, development, implementation (deployment), testing (acceptance), operation, abolition and other stages, each stage has corresponding work content, operation and maintenance management is the main work of the stage. It operati

DB2 maintenance manual 1I. Daily DB2 maintenance operations 31. Check whether the management server is enabled. 3.2. Check whether the DB2 instance has been started. 3.3. Check whether the tablespace status is normal. 3.4. view the table status 45. view disk space 46. Check whether the storage management software is normal. 47. Check whether the database backup is normal. 58. Check whether the archived logs

A big wave of high-quality Linux operations and automation operation and maintenance Open class is coming, are you ready? 2016 in order to thank the broad masses of colleagues on the Marco Linux operation and maintenance College support, through internal discussions, special launch a series of open classes to help everyone in the workplace development! And then we'll follow the little part. Marco L

First, the preface SQL Server Backup and restore strategy, which includes a graphical guide to restoring various backup files through the SSMs operation, a minimal downtime migration solution for SQL Server databases, which uses SQL scripts (t) to complete full backups, differential backups, full restores, differential restores, and so on; With the above foundation, we have joined the database backup elements, through the maintenance plan to generat

Tags: stat information and therefore-min statistics BYD attThe default automatic maintenance tasks in Oracle 11g are divided into three categories: Automatic Optimizer Statistics Collection (Automatic Optimizer statistics collection)Collects Optimizer (optimizer) statistics for all Schema objects that have no statistics or only obsolete statistics in the database. SQL query optimizer uses the statistics collected by this task to improve the performanc

, for small tables, not more than 500W rows of the table, the default sampling scale is no problem, for larger tables, such as more than 500W rows of the table (of course, this 500W line is also a reference value, not the absolute value)Therefore, the default sampling scale is simply unable to accurately describe the distribution of data. As a result, it is necessary to update human intervention statistics. So how to update the statistics of the index, is there a fixed way? The answer is in the

Label:MySQL database operations and maintenance coursehttp://www.dataguru.cn/article-4834-1.html?union_site=comm100 Course Outline The first lesson: Machine Selection, System planning Lesson two: Installing a deployment Lesson Three: Stress testing Lesson Four: Performance optimization Lesson Five: Character Sets and permissions security Lesson Six: Log System Seve

There are many geodatabase maintenance tasks that need to be performed on a regular basis. Most of the tasks are standard maintenance for all database management systems (DBMS), such as database backup and database statistics generation. Other maintenance, such as compressing and synchronizing a geodatabase replica, is a geodatabase-specific

First, backgroundPreviously wrote an article about backup: SQL Server maintenance plan to implement database backup, the above article using full backup and differential backup basically can solve the problem of database backup, but in order to protect the data more secure, we need to perfect our backup plan again;The following article mainly joins the log backup, and the design of the frequency of backup and design naming norms and other issues to co

Tags: clustered report guid dia improved span dev common findObjectiveTo do daily inspection is an important step of database management and maintenance, and it is necessary to register each inspection date and result, and may need to make a inspection report. This series is designed to address some common problems: I don't know what to patrol. Don't know how to get a quick checkup Machine Too much physical examination trouble Di

With the progress of the Times, the rapid development of technology, it field of employment requirements are gradually improved, in order to better adapt to their own market environment, small partners continue to walk on the road of learning, to recharge their own value-added. Times in progress, everyone in progress, if you stay, you have regressed. What about the current Linux ops people? What's the problem?I. Problems arising from the rise of cloud computingThe rise of cloud computing, to sol

With the progress of the Times, the rapid development of technology, it field of employment requirements are gradually improved, in order to better adapt to their own market environment, small partners continue to walk on the road of learning, to recharge their own value-added. Times in progress, everyone in progress, if you stay, you have regressed. What about the current Linux ops people? What's the problem?I. Problems arising from the rise of cloud computingThe rise of cloud computing, to sol

Chapter I basic principles and methods of computer maintenance The principles and methods described here are the basis of the second part of the classification judgment, which needs to be conscientiously complied with. §1.1 the basic principles of computer maintenance should be followed: First, the maintenance judgment must start from the simplest thing Simple t

When a vro or vswitch is added to the network, how does the existing network device automatically discover this "new neighbor? For Cisco, the CDP Discovery protocol works. In short, CDP discovery protocols are used to obtain information about neighboring devices. The information includes the type (vswitch or vro) of the connected device, the interface of the connected vro, the interface of the local connection, and the number of devices. In this article, I mainly want to introduce the

Server Security Maintenance Tips 1: Start from basics When we talk about network server security, the best advice I can give you is not to be a layman. When a hacker starts to launch an attack on your network, the hacker first checks whether there are common security vulnerabilities before considering more difficult means to break through the security system. Therefore, for example, when the data on your server is stored in a FAT disk partition, even

How much do you know about server maintenance? Here, I will show you some things I know. First, I hope to give you a basic reference, and second, I hope it will arouse your awareness of server maintenance. 1. Power Control Although a server is not as fierce as an Induction Cooker, It is weaker than an ordinary PC, and it is also a heavyweight power user. The most basic point of server hardware application i

Related Articles: how to conduct MySQL database table Fault Detection how to fix MySQL database tables how to lock MySQL database tables how to maintain MySQL Database Log Files create a database table maintenance specification on a regular basis instead it is a good idea to check the database table only when the problem occurs. A precaution should be taken into account Related Articles: how to conduct MySQL database table Fault Detection how to fix M

Part-time website maintenance management Business Scope: (1) network maintenance (including Intranet lines-Internet Web servers) (2) website content Update (data page) (3) Signing Agreement --------- number of monthly update pages, such as: 40 page updates per month/at least 4 images (4) Intranet computer system maintenance (450 yuan service/limited

1) load capacity is preferred--and then optimized--failure to comply with this rule will inevitably lead to downtime. Do not optimize under the pressure of downtime--focus on increasing load capacity first.2) Take Postgres as an example, make sure that each of your networks matches your Wal file, slony replication, snapshot technology, and disk-based DB versioning (snapshot derivatives)3) do not "optimize" the problem into your architecture. In order to solve the problem, some of the newly added