Most likely you are inserting one per transaction. Set autocommit to
false and commit only after all the inserts are done.
-n.
On 27-04-2010 13:41, a.bhattacha...@sungard.com wrote:
Dear All Experts,
I am using in PostgreSQL 8.3.5 database on windows 64 bit OS.
However, I have a batch program written in Java which processes the
data and populates them into tables in Postgres database.
I have *622,000 number of records *but it is taking almost *4 and half
hours* to load these data into the tables.
I have a simple function in db which is being called from Java batch
program to populate the records into tables from flat files.
I have the below system configuration for my database server.
Database Server
*PostgreSQL v8.3.5*
Operating System
*Windows 2003 Server 64 bit, Service Pack 2*
CPU
*2 * Quad Core AMD Opteron Processor 2376 @ 2.29 GHz*
Memory
*16 GB RAM*
Disk Space
*total 2.5 TB [C drive -- 454 GB & D drive 1.99 TB]*
and I have set my postgresql.conf parameters as below.
======================================================================
#------------------------------------------------------------------------------
# RESOURCE USAGE (except WAL)
#------------------------------------------------------------------------------
# - Memory -
shared_buffers = 1GB
temp_buffers = 256MB
max_prepared_transactions = 100
work_mem = 512MB
maintenance_work_mem = 512MB
# - Free Space Map -
max_fsm_pages = 1600000
max_fsm_relations = 10000
'
#------------------------------------------------------------------------------
# WRITE AHEAD LOG
#------------------------------------------------------------------------------
wal_buffers = 5MB # min 32kB
checkpoint_segments = 32
checkpoint_completion_target = 0.9
#------------------------------------------------------------------------------
# QUERY TUNING
#------------------------------------------------------------------------------
# - Planner Method Configuration -
enable_hashagg = on
enable_hashjoin = on
enable_indexscan = on
enable_mergejoin = on
enable_nestloop = on
enable_seqscan = on
enable_sort = on
effective_cache_size = 8GB
========================================================================
Please advise me the best or optimum way setting these parameters to
achieve better performance.
Also note that, when I am setting my *shared_buffer = 2GB or high ,
*Postgres is throwing an error "/shared_buffer size cannot be more
than size_t/"
It would be very grateful, if anyone can help me on this.
Many thanks
