resource limit

If your website suddenly fails to be accessed and the Service unavailable error occurs, sometimes it may be caused by many reasons. Don't worry. Next we will introduce how to solve the problem of Service unavailable so that the website can operate

Database performance is an eternal topic, that is, how to use less resources to achieve more efficient performance. The Oracle system parameter resource_limit is a parameter used to control the user's usage of database resources. It is enabled when

How to unlock accounts in Oracle databases When creating an Oracle database, SYS logs on to the Oracle database and unlocks it using the SQL * Plus tool as follows. 1. Use the data dictionary dba_users to check the locking status of the Oracle

ORA-28001: the password has expired Solution ORA-28001: the password has expiredCause: The user "s account has expired and the password needs to be changedAction: change the password or contact the DBA An error is reported when the program connects

ORA-28000: the account is locked user locking troubleshooting Today, my colleague reflected a problem, a test database modified the password, and changed the password used by the relevant application, still appear after a while the account is locked,

Keepalived Server installation and configuration, keepalived Server0. Keepalived Introduction Keepalived is a high-availability service solution based on VRRP protocol. It can be used to avoid IP spof. Similar Tools include heartbeat, corosync, and

This article describes the Linux signal list in detail. For more information, see Run the following command to view the list of signals supported by Linux: ~ $ Kill-l1) SIGHUP 2) SIGINT 3) SIGQUIT 4) SIGILL5) SIGTRAP 6) SIGABRT 7) SIGBUS 8) SIGFPE9)

Introduction Every program using a relational database may encounter data deadlocks or unavailability, which need to be programmed in the Code; this article mainly introduces the retry logic concepts related to Database Transaction deadlocks and

The meaning of ulimit-a output on AIX has previously been shared about changing commands in linux, but the AIX Commands are not the same as those in linux. However, the basic solution is www.2cto.com: toomanyopenfiles. The system resource

Oracle Database Password validity period parameter 1. view the profile corresponding to the database user. SQL> select username, profile from dba_users; check the profile of the historical database user sersv IN THE displayed information. Generally,

Restrictions on oracle user logon failures"FAILED_LOGIN_ATTEMPTS" is used to configure the maximum number of consecutive password input errors. If this value is exceeded, the account is locked. 1. Run the following command to query the value of

First, check that your service is enabled without ASP. net state serviceiis admin service is set to automatic start and then set the default website under Internet Information Service (IIS) manager to right-click the website and adjust the

PHP.ini parameter TuningDirectory1. Open the Safe Mode of PHP 12. User group security 13. Close the hazard function 14. Turn off PHP version information leak in HTTP header 15. Close the Register global variable 16. Open MAGIC_QUOTES_GPC to

Main contentI. Information transfer process of Flash backSecond, UNIX signal catch exceptionThird, Nsuncaughtexceptionhandler catch exceptionIv. SummaryV. Reference linksI. Information transfer process of Flash backThe underlying kernel generates a

The meaning of ulimit-a output on AIX has previously been shared about changing commands in linux, but the AIX commands are not the same as those in linux. However, the solution is basically www.2cto.com: too open files. The system resource

Alter any cluster: modify the permissions of any cluster Alter any index Alter any role Modify permissions of any role Alter any sequence Alter any snapshot Alter any table Alter any trigger Alter cluster Modify permissions on clusters Alter

Sigquit establish core file termination process, and generate core fileSigill Creating a core file illegal directiveSIGTRAP build core file tracking self-trappingSigbus establishing a core file bus errorSIGSEGV creating core file Segment Illegal

1, related concepts.1. Programs, processes, threadsThe program does not run alone, and the program is assigned resources to run only if it is loaded into memory, and this execution is called a process. The difference between a program and a process

 In the development of operations we often encounter similar to "Socket/file:can" T open so many files, "Unable to open more processes", or coredump too large problems, which can be set resource constraints to solve. Today, when I was teaching a

Linux kernel socket optimizerVi/etc/sysctl.confNet.core.netdev_max_backlog = 30000 The maximum number of packets that are allowed to be sent to the queue when the rate at which each network interface receives packets is faster than the rate at which