No special data types. The table is pretty large one with over 15GB. The
index is about 1.5 GB. Here's the table structure :
Column | Type | Modifiers
-----------------+-----------------------+-----------
county_id | numeric(5,0) | not null
batch_dt | numeric(8,0) | not null
batch_seq | numeric(5,0) | not null
mtg_seq_nbr | numeric(1,0) | not null
mtg_rec_dt | numeric(8,0) |
mtg_doc_nbr | character varying(12) |
mtg_rec_bk | character varying(6) |
mtg_rec_pg | character varying(6) |
mtg_amt | numeric(11,0) |
lndr_cd | character varying(10) |
lndr_nm | character varying(30) |
mtg_assm_ind | character(1) |
mtg_typ | character varying(5) |
adj_rate_ind | character(1) |
mtg_term_nbr | numeric(5,0) |
mtg_term_cd | character varying(4) |
mtg_due_dt | numeric(8,0) |
mtg_deed_typ | character varying(6) |
reverse_mtg_ind | character(1) |
refi_ind | character(1) |
conform_ind | character(1) |
cnstr_ln_ind | character(1) |
title_co_cd | character varying(5) |
state_id | numeric(5,0) |
msa | numeric(4,0) |
Indexes:
"uq_mortgage" UNIQUE, btree (county_id, batch_dt, batch_seq,
mtg_seq_nbr)
"mortgage_idxc_county_id_mtg_rec_dt" btree (county_id, mtg_rec_dt)
"mortgage_idxc_state_id_mtg_rec_dt" btree (state_id, mtg_rec_dt)
---------
Here's the test I did with maintenance_work_mem = 1GB:
mtrac=# show maintenance_work_mem ;
maintenance_work_mem
----------------------
1048576 <======
(1 row)
mtrac=#
mtrac=#
mtrac=# create index mort_ht on mortgage(county_id,mtg_rec_dt);
ERROR: out of memory <===
DETAIL: Failed on request of size 134217728. <===
............ Then I changed the parameter to 512 MB:
mtrac=# show maintenance_work_mem ;
maintenance_work_mem
----------------------
524288 <===
(1 row)
mtrac=# create index mort_ht_512 on mortgage(county_id,mtg_rec_dt);
CREATE INDEX
-----------------------------------------------
Regards,
----
Husam
-----Original Message-----
From: Tom Lane [mailto:tgl@xxxxxxxxxxxxx]
Sent: Tuesday, February 14, 2006 2:16 PM
To: Tomeh, Husam
Cc: pgsql-performance@xxxxxxxxxxxxxx
Subject: Re: [PERFORM] 0ut of Memory Error during Vacuum Analyze and
Create Index
"Tomeh, Husam" <htomeh@xxxxxxxxxxx> writes:
> I have run pg_dump and had no errors. I also got this error when
> creating one index but not another. When I lowered my
> maintenance_work_mem, the create index succeeded.
Create index too? Hm. That begins to sound more like a memory leak.
Do you have any custom data types or anything like that in this
table? Can you put together a self-contained test case using dummy
data?
regards, tom lane
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