shell scripts for monitoring disk usage
This script comes from a blog study with learning A Ming:The most basic of company monitoring is to monitor the use of disks, otherwise it will lead to business accidents.General monitoring requirements are as follows: every minute to scan the status of the disk.When disk space usage or inode usage is higher than 90%, an alarm is required.And a ...
Posted by dnamroud on Fri, 25 Jan 2019 20:24:14 -0800
Net Programmers Learn Oracle Series (15): DUAL, ROWID, NULL
1,DUAL table
2,ROWID type
2.1,Using ROWID to Query Data
2.2,Updating data with ROWID
3,NULL value
3.1,NULL and empty strings
3.2,NULL and Functions
3.3,NULL and Index
3.4,NULL and SQL
4,summary
1, DUAL table
DUAL is a virtual table in Oracle, which is used to form the grammatical rules of SELECT. Oracle system guarantees that t ...
Posted by Dookster on Sun, 16 Dec 2018 17:18:04 -0800