6.3 备份数据库 注:利用 pg_dump/pg_dumpall 对数据库进行备份,保证升级中遇到各种问题后以便回退。 /postgresql/pg15/bin/pg_dumpall > pgdumpallfull 6.4 升级检查 [postgres@node1postgresql-16.0]$ pg_upgrade-b/postgresql/pg15/bin/-B/postgresql/pg16/bin/-d/postgresql/pgdata/-D/postgresql/pgdata...
1)按用户导 expdp user/xxxxxx directory=DB_BAKUP dumpfile=xxxx.dmp logfile=expdb.log version=11.0.0; 2)并行进程parallel expdp user/xxxxxx directory=DB_BAKUP dumpfile=xxxx.dmp logfile=expdb.log version=11.0.0 parallel=40 job_name=xxxx; 3)按表名导 expdp user/xxxxxx directory=DB_BAKUP TA...
基于数据库工程师专业的经验,我已经认识到如果仅仅凭着数据库的大小SIZE来决定数据库的备份的策略,并不是一件明智的事情。虽然对于某些情况,将在线数据和逻辑数据(pg_dump/pg_dumpall)结合起来是一个好主意,但是应该考虑它是什么类型的数据,以及在灾难性的情况下准备损失多少数据。 1 对关键业务数据库和生产数据库...
pg_dump -h localhost -p 5432 -U postgres -F c -b -v -f mydb.backup(自定义文件名) mydb(库名) 1. 备份某个database,备份结果以SQL文本格式输出,输出结果要包含CREATE DATABASE 语句: pg_dump -h localhost -p 5432 -U someuser -C -F p -b -v -f mydb.sql mydb 1. 备份某个databa...
1.pg_dump导入导出(数据量不大时使用) postgres用户登录 $ pg_dumpall > db_export.out $ env|grep LANG LANG=en_US.UTF-8 如果数据库字符集为en_US.UTF-8,系统字符集为zh_CN.UTF-8 导入步骤为 postgres用户登录 $export LANG=en_US.UTF-8 ...
postgres->postgres@[local]:5432=## pg_waldump查看wal文件内容${PGHOME}/bin/pg_waldump 000000010000000000000007|more# 切换Wal日志SELECT pg_switch_wal(); 1.5.2.4 WAL Segment file内部结构 WAL segment file内部划分为N个page(Block),每个page大小为8192 Bytes即8K,每个WAL segment file第1个page的header...
$ ceph pg stat 1416 pgs: 6 active+clean+remapped, 1288 active+clean, 3 stale+active+clean, 119 active+undersized+degraded; 74940 MB data, 250 GB used, 185 TB / 185 TB avail; 1292/48152 objects degraded (2.683%) $ ceph pg dump | grep remapped dumped all 13.cd 0 0 0 0 0 0 ...
How to use pg_dump to back up a single database,PolarDB:pg_dump is a logical backup tool provided by PolarDB for PostgreSQL (Compatible with Oracle). It is used to back up a database in a cluster into script files or archive files.
If you are doing a pg_dump/pg_restore and you've upgraded pg_partman in place from previous versions, it is recommended you use the --column-inserts option when dumping and/or restoring pg_partman's configuration tables. This is due to ordering of the configuration columns possibly being di...
0 2 * * * /u01/dbbak/script/rman_full.sh 1.6 备份删除 [oracle@OEL7 ~]$ rman target / RMAN> show all; --备份策略调整,备份保留7天 CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS; 2.Oracle逻辑备份 2.1 生成目录 [oracle@OEL7 ~]$ mkdir -p /home/oracle/backup/dump ...