Segue em anexo a estatísticas do banco de dados.

max_connections = 100
shared_buffers = 32MB work_mem = 1MB

Tenho 50 no máximo 60 usuários conectados.

Máquina      :HP
Processado :XEON  1.80 Hz
Memoria     :1GB
HD             :70GB espelhado "SCSI"
Banco :3 base uma com 3 GB outras 4 GB e a ultima 2 um total 9 GB de BD.


Um detalhe importante é que sempre tenho que reiniciar o servidor as 22:00 horas para voltar a funcionar.
38605   banco002        3844    58718   002_norma       <IDLE> in transaction   
f       2008-09-16 10:38:39.093-03      2008-09-16 08:13:40.64-03       
10.0.0.20       1045
38605   banco002        676     58699   002_normede     <IDLE> in transaction   
f       2008-09-16 10:50:24.25-03       2008-09-16 07:56:45.625-03      
10.0.0.188      1106
38605   banco002        3108    58706   002_edvan       <IDLE> in transaction   
f       2008-09-16 10:52:45.968-03      2008-09-16 07:52:31.812-03      
10.0.0.185      1080
29669   banco001        3056    58698   001_roberval    <IDLE> in transaction   
f       2008-09-16 10:11:21.828-03      2008-09-16 07:52:28.515-03      
10.0.0.28       1064
29669   banco001        2160    58714   001_rosecobranca        <IDLE> in 
transaction   f       2008-09-16 09:38:06.75-03       2008-09-16 
09:37:33.937-03      10.0.0.201      1643
38605   banco002        3248    58697   002_roberval    <IDLE> in transaction   
f       2008-09-16 10:45:56.546-03      2008-09-16 07:52:41.39-03       
10.0.0.28       1076
38605   banco002        3272    58689   002_edson       <IDLE> in transaction   
f       2008-09-16 10:55:00.171-03      2008-09-16 07:57:37.765-03      
10.0.0.41       1086
38605   banco002        148     58697   002_roberval    <IDLE> in transaction   
f       2008-09-16 10:50:09.812-03      2008-09-16 07:52:53.578-03      
10.0.0.28       1091
29669   banco001        2008    58691   001_edsonluiz   <IDLE> in transaction   
f       2008-09-16 10:50:02.343-03      2008-09-16 07:57:05.578-03      
10.0.0.41       1083
38605   banco002        2752    58706   002_edvan       <IDLE> in transaction   
f       2008-09-16 10:52:48.156-03      2008-09-16 07:57:01.765-03      
10.0.0.185      1106
38605   banco002        2920    58689   002_edson       <IDLE> in transaction   
f       2008-09-16 10:50:39.156-03      2008-09-16 07:57:13.531-03      
10.10.1.211     1090
38605   banco002        944     58687   002_raphael     <IDLE> in transaction   
f       2008-09-16 10:45:32.39-03       2008-09-16 08:13:51.171-03      
10.0.0.193      1085
38605   banco002        1992    58696   002_nivia       <IDLE> in transaction   
f       2008-09-16 10:40:59.078-03      2008-09-16 08:12:10.218-03      
10.0.0.186      1182
29669   banco001        3680    58691   001_edsonluiz   <IDLE> in transaction   
f       2008-09-16 10:37:58.39-03       2008-09-16 07:58:35.171-03      
10.10.1.211     1133
38605   banco002        3812    58689   002_edson       <IDLE> in transaction   
f       2008-09-16 07:59:07.953-03      2008-09-16 07:59:07.859-03      
10.10.1.211     1142
38605   banco002        2836    58751   002_juscelino   <IDLE> in transaction   
f       2008-09-16 10:49:38.234-03      2008-09-16 08:00:20.546-03      
10.10.1.107     1063
38605   banco002        1660    58684   002_tais        <IDLE> in transaction   
f       2008-09-16 10:48:01.437-03      2008-09-16 08:01:54.187-03      
10.0.0.44       1090
38605   banco002        3480    58693   002_gustavo     <IDLE> in transaction   
f       2008-09-16 10:22:02.046-03      2008-09-16 08:01:52-03  10.0.0.195      
1080
38605   banco002        2332    58690   002_rose        <IDLE> in transaction   
f       2008-09-16 10:54:15.375-03      2008-09-16 08:00:04.656-03      
10.0.0.201      1070
38605   banco002        3620    58716   002_janusa      <IDLE> in transaction   
f       2008-09-16 10:32:16.515-03      2008-09-16 09:58:04.781-03      
10.10.1.35      1993
38605   banco002        3372    58706   002_edvan       <IDLE> in transaction   
f       2008-09-16 10:45:01.484-03      2008-09-16 08:25:44.171-03      
10.10.1.249     2290
38605   banco002        1884    58690   002_rose        <IDLE> in transaction   
f       2008-09-16 10:43:37.203-03      2008-09-16 08:00:39.578-03      
10.0.0.201      1094
38605   banco002        3892    58683   002_henrique    <IDLE> in transaction   
f       2008-09-16 10:53:38.343-03      2008-09-16 08:02:54.843-03      
10.0.0.47       1078
38605   banco002        2900    58683   002_henrique    <IDLE> in transaction   
f       2008-09-16 08:04:20.781-03      2008-09-16 08:04:20.718-03      
10.0.0.47       1088
38605   banco002        4056    58705   002_jeane       <IDLE> in transaction   
f       2008-09-16 10:48:19.578-03      2008-09-16 08:09:04.375-03      
10.0.0.12       1097
38605   banco002        4080    58692   002_lay <IDLE> in transaction   f       
2008-09-16 10:54:44.609-03      2008-09-16 10:51:48.546-03      10.0.0.136      
1820
38605   banco002        3908    58681   002_milena      <IDLE> in transaction   
f       2008-09-16 10:51:32.281-03      2008-09-16 08:08:46.328-03      
10.0.0.44       1161
38605   banco002        1132    58693   002_gustavo     <IDLE> in transaction   
f       2008-09-16 10:52:21.609-03      2008-09-16 08:09:40.781-03      
10.0.0.195      1335
38605   banco002        1648    58694   002_sandra      <IDLE> in transaction   
f       2008-09-16 10:54:54.093-03      2008-09-16 08:12:45.328-03      
10.10.1.26      1363
38605   banco002        3044    58687   002_raphael     <IDLE> in transaction   
f       2008-09-16 10:54:34.875-03      2008-09-16 08:14:06.953-03      
10.0.0.193      1094
29669   banco001        2028    58709   001_janusa      <IDLE> in transaction   
f       2008-09-16 09:59:36.718-03      2008-09-16 09:59:28.984-03      
10.10.1.35      2017
38605   banco002        3828    59085   002_patricia    <IDLE> in transaction   
f       2008-09-16 10:54:35.125-03      2008-09-16 10:54:01.859-03      
10.0.0.79       1320
38605   banco002        3364    58701   002_carmen      <IDLE> in transaction   
f       2008-09-16 09:01:03.125-03      2008-09-16 09:00:30.046-03      
10.0.0.53       2068
38605   banco002        3592    58700   002_janine      <IDLE> in transaction   
f       2008-09-16 10:51:43.39-03       2008-09-16 10:17:58.468-03      
10.0.0.102      1115
38605   banco002        1156    58700   002_janine      <IDLE> in transaction   
f       2008-09-16 10:52:58.312-03      2008-09-16 10:15:07.093-03      
10.0.0.102      1066
38605   banco002        3008    58808   002_severo      <IDLE> in transaction   
f       2008-09-16 10:21:35.609-03      2008-09-16 10:21:03.187-03      
10.0.0.219      1187
29669   banco001        740     58710   001_janine      <IDLE> in transaction   
f       2008-09-16 10:54:50.812-03      2008-09-16 10:54:15.171-03      
10.0.0.102      1545
10819   postgres        3472    10      acesse  <IDLE>  f       2008-09-16 
10:48:04.125-03      2008-09-16 10:47:58.765-03      127.0.0.1       3842
38605   banco002        2456    10      acesse  <IDLE> in transaction   f       
2008-09-16 10:48:44.75-03       2008-09-16 10:48:44.171-03      10.10.1.11      
49271
38605   banco002        2420    10      acesse  <IDLE>  f       2008-09-16 
10:48:04.015-03      2008-09-16 10:48:03.906-03      127.0.0.1       3843
38605   banco002        1812    10      acesse  copy (select * from 
pg_stat_activity) to 'E:\\\\act.txt'        f       2008-09-16 10:55:00.187-03  
    2008-09-16 10:48:05.312-03      127.0.0.1       3844
38605   banco002        928     58703   002_dirceu      <IDLE> in transaction   
f       2008-09-16 10:54:38.89-03       2008-09-16 10:51:21.953-03      
10.10.1.246     1048
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