I'm unable to create database cluster in Windows 2000 server. initdb returns error FATAL: could not create shared memory segment: No such file or directory any idea how to create cluster in Windows 2000 ? Task MAnager shows physical memory: Total: 392664 Available: 81860 System Cache: 157xxx If available physical memory is too low, how to increate it (decrease system cache) ? Andrus. C:\pgsql>bin\initdb -E=UTF8 -d -D data Running in debug mode. VERSION=8.1.3 PGDATA=data share_path=C:/pgsql/share PGPATH=C:/pgsql/bin POSTGRES_SUPERUSERNAME=postgres POSTGRES_BKI=C:/pgsql/share/postgres.bki POSTGRES_DESCR=C:/pgsql/share/postgres.description POSTGRESQL_CONF_SAMPLE=C:/pgsql/share/postgresql.conf.sample PG_HBA_SAMPLE=C:/pgsql/share/pg_hba.conf.sample PG_IDENT_SAMPLE=C:/pgsql/share/pg_ident.conf.sample The files belonging to this database system will be owned by user "postgres". This user must also own the server process. The database cluster will be initialized with locale Estonian_Estonia.1257. creating directory data ... ok creating directory data/global ... ok creating directory data/pg_xlog ... ok creating directory data/pg_xlog/archive_status ... ok creating directory data/pg_clog ... ok creating directory data/pg_subtrans ... ok creating directory data/pg_twophase ... ok creating directory data/pg_multixact/members ... ok creating directory data/pg_multixact/offsets ... ok creating directory data/base ... ok creating directory data/base/1 ... ok creating directory data/pg_tblspc ... ok selecting default max_connections ... 10 selecting default shared_buffers ... 50 creating configuration files ... ok creating template1 database in data/base/1 ... DEBUG: TZ "Europe/Helsinki" matc hes Windows timezone "FLE Daylight Time" DEBUG: invoking IpcMemoryCreate(size=1327104) DEBUG: mapped win32 error code 161 to 2 FATAL: could not create shared memory segment: No such file or directory DETAIL: Failed system call was shmget(key=1, size=1327104, 03600). DEBUG: proc_exit(1) DEBUG: shmem_exit(1) DEBUG: exit(1) child process was terminated by signal 1 initdb: removing data directory "data"