Package: postgresql-16-pg-checksums Source: pg-checksums Version: 1.2-2.pgdg22.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 99 Depends: libc6 (>= 2.34), postgresql-16 Recommends: pg-checksums-doc Homepage: https://github.com/credativ/pg_checksums Priority: optional Section: database Filename: pool/main/p/pg-checksums/postgresql-16-pg-checksums_1.2-2.pgdg22.04+1_amd64.deb Size: 36640 SHA256: ecee66effa899f9ceaf5d5cee924679170463a1860445377fd52e52535ccf89c SHA1: 4141bfa5a02ebfcc2de554fa99b898285b8ebee1 MD5sum: 0c9605b3db5a3eb211fa2a84a7afb9c0 Description: Activate/deactivate/verify PostgreSQL data checksums 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.