Hi I installed the open source ERP Opentaps which have 802 tables and using PostgreSQL as backend, and also filled the tables with demo data.
When I browse the tables using PgAdmin3 I get messages saying that:
The estimated row count on the table "some_table" deviates significantly from the actual row count. You should run vacuum analyze.
So I do it again and again with each table that throws me the message until I get tired, then I went to the database's root and click on maintenance, vacuum analyze.
Then a long process begin, after that I continue browsing the tables but I'm still getting the messages, so I suppose that I'm not doing the vacuum correctly.
What I want It's to make auto vacuums in a general way, NOT table by table because there are 802, you know what I mean...
I edited my postgresql.conf like this, but I'm not sure if that's enough, take a look please and give some feed back please:
#---------------------------------------------------------------------------
# RUNTIME STATISTICS
#---------------------------------------------------------------------------
# - Statistics Monitoring -
#log_parser_stats = off
#log_planner_stats = off
#log_executor_stats = off
#log_statement_stats = off
# - Query/Index Statistics Collector -
stats_start_collector = on
#stats_command_string = off
#stats_block_level = off
stats_row_level = on
#stats_reset_on_server_start = off
#---------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS
#---------------------------------------------------------------------------
autovacuum = on # enable autovacuum subprocess?
#autovacuum_naptime = 60 # time between autovacuum runs, in secs
#autovacuum_vacuum_threshold = 1000 # min # of tuple updates before
# vacuum
#autovacuum_analyze_threshold = 500 # min # of tuple updates before analyze
#autovacuum_vacuum_scale_factor = 0.4 # fraction of rel size before vacuum
#autovacuum_analyze_scale_factor = 0.2 # fraction of rel size before analyze
#autovacuum_vacuum_cost_delay = -1 # default vacuum cost delay for autovac, -1 means use vacuum_cost_delay
#autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for autovac, -1 means use vacuum_cost_limit