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- Securing Extensions 12141
- DuckDB has a powerful extension mechanism, which has the same privileges as the user running DuckDB's (parent) process. This introduces security considerations. Therefore, we recommend reviewing the configuration options listed on this page
...duckdb -unsigned in the CLI). It cannot be changed while the database is running. Security-related configuration settings lock themselves , i.e., it is only possible to restrict capabilities in the current process. For example, attempting the follow...ension repositories are 'allowed' , 'forbidden' (which also distrusts existing repositories) or 'undecided' (the default: blocks adding new repositories, but keeps trusting existing ones). While the database is running, the setting can only move from...oinstall_known_extensions = false; To disable autoloading known extensions, run: SET autoload_known_extensions = false; To lock this configuration, use the lock_configuration option : SET lock_configuration = true; Always Require Signed Extensions By... - https://man.mtool.work/duckdb/2.0/operations_manual/securing_duckdb/securing_ext...
- CHECKPOINT Statement 10741
- The CHECKPOINT statement synchronizes data in the write-ahead log (WAL) to the database data file. Examples Synchronize data in the default database: CHECKPOINT; Synchronize data in the specified database: CHECKPOINT file_db; Synchronize da
...ckDB versions, FORCE CHECKPOINT aborted any in-progress transactions. From v1.4, it waits until it can grab the checkpoint lock. Checkpointing In-Memory Tables Starting with v1.4.0, in-memory tables support checkpointing. This has two key benefits: I...KPOINT command will fail if there are any running transactions. Including FORCE will wait until it can grab the checkpoint lock and then execute the checkpoint operation. In DuckDB versions before v1.4, FORCE CHECKPOINT instead aborted any in-progres... - https://man.mtool.work/duckdb/2.0/sql/statements/checkpoint.html
- Securing DuckDB 10396
- DuckDB is a powerful analytical database engine. It can read and write files, access the network, load extensions, and use system resources. Like any powerful tool, these capabilities require appropriate configuration when working with sens
...working directory: Permission Error: Cannot access file "test.csv" - file system operations are disabled by configuration Locking Configurations Security-related configuration settings generally lock themselves for safety reasons. For example, while...source constraints. If you allow users to run SQL statements unrestricted on your own hardware, you might want to consider locking the configuration after your own configuration has finished using the following command: SET lock_configuration = true;...guration settings from being modified from that point onwards. To allow specific settings to remain configurable even when lock_configuration is enabled, use the allowed_configs option: SET allowed_configs = ['memory_limit', 'threads']; SET lock_conf... - https://man.mtool.work/duckdb/2.0/operations_manual/securing_duckdb/overview.htm...
- Configuration 7779
- DuckDB has a number of configuration options that can be used to change the behavior of the system. The configuration options can be set using either the SET statement or the PRAGMA statement . They can be reset to their original values usi
...tension repositories are 'allowed', 'forbidden' (which also distrusts existing repositories) or 'undecided' (the default: blocks adding new repositories, but keeps trusting existing ones). While the database is running the setting can only move from...g signatures. BOOLEAN false allowed_configs List of configuration options that are ALWAYS allowed to be changed, even when lock_configuration is true. VARCHAR[] [] allowed_directories List of directories, and directory prefixes, that are ALWAYS allow...which point we will skip writing to the WAL and only checkpoint. Skipping writing to the WAL means concurrent commits are blocked while the checkpoint is happening. UBIGINT 100000 auto_fallback_to_full_download Allows automatically falling back to fu... - https://man.mtool.work/duckdb/2.0/configuration/overview.html
- Python 7779
- The DuckDB Python package has its own repository at duckdb/duckdb-python and uses nanobind 3 to create Python bindings with DuckDB. Prerequisites This guide assumes: You have a full clone of the DuckDB Python package source, including its g
...To install the wheel, run: uv pip install dist/duckdb-*.whl Cleaning Build Artifacts uv cache clean rm -rf build .venv uv.lock IDE Setup (CLion) For CLion users, the project can be configured for C++ debugging of the Python extension: CMake Profile... - https://man.mtool.work/duckdb/2.0/dev/building/python.html
- Release Cycle 7433
- This document outlines the DuckDB and core extension release cycle framework. It is intended for developers working on DuckDB extensions to better understand the underlying processes. Overview DuckDB follows Semantic Versioning ( v<MAJOR>.<
...tensions , the release cycle is very simple. Since their code lives in the duckdb/duckdb repository, they move in complete lock-step with DuckDB. This means they share the same versioning and branching. In this sense they are not really extensions, b... - https://man.mtool.work/duckdb/2.0/dev/release_cycle.html
- Connect 7270
- Overview Every DuckDB feature reachable from Java starts with a Connection . This page covers the JDBC URL forms the driver accepts, how DuckDB and driver options are passed and which of them win, how connections come to share (or not share
...to false creates an isolated instance per connection. Disabling the cache for a file-backed database may cause local file lock conflicts if another connection has the same file open, and pinning an uncached instance with jdbc_pin_db does not make it...pool is independent of the JVM's threads: a single Statement.executeQuery() call can occupy every thread in the pool, and blocking JDBC calls from many application threads do not increase DuckDB's parallelism. The pool belongs to the database instanc...ds - external_threads background threads. In addition, DuckDB 2.0 runs a second pool of asynchronous threads dedicated to blocking I/O, such as HTTP requests to object storage (see Asynchronous I/O ). Its size is set by the async_threads option, whic... - https://man.mtool.work/duckdb/2.0/clients/java/connecting.html
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