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- Profile and Monitor 11228
- Overview The JDBC driver exposes several ways to observe a running or completed query: cancelling and timing out queries, polling query progress, retrieving profiling output, and emitting memory-usage events through Java Flight Recorder . T
...ng profile = conn.getProfilingInformation(ProfilerPrintFormat.JSON); System.out.println(profile); } Memory Monitoring with JFR On a JFR-capable JVM , the driver can emit Java Flight Recorder events describing DuckDB's internal memory usage, so that...any JFR-aware tool — JDK Mission Control, the jfr command line tool, continuous profilers — can ingest DuckDB memory metrics along...side the rest of the JVM signal. The feature is strictly opt-in and is a silent no-op on JVMs without JFR support: nothing is emitted unless the application both sets the JDBC property on a connection and has an active JFR recor... - https://man.mtool.work/duckdb/2.0/clients/java/profiling.html
- Connect 7485
- 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
...aching . jdbc_ignore_unsupported_options Silently ignore unsupported connection options instead of throwing an error. jdbc_jfr_memory_monitor Enable JFR memory monitoring for the connection's database instance. See Memory Monitoring with JFR . sessi... - https://man.mtool.work/duckdb/2.0/clients/java/connecting.html
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