use. The administrator can log in and leave the workspace required to resolve the problem, even when the normal user space is full. The use% column in the list represents the percentage of normal user space used, even if the number reaches 100%, and the partition still leaves room for the system administrator to use. Finally, the mounted on column represents the mount point of the file system.Case 2: Displaying disk usage in Inode modeCommand :Df-iOutput :[[email protected] log]# df-i file syst
use% column in the list represents the percentage of normal user space used, even if the number reaches 100%, and the partition still leaves room for the system administrator to use. Finally, the mounted on column represents the mount point of the file system.Case 2: Displaying disk usage in Inode modeCommand:Df-iOutput:[Email protected] log]# df-iFile System Inode (i) Used (i) available (i)% mount point used/dev/sda7 5124480 5560 5118920 1%//DEV/SDA
1. Account and Password settings
To select User sys, SYSTEM, DBSNMP, and Sysman to use the same password, select "All accounts use the same password".
Bi user, password Ch51*****,scott user. All of the above are the same password ch5*******
Here, select "Use different Passwords" and set the user's password individually:
SYS user's password is Oracle
The system user's password is manager
DBSNMP user's password is DBSNMP
The password for the Sysman user is Sysman.
Scott user, specify user passw
ora-28009:connection as SYS should be as Sysdba
Afraid to forget can:
Click "Password Management", Open Password Management dialog box, such as figure, set SYS, and system user password, can be set to the same, username and password are the same, the role of DBA
Locate the Sh,scott, remove the lockout account and set the password oracleenterprise Manager Database control URL-(ORCL):
Http://localhost:1158/em
The database configuration file has been installed to E:\oracle\product\10.2.0, and othe
*plus DBA access):
oracle.sysman.db.isqlpluswebdbaurl=%isqlplus_protocol%\://%isqlplus_host%\:%isqlplus_port%/isqlplus/dba/ Dynamic
For example:
Oracle.sysman.db.isqlplusurl=http://chablis.au.oracle.com:5560/isqlplus/dynamic
Oracle.sysman.db.isqlpluswebdbaurl=http://chablis.au.oracle.com:5560/isqlplus/dba/dynamic
For RAC applications, the emoms.properties file to all nodes to the cluster must also have
, hd:ide HDDA represents the hard drive serial number, a: The first hard disk, B: The second hard disk, and so on.1 for partition ordinal, first partitionCommand 2:df-i, displaying disk usage in Inode mode[Email protected] log]# df-iFile System Inode (i) Used (i) available (i)% mount point used/dev/sda7 5124480 5560 5118920 1%//DEV/SDA9 52592640 50519 52542121 1%/opt/dev/sda8 1280000 8799 1271201 1%/var/dev/sda6 5124480 80163 5044317 2%/usr/dev/sda3 2
Recently, an Acer8481 device was installed with Ubuntu10.10 and then turned on. The brightness was too bright and the system's brightness adjustment function did not seem to work. So google found this article: Ubuntu10.10brightnessprobleminAcerAspire4741 according to its practice: sudovi/etc/default/grub (used to use vi)
Recently, an Acer 8481 installed Ubuntu 10.10 and then started on the machine. The brightness was too bright and the system's brigh
The LAN sharing method is not difficult. It is difficult to connect to the Bluetooth LAN, but the ping fails. The packet is sent normally, and the accept packet is increased at a rate of 0 or close to 0. There are obvious signs of different networks.
When I first installed the system and drive path, I was able to connect to the Bluetooth shared LAN. But then I couldn't do it. I got it all day yesterday and finally got it again. But honestly, I really don't know why.
I will only publicize the st
days and then clamored to buy dual-core, I ran to Zhongguancun as soon as I was in Beijing. In fact, I didn't even understand what dual core was, but I had been familiar with the work in dinghao for a few days during the winter vacation, I went into the village with him, so I had an unforgettable experience.
First, Hailong inquired about the price, and then settled as planned. He was looking at a 4202 version of Acer. At that time, most of the dual-c
the Samsung 2014 edition Ativ book 9, but the use of some cutting angle of the fuselage will give full play to the charm of the appearance of the notebook.
Although limited to the location and budget of Chromebook 11, it does not use more advanced metal material, which is the same as most Chromebook notebooks, but visually, Chromebook 11 is not very different from Dell's Windows system products , and it's very light in the hands.
Specification size
On physical specifications, Chr
Usually, I will install and start both Ubuntu and Windows systems, but this time I decided to completely eliminate Windows pure installation of Ubuntu. After the pure installation of Ubuntu is complete, no boot device (nobootabledevicefound) is output at the end of the screen instead of entering the GRUB interface. Apparently, the UEFI boot settings are screwed up. No boot device is available after Ubuntu is installed. I will tell you how to fix it on Acer
games require high display performance, only high-performance independent graphics cards are used. The benefits of this design not only give the notebook display performance a wider range of applications, but also meet the high battery life requirements of the notebook mobile, so as to meet the user's display performance requirements, at the same time, get the best endurance time.
Today, we will not discuss the development history of the dual-display technology, nor identify the performance of
graphics cards are used. On the contrary, if 3D games require high display performance, only high-performance independent graphics cards are used. The benefits of this design not only give the notebook display performance a wider range of applications, but also meet the high battery life requirements of the notebook mobile, so as to meet the user's display performance requirements, at the same time, get the best endurance time.
Today, we will not discuss the development history of the dual-disp
industry analyst believes that there will be more in common, visually than other competitors in the Chinese market with Google.
In addition to a similar look, its search engine, Aliyun's entry into the market could be another battle between Google and China's Alibaba. Yes, these two competitors in the High-tech industry have history with each other in the country, and it is not going to be described as friendly.
Last year, Alibaba created the Aliyun mobile operating system smartphone in China
select * from employees;Create Table ** as select ** from **When creating these tables, only the non-null constraints of the original table will be copied. Other constraints will not be copied.
Exercise:Use em to create constraints:Tables-> edit-> table-> ConstraintsCreate a composite index (no keywords)Create a function index.Create index indx1 on EMP (upper (last_name ));Investigate the indexes and types of indexes in the EMP table.Select index_name, index_type from user_indexes;
DML language
panel1) choose Start> Control Panel> Management Tools> Service2) locate the Oracle service you want to start and click Stop
Start Oracle services with MS-DOS commands1) Open the DOS window2) in the window, enter: net stop oracleservicename
Start Oracle services through Oracle administration assistant for WindowsNT
1) Select Start> program> Oracle-home_name> Configuration and migrationTools> Oracle administration assistant for Windows NT.2) Find and right-click Oracle SID3) Select Stop
Log Files
, the rest is basically the completion of the next step. There are no precautions. In fact, the installation of Oracle is always relatively simple.
After the installation, we can use Oracle. Click
Click SQL plus to run. By default, Oracle will give us a username and password: Scott and tiger. But for the sake of security. The user name and password are locked. Therefore, to use this password, we must first unlock it:
1. log on to Oracle using system as the user name and the password you set
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