select top 10 postgres

"Editor's note" as an open source object-relational database, Postgres has been loved by many developers. Recently, Postgres officially released version 9.5, which has been a lot of repair and functional improvements. This article will share 10

BackgroundPostgreSQL logical backup, refers to online backup database data, DDL output as SQL statements, data can be in the form of SQL statements or fixed separators (row format) output. The backup does not affect the DML operation of the Backup

= 1. Machine = PL/Proxyhostname:h08-vm08.corp.cnb.yahoo.cominet addr:10.62.245.152Bcast:10.62.245.255Mask:255.255.254.0OS: Linux 2.6.9-42.ELsmpCPU:Intel(R) Xeon(R) CPU L5320 @ 1.86GHzMemTotal: 254772 kBPg_Dir: /home/y/pgsql/data/port =

The latest I/O statistics Tool in CentOS As a Linux system administrator, it is essential to count various types of IO. Iostat is obviously the most important statistical tool. However, iostat is not the focus of this article, because there are

Running out of disk space in the Pg_xlog directory is a fairly common Postgres problem. This important directory holds the WAL (Write Ahead Log) files. (WAL files contain a record of all changes made to the Database-see the link for more details).

Then read with me. PostgreSQL source Code (ix)--executor (the--scan node (top) of the query execution module), this chapter ends the remaining seven scan nodes. T_SubqueryScanState, T_FunctionScanState, T_ValuesScanState, T_CteScanState,

Hostname 10.1.9.191Port 22Username VrmsPassword CMCCLast Login:sat June 09:58:46 from 192.168.4.17? Vrms@service/home/vrms> suPassword: (rootroot)? Vrms@service/home/vrms> su? Vrms@service/home/vrms> rz (Upload, sz reverse to PC)RZ waiting to

Ps-e | grep ' Java '"To see all of the processesPs-aufPs-aux|more"" Kills the processKill PIDHttp://www.yuanma.org/data/2007/0516/article_2600.htm"" View portNetstat-an | grep 8081"" Closed portNetstat-an | grep 8081[Email protected] tomcat]#

Using SECURECRTFirst, the installation of CentOS Rzsz,1.yum Automatic Installation:Yum Install Lrzsz　　　　2. The manual installation method is as follows:2.1. Download software rzsz-3.48.tar.gzwget http://freeware.sgi.com/source/rzsz/rzsz-3.48.tar.gz

the file transfer protocols under SECURECR are ASCII, Xmodem, Ymodem, Zmodem   ASCII: This is the fastest transport protocol, but only text files can be transferred.    Xmodem: This ancient transmission protocol is slow, but due to the use of CRC