library.
Basic operations
To use external storage, the required permissions are in AndoridManifest.xml :
Starting with API 19/andorid 4.4/kitkat, you no longer need to explicitly declare these two permissions unless you want to read and write application data from other apps ( $appDataDir )
To determine the SD card available:/** * Check if the primary "external" storage
What's Kafka?
Kafka, originally developed by LinkedIn, is a distributed, partitioned, multiple-copy, multiple-subscriber, zookeeper-coordinated distributed logging system (also known as an MQ system), commonly used for Web/nginx logs, access logs, messaging services, and so on, LinkedIn contributed to the Apache Foundation in 2010 and became the top open source project.
1. Foreword
A commercial message queue performance is good or bad, and its file
Reference: http://blog.csdn.net/htl258/article/details/4106591,it is very useful.
Use mydb go -- 1. query the logical File Name of the current database: Select file_name (1) as 'file name 1', file_name (2) as 'file name 2'; -- or query by the following statement: -- Select name from sys. database_files/* file name 1
A file management feature is added to the project to allow users to maintain their own static HTML files. Found a ready-made online PHP file management tool on the Internet: webftp:http://down.chinaz.com/soft/30675.htm Some questions were found after downloading:
He must be logged in before he can use
No restrictions on uploaded
Tags: des style class Blog Code tarExperimental Purpose: Oracle Direct copy physical file migration, production library has similar construction requirements, so in the experimental environment simple verification. Lab Environment:a host: 192.168.1.200 Solaris10 + Oracle 11.2.0.1B Host: 192.168.1.186 SOLARIS101. Back up the ORACLE installation package ($ORACLE _base directory)Tar cvf Oracle.tar Oracle2. Close the library, backup parameter files, contr
Non-current online Log File fault recovery 1. ORA-00313 error when starting the database. ORA-00313: openfailedformembersofloggroup
Non-current online Log File fault recovery 1. ORA-00313 error when starting the database. ORA-00313: open failed for members of log group
Non-current
What is Kafka?
Kafka, originally developed by LinkedIn, is a distributed, partitioned, multi-replica, multi-subscriber, zookeeper-coordinated distributed log system (also known as an MQ system) that can be used for Web/nginx logs, access logs, messaging services, etc. LinkedIn contributed to the Apache Foundation and became the top open source project in 2010.
1. PrefaceThe performance of a commercial message queue is good or bad, and its file
%. Distributed Secure Storage For developers, distributed storage systems mean more complex system architecture design and more difficult technical implementations, butHttpUploader7 has never been easier. superior stability and availability Thanks to the global Distributed node network of cloud storage,HttpUploader7 can help enterprises achieve a stable transmiss
* Single-file version of the online Code Editor editor.php version: v1.21* Very easy to edit any text file on your website online, it is very useful for maintaining website and writing code online.* Password encryption Method:* MD5 (password + $ace)//$ace for CDN Mirror Addr
Add an online log file to the log group sql> ALTER DATABASE add logfile member '/u01/app/oracle/oradata/king/redo01c.log ' to group 1, '/u01/app/ Oracle/oradata/king/redo02c.log ' to group 2, '/u01/app/oracle/oradata/king/redo03c.log ' to group 3;sql>selectgroup#,status,type,memberfromv$logfile;group# StatusTSType MEMBER------------------------------------------------------------------------------------ 3
A few days ago SuSE 12 File system/vg01/lvora, mount point is/oracle, capacity is not enough, need to expand.The new space is mapped from a single HP storage. Because the mapped LUN was reclaimed from the Windows host and then mapped directly, the Windows partition information was found on Linux when it recognized the new LUN, causing Pvcreate to fail. So you have to manually delete the partitions on each n
Label:The Oracle EBS R12 server-side file structure is as follows:The top level directory is divided into1) inst--– configuration information and other information related to the entire EBS instance (instance)2) DB ——-Primary storage DB layer Information3) Apps ——-primarily application-level information1) First look at the situation of Inst_top2) Look at the contents of the database again3) Finally the cont
log file classification: redo log filesArchive log filesWarning log fileTrace log filesRedo_log_file file function:1) Maintain data consistency2) record the change operation in the databaseRedo_log_friles in groups, a group can have more than one member, sequentially loop write, a database to start at least 2 log groups, each group has at least one member, Redolog work in a multi-work manner.Log Switching:
Problem description: an error is returned when a full backup is performed on the database. Backup statement: usemastergobackupdatabasexxxx_stodiskF: DBBACKUPxxxx_S_20080124.bak; error message: Message 3007, level 16, status 1, row 1st cannot Back Up Files or file group sysft_test because it is not online.
Problem description: an error is returned when a full backup is performed on the database. Backup state
Objective:In our app development process basically will use the file storage, so file storage for us is quite familiar with, but since the release of Android 6.0, access to external sdcard based on the runtime permissions mechanism is required to dynamically request permission, So the previous direct SDcard root direct
Structured File Storage Technology and Application
SinceWindowsAfter the launch of the system,MicrosoftThe company has been committed to improving and adopting new file storage methods, of which structured storage is the most respected by Microsoft. This technology adopts t
After a few days of reading the Ext2 file system and the VFS section of the deep understanding of the Linux kernel, a little understanding of the storage structure of the point file in memory, but always confused the actual storage on the hard disk, especially the storage of
Experience summary:
Online logs are classified into current online logs and non-current online logs. the corruption of Non-current online logs is relatively simple. Generally, you can solve the problem by using the clear command.
Corrupt non-current online logs:1. Start the
Objective:This article is translated from a blog post that was involved in ZFS file system development, now Delphix company CTO, Adam Levinso (Adam Leventhal): Apfs detailed (Apfs in Detail).The Apfs file system is the latest file system that Apple is preparing to launch in 2017, following hfs+, which, according to existing public information, has many of the adv
Embedded systems are different from general-purpose PCs. Generally, they do not have storage devices such as hard disks. Instead, they use flash chips, small flash cards, and other storage devices designed for embedded systems, this article analyzes the commonly used storage devices in embedded systems and their management mechanisms, and introduces the commonly
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