(ITS#4240) back-meta loses "connection" with remote backend

[pfnguyen@hanhuy.com]

Full_Name: Perry Nguyen
Version: openldap-2.3.12
OS: Linux FC4
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (66.245.252.239)


After a long period of time (days or more) slapd needs to be restarted to be
able to retrieve results from a meta backend.  This does not seem to be related
to idletimeout as I've tested against another openldap server with the
idletimeout set to a low value (10 seconds) and back-meta was able to return
results after being timed out multiple times.

I don't know what's causing this right now, this is just an issue report.  My
only current workaround is to restart the ldap server once a day.

slapd.conf bit:
database        meta
readonly        on
nretries        forever
suffix          "ou=sso,ou=ecmbi,o=ibm"
uri             "ldaps://bluepages.ibm.com/c=us,ou=sso,ou=ecmbi,o=ibm"
suffixmassage   "c=us,ou=sso,ou=ecmbi,o=ibm" "c=us,ou=bluepages,o=ibm.com"
uri             "ldaps://bluepages.ibm.com/c=cn,ou=sso,ou=ecmbi,o=ibm"
suffixmassage   "c=cn,ou=sso,ou=ecmbi,o=ibm" "c=cn,ou=bluepages,o=ibm.com"
uri             "ldap:///ou=sso,ou=ecmbi,o=ibm";
suffixmassage   "ou=sso,ou=ecmbi,o=ibm" "ou=SSO Stub,ou=ecmbi,o=ibm"

command output:
[pfnguyen@wassup ~]$ ldapsearch -x notesshortname=pfnguyen 1.1
# extended LDIF
#
# LDAPv3
# base <> with scope sub
# filter: notesshortname=pfnguyen
# requesting: 1.1
#

# search result
search: 2
result: 0 Success
[pfnguyen@wassup ~]$ sudo /sbin/service ldap restart
Stopping slapd:                                            [  OK  ]
Stopping slurpd:                                           [  OK  ]
Starting slapd:                                            [  OK  ]
Starting slurpd:                                           [  OK  ]
[pfnguyen@wassup ~]$ !ldaps
ldapsearch -x notesshortname=pfnguyen 1.1
# extended LDIF
#
# LDAPv3
# base <> with scope sub
# filter: notesshortname=pfnguyen
# requesting: 1.1
#

# 828197897, us, sso, ecmbi, ibm
dn: uid=828197897,c=us,ou=sso,ou=ecmbi,o=ibm

# search result
search: 2
result: 0 Success

# numResponses: 2
# numEntries: 1