diff --git a/doc/src/sgml/wal.sgml b/doc/src/sgml/wal.sgml index 02f576a1a99..f75527f764a 100644 --- a/doc/src/sgml/wal.sgml +++ b/doc/src/sgml/wal.sgml @@ -237,19 +237,19 @@ - By default, data pages are not protected by checksums, but this can optionally be - enabled for a cluster. When enabled, each data page will be ASSIGNED a - checksum that is updated when the page is written and verified each time + By default, data pages are not protected by checksums, but this can + optionally be enabled for a cluster. When enabled, each data page includes + a checksum that is updated when the page is written and verified each time the page is read. Only data pages are protected by checksums; internal data structures and temporary files are not. - Checksums verification is normally ENABLED when the cluster is initialized using initdb. They can also be enabled or disabled at a later time as an offline operation. Data checksums are enabled or disabled at the full cluster - level, and cannot be specified for individual databases or tables. + level, and cannot be specified individually for databases or tables. @@ -260,9 +260,9 @@ - When attempting to recover from corrupt data, it may be necessary to bypass - the checksum protection. To do this, temporarily set the configuration - parameter . + When attempting to recover from page corruptions, it may be necessary to + bypass the checksum protection. To do this, temporarily set the + configuration parameter .