# EL8安装光盘AppSteam里自带有10.x 版本的软件包 # postgresql-setup --initdb --unit postgresql # systemctl enable postgresql # systemctl start postgresql 如果想安装其他版本，可到官网查询安装方法 h�ps://www.postgresql.o org/download/linux/redhat/ 本文档选择PG-13版本作为讲解，使用el8系列的系统，x86_64平台 # yum install -y h�ps://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat- repo-latest.noarch.rpm #或者直接创建repo文件，内容如下 postgresql-13 ★第2章、设置数据存储路径 PostgreSQL 初始化数据库之后， 10版本的默认的数据目录是/var/lib/pgsql/ 13版本的默认的数据目录是/var/lib/pgsql/13/ 现在想修改为/data_pg/ 目录 ★PG-13版本 # systemctl stop postgresql-13 #先停止服务

• 逻辑复制 • 误操作恢复 2016Postgres中国用户大会 Postgres Conference China 2016 中国用户大会  Logminter • 利用多版本特性，尽可能恢复数据。 • 打开pg_log，查找误操作信息，进行还原。 • 利用pg_xlogdump查看wal日志信息，确定时 间点，然后恢复。 2016Postgres中国用户大会

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root ||/ 27.0 3 ! factorial 5 ! 120 !! factorial (prefix operator) !! 5 120 @ absolute value @ -5.0 5 & bitwise AND 91 & 15 11 | bitwise OR 32 | 3 35 # bitwise XOR 17 # 5 20 ~ bitwise NOT ~1 -2 in different jails.) FreeBSD versions before 4.0 work like OpenBSD (see below). NetBSD In NetBSD 5.0 and later, IPC parameters can be adjusted using sysctl, for example: $ sysctl -w kern.ipc.shmmax=16777216 This can be accomplished using the sysctl setting kern.ipc.shm_use_phys. NetBSD versions before 5.0 work like OpenBSD (see below), except that parameters should be set with the keyword options not option

root ||/ 27.0 3 ! factorial 5 ! 120 !! factorial (prefix operator) !! 5 120 @ absolute value @ -5.0 5 & bitwise AND 91 & 15 11 | bitwise OR 32 | 3 35 # bitwise XOR 17 # 5 20 ~ bitwise NOT ~1 -2 in different jails.) FreeBSD versions before 4.0 work like OpenBSD (see below). NetBSD In NetBSD 5.0 and later, IPC parameters can be adjusted using sysctl, for example: $ sysctl -w kern.ipc.shmmax=16777216 This can be accomplished using the sysctl setting kern.ipc.shm_use_phys. NetBSD versions before 5.0 work like OpenBSD (see below), except that parameters should be set with the keyword options not option

root ||/ 27.0 3 ! factorial 5 ! 120 !! factorial (prefix operator) !! 5 120 @ absolute value @ -5.0 5 & bitwise AND 91 & 15 11 | bitwise OR 32 | 3 35 # bitwise XOR 17 # 5 20 ~ bitwise NOT ~1 -2 4.0 work like OpenBSD (see below). 396 Chapter 17. Server Setup and Operation NetBSD In NetBSD 5.0 and later, IPC parameters can be adjusted using sysctl, for example: $ sysctl -w kern.ipc.shmmax=16777216 This can be accomplished using the sysctl setting kern.ipc.shm_use_phys. NetBSD versions before 5.0 work like OpenBSD (see below), except that parameters should be set with the keyword options not option

root ||/ 27.0 3 ! factorial 5 ! 120 !! factorial (prefix operator) !! 5 120 @ absolute value @ -5.0 5 & bitwise AND 91 & 15 11 | bitwise OR 32 | 3 35 # bitwise XOR 17 # 5 20 ~ bitwise NOT ~1 -2 in different jails.) FreeBSD versions before 4.0 work like OpenBSD (see below). NetBSD In NetBSD 5.0 and later, IPC parameters can be adjusted using sysctl, for example: $ sysctl -w kern.ipc.shmmax=16777216 This can be accomplished using the sysctl setting kern.ipc.shm_use_phys. NetBSD versions before 5.0 work like OpenBSD (see below), except that parameters should be set with the keyword options not option

root ||/ 27.0 3 ! factorial 5 ! 120 !! factorial (prefix operator) !! 5 120 @ absolute value @ -5.0 5 & bitwise AND 91 & 15 11 | bitwise OR 32 | 3 35 # bitwise XOR 17 # 5 20 ~ bitwise NOT ~1 -2 in different jails.) FreeBSD versions before 4.0 work like OpenBSD (see below). NetBSD In NetBSD 5.0 and later, IPC parameters can be adjusted using sysctl, for example: $ sysctl -w kern.ipc.shmmax=16777216 This can be accomplished using the sysctl setting kern.ipc.shm_use_phys. NetBSD versions before 5.0 work like OpenBSD (see below), except that parameters should be set with the keyword options not option

root ||/ 27.0 3 ! factorial 5 ! 120 !! factorial (prefix operator) !! 5 120 @ absolute value @ -5.0 5 & bitwise AND 91 & 15 11 | bitwise OR 32 | 3 35 # bitwise XOR 17 # 5 20 ~ bitwise NOT ~1 -2 in different jails.) FreeBSD versions before 4.0 work like OpenBSD (see below). NetBSD In NetBSD 5.0 and later, IPC parameters can be adjusted using sysctl, for example: $ sysctl -w kern.ipc.shmmax=16777216 This can be accomplished using the sysctl setting kern.ipc.shm_use_phys. NetBSD versions before 5.0 work like OpenBSD (see below), except that parameters should be set with the keyword options not option

root ||/ 27.0 3 ! factorial 5 ! 120 !! factorial (prefix operator) !! 5 120 @ absolute value @ -5.0 5 & bitwise AND 91 & 15 11 | bitwise OR 32 | 3 35 # bitwise XOR 17 # 5 20 ~ bitwise NOT ~1 -2 in different jails.) FreeBSD versions before 4.0 work like OpenBSD (see below). NetBSD In NetBSD 5.0 and later, IPC parameters can be adjusted using sysctl, for example: $ sysctl -w kern.ipc.shmmax=16777216 This can be accomplished using the sysctl setting kern.ipc.shm_use_phys. NetBSD versions before 5.0 work like OpenBSD (see below), except that parameters should be set with the keyword options not option