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In computer science, write-ahead logging (WAL) is a family of techniques for providing atomicity and durability (two of the ACID properties) in database systems. [ 1 ] A write ahead log is an append-only auxiliary disk-resident structure used for crash and transaction recovery.
pgaudit is a PostgreSQL extension that provides detailed session and/or object audit logging via the standard logging facility provided by PostgreSQL. [110] WAL-E WAL-E is a backup and restore tool for PostgreSQL that provides support for physical (WAL-based) backups, written in Python. [111] DBeaver
In particular, the logging mechanism is called write-ahead log (WAL) and allows durability by buffering changes to the disk before they are synchronized from the main memory. In this way, by reconstruction from the log file, all committed transactions are resilient to system-level failures, because they can be redone.
This flush is performed sequentially, ensuring high I/O efficiency by avoiding the costly random writes typical of traditional indexing methods. To maintain durability, the system may use a write-ahead log (WAL) that records all incoming writes before they are added to the memory buffer. This ensures that no data is lost in the event of a crash ...
Log shipping is the process of automating the backup of transaction log files on a primary (production) database server, and then restoring them onto a standby server. This technique is supported by Microsoft SQL Server, [1] 4D Server, [2] MySQL, [3] and PostgreSQL.
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Walmart Inc. president and CEO Doug McMillon is among the company's early users of drone delivery, which has faced a number of obstacles. Here, he delivers a keynote address during CES 2024 at The ...
Postgres-XL; Q. QUEL query languages; S. Slony-I; T. Truviso This page was last edited on 15 September 2015, at 12:29 (UTC). Text is available under the ...