This document appears to be notes from a presentation on PostgreSQL. It discusses various versions of PostgreSQL including releases 9.2.4, 9.1.9, 9.0.13 and 8.4.17. It covers new features between versions such as synchronous replication, unlogged tables, foreign tables, and JSON support. Upcoming features in version 9.3 are mentioned like materialized views, parallel pg_dump, and logical replication. Challenges with replication management and high availability are also noted. The presentation concludes with a question and answer session.
24. POSIX Shared memory
FATAL: could not create shared memory segment: Invalid argument
DETAIL: Failed system call was shmget(key=5432001, size=37879808, 03600).
HINT: This error usually means that PostgreSQL's request for a shared
memory segment exceeded your kernel's SHMMAX parameter.
Thursday, April 18, 13