how can I use more memory over 2G (ITS#2710)

[hmjia@263.net]

Full_Name: Michael Jia
Version: 2.1.18
OS: solaris 5.8
URL: 
Submission from: (NULL) (211.100.0.34)


I have run the slpad more than 1 years. In August, I want to change the
parameter in slapd.conf in order to speed up the search, but when the memory
used is above 2G, the slapd crashed. How can I do?

slapd.conf is like following:

database ldbm
suffix      "o=xyz1.net,c=cn"
rootdn      "cn=manager,o=xyz1.net,c=cn"
rootpw      secret
directory   /var/data/de/openldap/1
# Indices to maintain
index xerid pres,eq
index objectClass eq
cachesize 8000
dbcachesize 10000000
...
database ldbm
suffix      "o=xyz50.net,c=cn"
rootdn      "cn=manager,o=xyz50.net,c=cn"
rootpw      secret
directory   /var/data/de/openldap/50
# Indices to maintain
index xerid pres,eq
index objectClass eq
cachesize 8000
dbcachesize 10000000

about 50 databases.

Is there 64bit version of openldap?
any help?