2014-03-31 22:25 by Xiaoxiang Hermit, 21797 reads, 12 Comments, Favorites, compilation Oracle database sessions have five states of active, INACTIVE, killed, CACHED, sniped. A inactive state session indicates that the session is inactive, idle, and waiting. For example, PL/SQL developer is connected to a database, and after executing a statement, the session is in the inactive state if the SQL statement is not resumed. In general, a small number of In
instead of using the default $HOME/.SCREENRC
-d|-d [Pid.tty.host]
Instead of opening a new screen session, you are disconnecting other running screen sessions
-H num
Specifies that the history rollback buffer size is num rows
-list|-ls
List existing screen sessions in pid.tty.host format
-d-m
Start a session that starts in d
C-a as the start of the screens command, enter c-a A If you want the c-a character to be received by the window. Screen also allows you to use the-e option to set your own command and escape characters in the following format:-exy x is the command character, and y is the character that escapes the command characterThe following command launches a screen session that specifies the command character C-t, the character of the escaped c-t is T, and the change is visible through the C-T command.[Ema
Session management is an important part of web development, including sessions and cookie two technologies. This chapter describes the creation and use of cookies and sessions.
Cookies:
Cookies are often used to identify users. Cookies are small files that the server leaves on the user's computer. Whenever the same computer requests a page through a browser, it sends cookies as well. The value of a cookie c
The Linux process has a certain relationship with each other. For example, on the basis of the Linux process, we see that each process has a parent process, and all processes are rooted in the init process, forming a tree structure. We are here to explain the process groups and sessions so that we can manage the process in a richer way. Process GroupEach process belongs to a process group, and each process group can contain multiple processes. The pro
Http://weiyingjun.blog.hexun.com/50994330_d.html
Ora-00018 Maximum number of sessions exceeded exceeds maximum sessionsOracel the default process value of 150 causes the actual session value to exceed the set value of Oracle (the number of sessions is process*1.1+5), so an error occurs.
Workaround:It is recommended that the value of the process be changed to a large extent.
View the process in the current
The session header message has been sent for the same reason as a cookie.In PHP Tutorial 5, the registry configuration options for all PHP sessions are programmable, and in general, we do not have to modify their configuration. To learn about PHP's session registry configuration options, refer to the Manual sessions processing function.Session to save the data, is serialized $_session array to store, so the
Session
Comparing the cookie,session is stored on the server side of the session, relatively secure, and does not have the storage length limit as cookies do, this article briefly describes the use of sessions.
Because the session is stored as a text file on the server side, the client is not afraid to modify session content. In fact, the server-side session file, PHP automatically modify the session file permissions, only the system to read and write
0. Conceptual understanding: What is the relationship between user sessions and connection threads?
A user session and a user connection thread are one by one corresponding relationships, and a session is a user-connected thread.
Problem Description:What if the system hangs on the system because it performs a very large DML or DDL operation, and we want to break the operation?Workaround:1. Kill thread: Kill user's sessionBut the time is
current type, that is, T-SQL statements, such as Select,insert,update,delete.
Status request state: Background,running,runnable,sleeping and Suspended.
Wait_resource requests the currently waiting resource.
Open_transaction_count the number of transactions opened by the current session.
Cpu_time the CPU time, in milliseconds, that the request uses.
Elapsedtime_ms the CPU time, in milliseconds, that has elapsed since the request arrived.
PERCENT_COMPLETE specifies the progress
NHibernate 3.0 Cookbook The third chapter, Using stateless sessions translation.When dealing with large amounts of data, you may often use the more "bottom-up" API to improve performance, and many of the advanced features are turned off in this process. In NHibernate, the stateless session is the high performance, underlying API.This article, we will use a stateless session to update our movie prices.Get readyAs in the previous section, create a conso
The example in this article describes how PHP saves session sessions using MySQL. Share to everyone for your reference. The specific analysis is as follows:
In many large systems generally have this function, but to separate the analysis, the online reliable information is not too much here I organized an issue to share with you
Saving session sessions with MySQL has many advantages over files:
1 in favo
This article roughly explains the implementation of distributed session with Nginx+tomcat+spring+redis.
Spring Project Address: https://github.com/hshenCode/spring_redis_exercise
1. System topology
1 Redis servers to store sessions. 2 tomcat servers, accessing Redis for session storage. 1 nginx servers, as reverse proxies and load balancers, forward requests to the Tomcat server for direct access to the Nginx server
2. Nginx as reverse proxyBecause of
Label:1. Start the resource plan Alter system set RESOURCE_LIMIT=TRUE Scope=spfile; 2. Set inactivity 15 minutes disconnect, release resources Alter profile default limit Idle_time 15; 3. Clear the Inactive process (No 10 minutes to send the test pack) Add Sqlnet $ORACLE _home/network/admin. expire_time=10; SELECT SID, Serial#,module, STATUS From V$session S WHERE S.username Isnotnull Andupper (S.program) in (' TOAD. EXE ', ' w3wp. EXE ') and S.last_call_et >= 60*60*2 and s.status = ' INACTIVE '
DG Master and Standby switch Walkthrough in 10.2.0.3 Environment, after closing the application and restarting the main library, the main library queries switch state:Sql> select Switchover_status from V$database;Switchover_status--------------------SESSIONS ACTIVEExecute the following command to try to switchSql> ALTER DATABASE COMMIT to switchover to physical STANDBY;The error is as follows:Ora-01093:alter DATABASE CLOSE only permitted with no
In Unix-like systems, users typically deal with a variety of related processes. Although there is only one terminal process (the user's login shell , which launches various programs and services through the shell) at login time, many related processes are usually generated shortly thereafter, such as the following:
Run non-interactive programs in the background (for example, "" in the Bash command)
Switch between various interactive processes through the Shell's job control
Star
The first step is to use the TTY command to view your session ID, in this case the session ID is 1[[email protected] ~]# TTY/dev/pts/1[Email protected] ~]#The second step uses the W command to see which sessions the current server has;[Email protected]:~$ W10:14:59 up min, 2 users, Load average:0.00, 0.09, 0.27USER TTY from [email protected] IDLE jcpu PCPUDante Pts/1 192.168.1.2 10:14 0.00s 0.54s 0.00s WDante pts/0 192.168.1.120 10:10 4:29 0.55s 0.55s
There are two generally accepted techniques for managing sessions in Web service, one using HTTP and HTTP cookies, and the other with SOAP headers. Axis can help you achieve both of these technologies.
There is no standard method of managing session in Web service, there are only two recognized technologies, one is relying on HTTP and HTTP cookies, the other, and perhaps the most important method, is to use SOAP headers. Axis can help developers impl
accessed after 1440s, then the session is considered "junk file" and waiting for GC (garbage collection) Process calls are cleared; session.gc_probability=1;session.gc_divisor=1000; These two parameters are set reasonably according to the size of the website. Whenever a session is initialized, there is a gc_probability/gc_divisor probability to perform a garbage collection.I open three sessions, then create three corresponding session files, when eac
Hibernate not obedient--could not initialize proxy-the owning sessions was closed
Development Environment: Struts 1.2 + Spring 1.2.8 + Hibernate 3.2the problems encountered:Org.hibernate.LazyInitializationException:could not initialize Proxy-the owning sessions was closedAt Org.hibernate.proxy.AbstractLazyInitializer.initialize (abstractlazyinitializer.java:60)At Org.hibernate.proxy.AbstractLazyInitializer.
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.