terabyte to megabyte

command on the existing system dump, the dump is not considered to be the latest one. Errpt error E87EF1BE Solution E87EF1BE 0926082807 p o dumpcheck The largest dump device is too small.Information. It is determined that the lg_dumplv capacity for storing dump files is insufficient. Generally, the recommended dump device value is 1.5 times the sysdumpdev-e value.The steps for resizing are as follows:1. view the estimated lg_dumplv size.# Sysdumpdev-e0453-041 Estimated dump size in bytes:

false; } } } returnDir.delete (); } //Get File Size//Context.getexternalfilesdir ()-sdcard/android/data/your app's package name/files/directory, usually put some long-time saved data//Context.getexternalcachedir ()-sdcard/android/data/your app package name/cache/directory, typically storing temporary cache data Public Static LongGetfoldersize (File file)throwsException {LongSize = 0; Try{file[] fileList=File.listfiles (); for(inti = 0; i ) { //If

. Yahoo! Opened an independent team to goug cutting specializing in the development of Hadoop.In January 2008, Hadoop became the top project for Apache. Hadoop was then successfully applied to other companies, including Last.fm, Facebook, the New York Times, and so on.In February 2008, Yahoo! announced that its search engine products were deployed on a Hadoop cluster with 10,000 cores.In April 2008, Hadoop broke the world record, known as the fastest system for sorting 1TB data. For a record of

SSDs Multiple index types (b-Tree, R-Tree, hash, full-text, etc.) Cost-based Optimizer Diagnostics and SQL Tracing Optimizer tracking JSON explanation OLTP and Transactions Acid Trading Commit, Roll back FOREIGN key Referential integrity Row-level locking Customizable lock Isolation Level Distributed Transactions (XA) Snapshot isolation Repeatable reads (Read

Tags: Oracle training Oracle Tutorial Oracle video Oracle Video tutorial Oracle Database tutorialOracle Video Tutorial Goals Oracle Video tutorial, wind Brother this set of Oracle Tutorial training learning how Oracle database design an Rman backup strategy for a terabyte database, Rman Backup and recovery case-lost all files, lost individual data files, lost entire data and system table space, Loss of control files and parameter files, storage of c

. Job:counters:49file System Countersfile:number of bytes Read=162file:number of bytes Written=497579file:number of Rea D Operations=0file:number of large read operations=0file:number of write operations=0hdfs:number of bytes Read=233hdfs: Number of bytes Written=62hdfs:number of read Operations=12hdfs:number of large read Operations=0hdfs:number of write Operations=6job counterslaunched map tasks=1launched reduce tasks=3data-local map tasks=1total time spent by all maps in O Ccupied Slots (ms)

Hard disk is one of the important parts of the computer, not only expensive, stored information is priceless, therefore, each purchase of computer users want to choose a cost-effective, stable performance of a good hard drive, and in a period of time to meet their own storage needs. Speed, capacity and security are the three major factors that weigh hard drives. Bigger, faster, safer, cheaper is always the direction of hard disk development. The purchase of hard disk should first be considered f

, extended partition, logical partition:Capacity of the hard disk = capacity of primary partition + capacity of extended partitionCapacity of the extended partition = The sum of the capacity of each logical partitionA physical hard disk can only have: one to four primary partitions (but only one of which is the active primary partition), or one to three primary partitions, and one extended partition. correspond to HDA1,HDA2,HDA3,HDA4 respectively.Refer to:http://www.cnblogs.com/lixuwu/p/6100531.

What is the storage unit of a computer? Computer storage units are generally expressed in bit, Byte, KB, MB, GB, TB, PB, EB, ZB, BB, We often refer to the byte abbreviation as B and ask K for the KB abbreviation. What a few k, what a few B. Two, what is their conversion relationship? 1, the smallest unit in which the computer stores information: bit bit (bit) (Binary Digits): holds a binary number, that is, 0 or 1, the smallest storage unit. 2, computer storage capacity basic unit is by

operational spending issues and potential risks into account. "Capital spending can be paid in a lump sum, but operating expenses include power, refrigeration and manpower (costs are rising) and costs are moving more than the hardware itself," he said. ” HDS Company advisor David Merrill created the theory a few years ago, based on theories of information economics Marilyn Parker and Robert Benson (Marilyn Parker and Robert Bensson), to consider storage as an integral investment, Unlike many

:00c164fe00004c0000000110a1021713.66 Permission:read/write VG State:active/complete LV STATE:OPENED/SYNCD TYPE:JFS WRITE Verify:off MAX lps:512 PP size:256 megabyte (s) Copies:1 SCHED Policy:parallel Lps:10 pps:10 Stale pps:0 BB policy:relocatable Inter-policy:minimum Relocatable:yes Intra-policy:middle UPPER bound:16 MOUNT point:n/a Label:none MIRROR WRITE consistency:on/active Each LP COPY on A separate PV?: Yes Serialize IO?: NO Device

Tags: des style http io os ar using Java forSubject:Currently the most popular version of J2SDK is the 1.3 series. Developers who use this version need to use the Randomaccessfile class for random file access. Its I/O performance is far from similar performance in other common development languages, which seriously affects the operational efficiency of the program.Developers urgently need to improve efficiency, the following analysis of Randomaccessfile and other file class source code, find out

lvdata0315 Logical volume: lvdata0309 volume group: datavg09 Lv identifier: 0037de1d4154c0000000105cd3b6816. 11 PERMISSION: read/write Vg state: active/complete lv state: opened/syncd TYPE: raw write verify: off MAX LPs: 512 pp size: 64 megabyte (s) COPIES: 1 sched policy: parallel LPs: 64 PPs: 64 STALE PPs: 0 bb policy: relocatable INTER-POLICY: minimum RELOCATABLE: yes INTRA-POLICY: middle upper bound: 32. Mount point: N/a label: None Mirror write

READ = 94File: number of bytes written = 185387File: Number of read Operations = 0File: Number of large read Operations = 0File: Number of write operations = 0HDFS: number of bytes READ = 1051HDFS: number of bytes written = 43HDFS: Number of read Operations = 6HDFS: Number of large read Operations = 0HDFS: Number of write operations = 2Job countersLaunched map tasks = 1Launched reduce tasks = 1Data-local map tasks = 1Total time spent by all maps in occupied slots (MS) = 5812Total time spent by

Original link:Http://www.cnblogs.com/promise6522/archive/2012/05/27/2520028.htmlThe writing is very good and very detailed. Summary: Fsync need sync file modification and metadata; Fdatasync only sync metadata when necessary to save a file sync operation. Berkeley DB ensures that Fdatasync does not go to sync metadata by pre-setting the log file size. Here is a simple list of the corresponding BDB code:OS/OS_FSYNC.C:__os_fsync ()if(Db_global (j_fsync)! =NULL) ret= Db_global (J_

collection -xx:softreflrupolicymspermb SoftReference survival time in free space per megabyte of heap 1s Softly reachable objects would remain alive for some amount of time after the last time they were referenced. The default value is one second of lifetime per free megabyte in the heap -xx:pretenuresizethreshold Objects more than how large are d

Add logical Volume times error on AIX 0516-787 extendlv:maximum allocation for logical volume JDELV02 is 512.When adding a logical volume to AIX using the chfs-a size=xx/fs command,Sometimes increase to a certain size, will be reported 0516-787 extendlv:maximum allocation for logical volume JDELV02 is 512. Such a mistakeThis is mainly because the logical volume allows the maximum number of logical partitions to be 512 by default, so when the logical volume size exceeds this limit, 0516 is report

-xx:+usebiasedlocking Performance improvement of lock mechanism -xnoclassgc Disable garbage collection -xx:softreflrupolicymspermb SoftReference survival time in free space per megabyte of heap 1s Softly reachable objects would remain alive for some amount of time after the last time they were referenced. The default value is one second of lifetime

: datavg09Lv identifier: 0037de1d4154c0000000105cd3b6816. 11 PERMISSION: read/writeVg state: active/complete lv state: opened/syncdTYPE: raw write verify: offMAX LPs: 512 pp size: 64 megabyte (s)COPIES: 1 sched policy: parallelLPs: 64 PPs: 64STALE PPs: 0 bb policy: relocatableINTER-POLICY: minimum RELOCATABLE: yesINTRA-POLICY: middle upper bound: 32.Mount point: N/a label: NoneMirror write consistency: on/ACTIVEEach lp copy on a separate pv? : YesWe c

;//Show download Total size path = Environment.getexternalstoragedirectory (). GetPath ();//Get SD card path Httputils HTTP =NewHttputils ();/** * URL Download path target download file save path Autoresume support Breakpoint Continuation*/HttpHandler handler =Http.download ("Http://101.200.142.201:8080/tqyb/dancer.avi", Path +"/dancer.avi",True/*If the destination file exists, then the unfinished portion continues to download.*/,True/*If the file name is obtained from the request return informa