pg_waldump decodes and displays PostgreSQL write-ahead logsfordebugging.Options:-b,--bkp-details output detailed information about backup blocks-e,--end=RECPTRstop reading atWALlocationRECPTR-f,--follow keep retrying after reaching endofWAL-n,--limit=Nnumberofrecords to display-p,--path=PATHd...
做完后把状态设置为shut down。 in crash recovery:数据库实例非异常停止后,重新启动后,会先进行实例的恢复,在实例恢复时的状态就是此状态。 in archive recovery:Standby实例正常启动后,就是此状态。 in production:数据库实例正常启动后就是此状态。Standby数据库正常启动后不是此状态 pg_control last modified: ...
在计算机科学领域,WAL是Write Ahead Logging的首字母缩写,它是将数据改动和行为写入事务日志的协议或规则,而在PostgreSQL中,WAL是Write Ahead Log的首字母缩写。该术语是事务日志的同义词,用于表示将事务写入事务日志(WAL)相关的实现机制。虽然这有点难理解,但在本文中采用了Postgresql的定义。 WAL机制最初在7.1版中实...
在计算机科学领域,WAL是Write Ahead Logging的首字母缩写,它是将数据改动和行为写入事务日志的协议或规则,而在PostgreSQL中,WAL是Write Ahead Log的首字母缩写。该术语是事务日志的同义词,用于表示将事务写入事务日志(WAL)相关的实现机制。虽然这有点难理解,但在本文中采用了Postgresql的定义。 WAL机制最初在7.1版中实...
[译] 9. 预写日志(Write Ahead Logging-WAL) 原文地址:https://www.interdb.jp/pg/pgsql09.html 原文作者:Hironobu SUZUKI 事务日志是数据库的重要组成部分,因为所有的数据库管理系统都要求即使发生系统故障也不丢失任何数据。它是数据库系统中所有更改和操作的历史日志,以确保没有数据因故障而丢失,例如电源故障...
Rewind: Recovery write- ahead system for in-memory non-volatile data-structures. VLDB 2015.Andreas Chatzistergiou, Marcelo Cintra, and Stratis D. Viglas. Recovery write-ahead system for in-memory non-volatile data-structures. Proc. VLDB Endow., 8(5), January 2015. doi:10.14778/2735479.2735483....
2. The system of claim I above, wherein the transaction control system uses a write-ahead logging (WAL) protocol for recovery of the databases, such that records are stored in the log file before the modified objects are allowed to replace previous versions thereof in the database. ...
To achieve this goal in an efficient way, the persistence layer 346 can use a combination of write-ahead logs, shadow paging and savepoints. The persistence layer 346 can provide interfaces for writing and reading persisted data and it can also contain a logger component that manages a ...