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Re: Estouro de arquivo temporário - Chunk

Posted By: RAFAEL LIMA
Date: Tuesday, 4 October 2011, at 10:52 a.m.

In Response To: Re: Estouro de arquivo temporário - Chunk (Jairo Gubler)

Bom dia Jairo, tudo ok?

A versão do banco é "IBM Informix Dynamic Server Version 11.50.FC6WE".

Executei o comando: (onstat -c | grep DBSPACETEMP) o resultado foi este:
# DBSPACETEMP - The list of dbspaces used to store temporary
DBSPACETEMP prd_tmp_1,prd_tmp_2,prd_tmp_3,prd_tmp_4

Creio que a primeira linha seja um comentário, correto? E pelo que entendi, foram definidas 4 áreas temporárias.

Para monitorar os espaços utilizados pelas áreas temporárias estou usando o comando (onstat -d), que resultou nisto:
################################################################################
IBM Informix Dynamic Server Version 11.50.FC6WE -- On-Line (Prim) -- Up 23:27:27 -- 6160256 Kbytes

Dbspaces
address number flags fchunk nchunks pgsize flags owner name
15d495028 1 0x40001 1 1 2048 N B informix prd_root
15ee11cd8 2 0x40001 2 1 2048 N B informix prd_plog
15ee11e70 3 0x40001 3 1 2048 N B informix prd_llog
15ee10710 4 0x42001 4 1 2048 N TB informix prd_tmp_1
15ee108a8 5 0x42001 5 1 2048 N TB informix prd_tmp_2
15ee10a40 6 0x42001 6 1 2048 N TB informix prd_tmp_3
15ee10bd8 7 0x40001 7 1 2048 N B informix prd
15ee10d70 8 0x40001 8 1 2048 N B informix prd_sped
15ee12028 9 0x40001 10 1 2048 N B informix prd_admin
15ee121c0 10 0x42001 9 1 2048 N TB informix prd_tmp_4
10 active, 2047 maximum

Chunks
address chunk/dbs offset size free bpages flags pathname
15d4951c0 1 1 0 500000 495687 PO-B- /banco/prd/prd_root.000
15ee12358 2 2 0 250000 0 PO-B- /banco/prd/prd_plog.000
15ee12548 3 3 0 2000000 0 PO-B- /banco/prd/prd_llog.000
15ee12738 4 4 0 500000 496282 PO-B- /banco/prd/prd_tmp_1.000
15ee12928 5 5 0 500000 496919 PO-B- /banco/prd/prd_tmp_2.000
15ee12b18 6 6 0 500000 496600 PO-B- /banco/prd/prd_tmp_3.000
15ee12d08 7 7 0 45000000 7492915 PO-B- /banco/prd/prd.000
15ee15028 8 8 0 4500000 4010191 PO-B- /banco/prd/prd_sped.000
15ee15218 9 10 0 1000000 996454 PO-B- /banco/prd/prd_tmp_4.000
15ee15408 10 9 0 500000 449051 PO-B- /banco/prd/prd_admin.000
10 active, 32766 maximum

NOTE: The values in the "size" and "free" columns for DBspace chunks are

displayed in terms of "pgsize" of the DBspace to which they belong.

Expanded chunk capacity mode: always
################################################################################

Quando começo a executar select's das minhas VIEWS reparo que o espaço livre vai diminuindo, mais precisamente desta área:

15ee12d08 7 7 0 45000000 7492915 PO-B- /banco/prd/prd.000

O que ocorre, é que consigo executar minhas VIEWS, mas chega um ponto, normalmente final de mês, quando a empresa tem um volume bem maior de consultas, que há este estouro de arquivo temporário. E a única solução que eles encontraram é baixar o banco, reiniciar a máquina e subir novamente, acho que com isso a área temporária é zerada correto ?

Não sei se eles executam mais algum comando para liberar esta área, mas acredito que o procedimento seja este apenas.

Pelo que entendi, eles deveriam aumentar o tamanho destas áreas então ? (prd_tmp_1,prd_tmp_2,prd_tmp_3,prd_tmp_4).

Quanto ao driver JDBC, vou montar uma classe de exemplo, mas acredito que ele nem seja o maior problema neste caso, o driver que uso atualmente parece ser compatível com esta versão do banco, certo ?

Muito obrigado pela ajuda e desculpe pela falta de conhecimento,

Rafael Lima

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