Monitoring MySQL monitoring transaction hanging (RUNNING) alarm notification in Nagios
Preface:An error occurred while submitting the business alarm order. The page was not responded. After troubleshooting, the transaction was not committed or rolled back. I thought that if the operation status of the
of the exact attributes and compares them to the given thresholds. Typically, we define a monitoring request as follows:Definition2.1:、、、The monitoring request is initiated by the hyper-node and then propagated to all work nodes through the management node. Finally, it activates monitoring to initiate monitoring. The
utilization, CPU queue length, disk space and I/O, memory usage, network traffic, and so on. For the system with high real-time requirement, the effective monitoring and management of system key indicators is an important means to ensure the high availability of the system, therefore, it is necessary to develop a clea
statement2. Execute DDL statements. For example, the create table statement automatically executes the commit statement;3. Disconnect the database;4. failed to execute a DML statement. Automatically rollback.Syntax: savepoint savepoint_name;Rollback to savepoint savepoint_name;Data File: The file that stores the database data.Learn about data files:Desc dba_data_files;Control File: A very small binary file used to describe the physical structure of the database.Understand the control file infor
Document directory
Performance bottleneck
Performance counters
Monitoring servers are a key part of server management..By using appropriate monitoring tools, you can detect server problems, evaluate the results of website content changes, and plan upgrades to facilitate your access to the site. Select an appropriate monitoring tool and method based on the i
The monitoring server is a critical part of server management. By using the appropriate monitoring tools, you can detect server problems, evaluate the results of changes to site content, and plan upgrades to facilitate user access to the site. Select the appropriate monitoring tools and methods based on the information you need.
You can also monitor the server by
Land and Archives Management Information System [archives recording]
Recording of land monitoring Archives
-- Establish a personal brand through knowledge sharing.
2.1.3 land monitoring description
The following figure shows the directory description interface of the land monitoring file:
Original: Chapter III-Monitoring SQL Server using system functions, stored procedures, and DBCC SQLPERF commands (3)This is the last article in this series. How the DBCC command will be used to monitor the usage of SQL Server log space.Objective:Each database must have a transaction log. The transaction log records eac
(' Emp_table_alert ', To_char (sysdate,' YYYYMMDD ') | |': Table emp is changed ');
End
Where dbms_alert.signal is used to send alerts, and under this session, make some changes, such as insert [SQL]View PlainCopyprint?
INSERT INTO emp (empno,ename) values (1234,' w001 ');
Commit
Note that you must commit, because Dbms_alert is transaction-based. Once commit, the waiting state of the session in the first sqlplus is ende
management view displays information about Object locks.-- Copy monitor:Publishing Server View:1. Release: independent projects are displayed for each configuration release. The icon displays the type and status of the release.A. There is a blue circle of Purple Book icon inside, which indicates snapshot copying.B. The Blue Book icon with a green right arrow inside indicates transaction ReplicationC. The Yellow Book icon with a green left arrow and a
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