Package: pg-checksums-doc Source: pg-checksums Version: 1.3-2.pgdg22.04+1 Architecture: all Maintainer: Debian PostgreSQL Maintainers Installed-Size: 16 Multi-Arch: foreign Homepage: https://github.com/credativ/pg_checksums Priority: optional Section: doc Filename: pool/main/p/pg-checksums/pg-checksums-doc_1.3-2.pgdg22.04+1_all.deb Size: 7396 SHA256: b9edde9c979be262ff5d0f90173f2e3ff9640bb7988a601da81b04ef12b9eab2 SHA1: 7a3ba008581cb8cf4e53de82c35b2db5869afdb1 MD5sum: 3aa930f480eb35a76feb113a8f686788 Description: Activate/deactivate/verify PostgreSQL data checksums (Documentation) Data checksums allow the PostgreSQL database server to identify I/O failures when reading data from storage. The checksums stored in the page header of each data page are compared to the computed checksum of the read data. . Data checksums need to be activated at instance creation time, all current versions of PostgreSQL including v11 do not allow activating (or deactivating) checksums afterwards. . pg_checksums_ext can activate or deactivate data checksums as long at the database cluster is shutdown cleanly. Activating checksums requires all database blocks to be read and all page headers to be updated, so can take a long time on a large database. Deactivating checksums only requires the cluster control file to be updated so is quick. . In addition, pg_checksums_ext can verify the checksums in an online cluster. . This package contains the manpage.