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recoveryMedia recovery complete, elapsed time:00:00:00Finished recover at 14-nov-14Then log in to the database to executesql> ALTER DATABASE open resetlogs;ALTER DATABASE open Resetlogs*ERROR at line 1:Ora-19751:could not create the change tracking fileOra-19750:change Tracking File:'/u01/app/oracle/oradata/orcl/orcl/changetracking/o1_mf_b51rj77x_.chg 'Ora-27040:file create error, unable to create filelinux-x86_64 error:2: No such file or directoryAdditional Information:1Ora-27037:unable to obt
Overview
The garbage collection of the current commercial virtual machines uses the "generational collection" (generational Collection) algorithm, which has no new idea but divides the memory into several pieces according to the different life cycle of the object. In general, the Java heap is divided into Cenozoic and old age, so that the most appropriate collec
In the actual production environment at large-scale deployment, sometimes need to be able to batch create multiple Linux virtual machines, and the virtual machine with multiple hard disks, some database environment, such as MySQL and MongoDB, will require more than 10000DE IOPS, then the virtual machine created, It is
One, the installation of the virtual machine:1, the current more common virtual machine (VM), the source of the Niang:Virtual PC virtual Box VMware WorkstationVirtualBoxVirtualBox is open source, different from VMs, and powerful, can run on Linux/mac and Windows hosts, and supports the installation of guest operating s
game on a virtual machine to reduce the trouble.
If you want to learn about linux, I think it is a good choice to install linux on a virtual machine. -- Well, I installed virtual machines in this context.
Below are my notes on installing VMware-workstation and linux CentOS-5.5-i386-bin-DVD.
Preparations before insta
Some users when using Azure Linux virtual machine installation software, some software license and the current system's MAC address binding, then the Azure VM restart, Reszie (change size), stop and then boot, the virtual machine MAC address will not change? How does the MAC address on the Azure VM persist?We do a test of VMS in a vnet and not in a vnet.Virtual machines
is lost, or an archive file is missing after the restore database, it is terminated.Conclusion:If you have an old database backup, use recover database or recover database using backup controlfile when all the archived logs and online logs are properly saved, no data is lost.If the archived or online logs (active or current) are lost after the backup data file restore exists, use recover database using backup controlfile until cancel to achieve maximum recovery.
Ii. Recovery of RMAN from
The display resolution is different. Some winform controls are not completely displayed on other machines.
The effects on the development machine are as follows:
The effect on other computers is as follows:
Solution:
Set the AutoScaleMode attribute of the form to None. Try again.
For AutoScaleMode attributes, see http://technet.microsoft.com/zh-cn/magazine/system.windows.forms.autoscalemode (VS.90). asp
Environment Description:1. System: CENTOS72.docker:docker version 1.3.2Configuration process:1. By means of a bridge:Cat/etc/sysconfig/network-scripts/ifcfg-bond0Bootproto=noneBridge=br0Device=bond0Nm_controlled=noOnboot=yesType=bondUserctl=noSet up a network bridgeCat/etc/sysconfig/network-scripts/ifcfg-br0Bootproto=staticDevice=br0ipaddr=xx.xx.xx.xxnetmask=255.255.0.0Nm_controlled=noOnboot=yesSlave=bond0Userctl=noType=bridgeTo start the container:Docker run--rm-t-i--net=none--name=test Centos:
Problem | repeat
about how to prohibit the same user at the same time on different machines repeatedly landing the problem I think so, if there is a wrong place also please correct me, we discuss together.Mainly want to solve the problem at the application level. The reason for not using the database is that the database is used to judge whether the landing is very expensive system resources, with applicati
, gateway, DNS and other parameters are the same. Two network cards are relatively independent in the topology.
Ping results
We ping192.168.15.96 on the 192.168.15.111, the result shows that two network cards can communicate with each other. If a DHCP server exists on the network, the virtual NIC can also obtain an IP address from the DHCP server. So bridging network mode is the simplest and most straightforward pattern in VMware
How to copy files between different machines in LinuxZookeeper
File Copying on different machines in Linux
1. Copy local files to a remote machine:
Scp/home/administrator/news.txt root@192.168.6.129:/etc/squid
Where:
/Home/administrator/absolute path of the local fileCopy news.txt to a local file on the serverRoot log
easily switch between different systems such as Win and Mac.Parallels Desktop for Mac new features:Perfect support for the latest Windows 10 creators update and MacOS high Sierra system.Touchbar support: Allows Officce's Excel, Outlook, PPT and other software to support the MacBook TouchbarImproved performance: Windows files and documents are accessed more than 47% faster!Faster file transfer: USB 3.0 storage devices and external Thunderbolt SSD devi
VMware provides three modes of operation, which are bridged (bridging mode), NAT (network address translation mode), and host-only (host mode).If you want to use VMware to create a separate virtual server in the LAN, provide network services for LAN users, or you want to create a virtual system that is isolated from other machines in the network for special debug
Azure account:We then use the Select Azuresubscription command to choose a second subscription account:OK, let's see if our own set-up account has the machine we built, let's get our VM,GET-AZUREVM.Let's take a look at the specific virtual machines, we want to merge our PilotS1 and PilotS2 into the same cloud service, let's take a look at the specifics of the two machi
When multiple users share access to the virtual machine, the VMware administrator should consider limiting the virtual machine configuration and updating functions. This avoids unexpected or malicious changes to virtual machines. It is easy to set in VMware Workstation.
Restrictions on access to VMware Workstation Shar
As long as we strictly abide by these five simple rules, our data center will be able to avoid the problem of over-expansion of virtual machines
Any technician who has tried to build a server virtualization environment must be impressed by the high flexibility brought by the virtualization technology. We often encounter tasks in our daily work, such as deploying a new application server, creating a complete
Iptables forwarding a native 80 port request to port 8080Iptables-t nat-a prerouting-p tcp--dport 80-j REDIRECT--to-ports 8080
If you need this machine to be accessible, you need to configure the output chain:
Iptables-t nat-a output-p tcp-d 127.0.0.1--dport 80-j REDIRECT--to-ports 8080Port forwarding between two machines
Forward all 81 port requests from this machine to 192.168.1.1:80
First, you want to enable the IPv4 forw
Java has been used for almost three years, but ashamed to say that Java is the Java language itself, at most, including a JVM, for the entire Java architecture is not very clear, there is now time to In-depth understanding of Java Virtual Machine This book reads, but also answers a lot of doubts. Java is not only a language, but a series of software and specifications formed by the technical system, we can be based on these technologies to construct
At work, when we need to install a virtual machine, it can be implemented through VMware software, with the following steps:VMware is a Virtual PC software that can virtual a new hardware environment on an existing operating system, equivalent to simulating a new PC to actually run two separate operating systems on a single PC.Official website: http://www.vmware.
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