Hello S,
I don't know if this is your problem but you need 3 pools for OpenACS. Here's a sample from one of my AOLservers:
#
# Database Pools: This is how AOLserver ``talks'' to the RDBMS. You need
# three for OpenACS: main, log, subquery. Make sure to replace ``yourdb''
# and ``yourpassword'' with the actual values for your db name and the
# password for it.
# AOLserver can have different pools connecting to different databases
# and even different different database servers.
#
ns_section ns/db/pools
ns_param pool1 "Pool 1"
ns_param pool2 "Pool 2"
ns_param pool3 "Pool 3"
ns_section ns/db/pool/pool1
ns_param maxidle 0
ns_param maxopen 0
ns_param connections 10
ns_param verbose $verbose
ns_param extendedtableinfo true
ns_param logsqlerrors $sqldebug
ns_param driver ora10
ns_param datasource $datasource
ns_param user $db_name
ns_param password $db_password
ns_section ns/db/pool/pool2
ns_param maxidle 0
ns_param maxopen 0
ns_param connections 10
ns_param verbose $verbose
ns_param extendedtableinfo true
ns_param logsqlerrors $sqldebug
ns_param driver ora10
ns_param datasource $datasource
ns_param user $db_name
ns_param password $db_password
ns_section ns/db/pool/pool3
ns_param maxidle 0
ns_param maxopen 0
ns_param connections 10
ns_param verbose $verbose
ns_param extendedtableinfo true
ns_param logsqlerrors $sqldebug
ns_param driver ora10
ns_param datasource $datasource
ns_param user $db_name
ns_param password $db_password
ns_section ns/server/${server}/db
ns_param pools "*"
ns_param defaultpool pool1
