DB_CHECKPOINT(1)

💖 db_checkpoint — bestie's guide to checkpointing ur transactions 💖

okay so this is the BerkeleyDB Utilities manual for the db_checkpoint utility, and honestly? it's giving "set it and forget it" main character energy ✨

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🌸 NAME 🌸

db_checkpoint — periodically checkpoint transactions 🎀

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✨ SYNOPSIS ✨

db_checkpoint [-1Vv] [-h home] [-k kbytes] [-L file] [-P password] [-p min]

that's it. that's the whole vibe. look at her go 💅

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🦋 DESCRIPTION 🦋

so like, db_checkpoint is a daemon process (yes bestie, a little background gremlin that just lives there) that monitors the database log and periodically calls DB_ENV->txn_checkpoint to checkpoint it. no cap, that's literally her whole job 🫶

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💜 OPTIONS 💜

• -1 — checkpoint the log once, no matter whether there's been any activity since the last checkpoint, and then dip. exit. gone. periodt 💅
• -h home — specify a home directory for the database environment. by default, the current working directory is used 🏠
• -k kbytes — checkpoint the database at least as often as every kbytes of log file are written 📝
• -L file — log the execution of the db_checkpoint utility to the specified file, in this exact format, where ### is the process ID and the date is the time the utility was started:

db_checkpoint: ### Wed Jun 15 01:23:45 EDT 1995

heads up bestie: this file gets removed if db_checkpoint exits gracefully. so if you see it hanging around, something went 😭

• -P password — specify an environment password. okay so listen: even though Berkeley DB utilities overwrite password strings as soon as possible, be aware there may be a window of vulnerability on systems where unprivileged users can see command-line arguments, or where utilities can't overwrite the memory containing the command-line arguments. it's giving "be careful" fr fr 🙈
• -p min — checkpoint the database at least every min minutes, but only if there's been any activity since the last checkpoint ⏰
• -V — write the library version number to the standard output, and exit 📌
• -v — write the time of each checkpoint attempt to the standard output 👀

⚠️ THE RULE: at least one of the -1, -k, and -p options must be specified. you cannot just run her naked, she needs a purpose bestie.

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The db_checkpoint utility uses a Berkeley DB environment — described for the -h option, or the environment variable DB_HOME, or just because the utility was run in a directory containing a Berkeley DB environment 🌈

In order to avoid environment corruption when using a Berkeley DB environment, db_checkpoint should always be given the chance to detach from the environment and exit gracefully. To cause db_checkpoint to release all environment resources and exit cleanly, send it an interrupt signal (SIGINT). like, just let her leave politely, she deserves that 🥺

The db_checkpoint utility does not attempt to create the Berkeley DB shared memory regions if they don't already exist. the application that creates the region should be started first, and once the region is created, the db_checkpoint utility should be started. order matters, iykyk 👑

The DB_ENV->txn_checkpoint method is the underlying method used by the db_checkpoint utility. see the db_checkpoint utility source code for an example of using DB_ENV->txn_checkpoint in a IEEE/ANSI Std 1003.1 (POSIX) environment 💻

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🍓 EXIT STATUS 🍓

The db_checkpoint utility exits 0 on success, and >0 if an error occurs. zero = slay, anything else = not slay 💀

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🧚 ENVIRONMENT 🧚

• DB_HOME — if the -h option is not specified and the environment variable DB_HOME is set, it is used as the path of the database home, as described in DB_ENV->open. she'll find her home one way or another 🏡

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🌟 SEE ALSO 🌟

db_archive(1) db_deadlock(1) db_dump(1) db_hotbackup(1) db_log_verify(1) db_load(1) db_printlog(1) db_recover(1) db_replicate(1) db_stat(1) db_tuner(1) db_upgrade(1) db_verify(1)

the whole squad, together, as they should be 🫶✨

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and that's the whole page bestie 💖 this one's from BerkeleyDB 5.3.28, dated 06 December 2016, and it's the DB_CHECKPOINT(1) manual — go forth and checkpoint responsibly, mwah 🎀💅