Deployment
Deploy and upgrade DolphinDB on premise or in the cloud
Database
Design and configure DolphinDB databases
Streaming
Publish, subscribe to, and process streaming data
Migration
Import and migrate data from various data sources to DolphinDB databases
Maintenance
Database maintenance and system management
Programming Guide
DolphinDB scripting language and SQL reference
Function References
Reference for all built-in functions
API & Connector
API in different languages for users to call DolphinDB from their programs
Plugins
Guidance on the use of plugins and plugin development for multiple application scenarios
Tutorials
Tutorials on database concepts and application scenarios
Release Notes
Release notes and compatibility changes for DolphinDB server, plugins and APIs

S00004

Error Code

S00004

Couldn't create a socket with error code <errno>. RefId:S00004

Permission to create a socket is denied.
The per-process limit on the number of open file descriptors has been reached.
Insufficient memory is available. The socket cannot be created until sufficient resources are freed.

For more reasons for the failure to create a socket, see socket(2) - Linux manual page.

Analyze and troubleshoot the issue based on the causes.