pg_waldump

options

map[description:Output detailed information about backup blocks. names:[-b --bkp-details] signature:-b --bkp-details source_url:/docs/18/pgwaldump.html summary:Output detailed information about backup blocks.], map[description:Only display records that modify the given block. The relation must also be provided with --relation or -R . names:[-B block --block= block] signature:-B block --block= block source_url:/docs/18/pgwaldump.html summary:Only display records that modify the given block. The relation must also be provided with --relation or -R .], map[description:Stop reading at the specified WAL location, instead of reading to the end of the log stream. names:[-e end --end= end] signature:-e end --end= end source_url:/docs/18/pgwaldump.html summary:Stop reading at the specified WAL location, instead of reading to the end of the log stream.], map[description:After reaching the end of valid WAL, keep polling once per second for new WAL to appear. names:[-f --follow] signature:-f --follow source_url:/docs/18/pgwaldump.html summary:After reaching the end of valid WAL, keep polling once per second for new WAL to appear.], map[description:Only display records that modify blocks in the given fork. The valid values are main for the main fork, fsm for the free space map, vm for the visibility map, and init for the init fork. names:[-F fork --fork= fork] signature:-F fork --fork= fork source_url:/docs/18/pgwaldump.html summary:Only display records that modify blocks in the given fork. The valid values are main for the main fork, fsm for the free space map, vm for the visibility map, and init for the init fork.], map[description:Display the specified number of records, then stop. names:[-n limit --limit= limit] signature:-n limit --limit= limit source_url:/docs/18/pgwaldump.html summary:Display the specified number of records, then stop.], map[description:Specifies a directory to search for WAL segment files or a directory with a pg_wal subdirectory that contains such files. The default is to search in the current directory, the pg_wal subdirectory of the current directory, and the pg_wal subdirectory of PGDATA . names:[-p path --path= path] signature:-p path --path= path source_url:/docs/18/pgwaldump.html summary:Specifies a directory to search for WAL segment files or a directory with a pg_wal subdirectory that contains such files. The default is to search in the current directory, the pg_wal subdirectory of the current directory, and the pg_wal subdirectory of PGDATA .], map[description:Do not print any output, except for errors. This option can be useful when you want to know whether a range of WAL records can be successfully parsed but don't care about the record contents. names:[-q --quiet] signature:-q --quiet source_url:/docs/18/pgwaldump.html summary:Do not print any output, except for errors. This option can be useful when you want to know whether a range of WAL records can be successfully parsed but don't care about the record contents.], map[description:Only display records generated by the specified resource manager. You can specify the option multiple times to select multiple resource managers. If list is passed as name, print a list of valid resource manager names, and exit. Extensions may define custom resource managers, but pg_waldump does not load the extension module and therefore does not recognize custom resource managers by name. Instead, you can specify the custom resource managers as custom### where ### is the three-digit resource manager ID. Names of this form will always be considered valid. names:[-r rmgr --rmgr= rmgr] signature:-r rmgr --rmgr= rmgr source_url:/docs/18/pgwaldump.html summary:Only display records generated by the specified resource manager. You can specify the option multiple times to select multiple resource managers. If list is passed as name, print a list of valid resource manager names, and exit.], map[description:Only display records that modify blocks in the given relation. The relation is specified with tablespace OID, database OID, and relfilenode separated by slashes, for example 1234/12345/12345 . This is the same format used for relations in the program's output. names:[-R tblspc / db / rel --relation= tblspc / db / rel] signature:-R tblspc / db / rel --relation= tblspc / db / rel source_url:/docs/18/pgwaldump.html summary:Only display records that modify blocks in the given relation. The relation is specified with tablespace OID, database OID, and relfilenode separated by slashes, for example 1234/12345/12345 . This is the same format used for relations in the program's output.], map[description:WAL location at which to start reading. The default is to start reading the first valid WAL record found in the earliest file found. names:[-s start --start= start] signature:-s start --start= start source_url:/docs/18/pgwaldump.html summary:WAL location at which to start reading. The default is to start reading the first valid WAL record found in the earliest file found.], map[description:Timeline from which to read WAL records. The default is to use the value in startseg , if that is specified; otherwise, the default is 1. The value can be specified in decimal or hexadecimal, for example 17 or 0x11 . names:[-t timeline --timeline= timeline] signature:-t timeline --timeline= timeline source_url:/docs/18/pgwaldump.html summary:Timeline from which to read WAL records. The default is to use the value in startseg , if that is specified; otherwise, the default is 1. The value can be specified in decimal or hexadecimal, for example 17 or 0x11 .], map[description:Print the pg_waldump version and exit. names:[-V --version] signature:-V --version source_url:/docs/18/pgwaldump.html summary:Print the pg_waldump version and exit.], map[description:Only display records that include full page images. names:[-w --fullpage] signature:-w --fullpage source_url:/docs/18/pgwaldump.html summary:Only display records that include full page images.], map[description:Only display records marked with the given transaction ID. names:[-x xid --xid= xid] signature:-x xid --xid= xid source_url:/docs/18/pgwaldump.html summary:Only display records marked with the given transaction ID.], map[description:Display summary statistics (number and size of records and full-page images) instead of individual records. Optionally generate statistics per-record instead of per-rmgr. If pg_waldump is terminated by signal SIGINT ( Control + C ), the summary of the statistics computed is displayed up to the termination point. This operation is not supported on Windows . names:[-z --stats[=record]] signature:-z --stats[=record] source_url:/docs/18/pgwaldump.html summary:Display summary statistics (number and size of records and full-page images) instead of individual records. Optionally generate statistics per-record instead of per-rmgr.], map[description:Save full page images found in the WAL records to the save_path directory. The images saved are subject to the same filtering and limiting criteria as the records displayed. The full page images are saved with the following file name format: TIMELINE - LSN . RELTABLESPACE . DATOID . RELNODE . BLKNO _ FORK The file names are composed of the following parts: Component Description TIMELINE The timeline of the WAL segment file where the record is located formatted as one 8-character hexadecimal number %08X LSN The LSN of the record with this image, formatted as two 8-character hexadecimal numbers %08X-%08X RELTABLESPACE tablespace OID of the block DATOID database OID of the block RELNODE filenode of the block BLKNO block number of the block FORK The name of the fork the full page image came from, such as main , fsm , vm , or init . names:[--save-fullpage= save_path] signature:--save-fullpage= save_path source_url:/docs/18/pgwaldump.html summary:Save full page images found in the WAL records to the save_path directory. The images saved are subject to the same filtering and limiting criteria as the records displayed.], map[description:Show help about pg_waldump command line arguments, and exit. names:[-? --help] signature:-? --help source_url:/docs/18/pgwaldump.html summary:Show help about pg_waldump command line arguments, and exit.]