Security Software

hi, I have an ldap crash.. nothing in the error logs.. but the core file has entries like:

nsslapd-rewrite-rfc1274
startup
The default password storage scheme SSHA could not be read or was not found in the file %s. It is mandatory.
SSL
unknown
new %sconnection on %d
PR_SetNetAddr() failed error %d (%s)
PR_SetNetAddr() failed error %d (%s)
conn=%d fd=%d slot=%d %sconnection from %s to %s
init_op_threads: PR_NewLock failed error %d (%s)
init_op_threads: PR_NewLock failed error %d (%s)
init_op_threads: PR_NewCondVar failed error %d (%s)
PR_CreateThread failed error %d (%s)
2.16.840.1.113730.3.4.4
conn=%d op=%d %s
need new password
ignoring unknown LDAP request (conn=%d, tag=0x%lx)
connection
conn=%d fd=%d Attempt to release connection that is not aquired
connection
conn=%d fd=%d Attempt to acquire connection in the closing state
op_thread received shutdown signal
pb is null
ber_get_int returns 0x%lx
ber_peek_tag returns 0x%lx
Attempted operation %d from within bulk import
could not acquire lock in connection_activity as conn %d closing fd=%d
add_pb
get_pb
get_pb: the work queue is empty.
slapd shutting down - signaling operation threads
connection_remove_operation: can't find op %d
connection
conn=%d fd=%d Incoming BER Element was %ld bytes, max allowable %ld. Use nsslapd-maxbersize attribute in cn=config to increase.
conn=%d op=%d fd=%d closed error %d (%s) - %s
conn=%d op=%d fd=%d closed - %s
PR_Accept() failed, error %d (%s)
no port to listen on
Unable to create time thread - Shutting Down (error %d - %s)
PR_Poll() failed, error %d (%s)
slapd shutting down - waiting for %d threads to terminate
listener could not clear signal pipe, error %d (%s)
PR_Poll() failed, error %d (%s)
slapd shutting down - waiting for %d threads to terminate
slapd shutting down - waiting for backends to close down
slapd shutting down - backends closed down
listener could not write to signal pipe %d
listener got signaled
listener could not clear signal pipe
Not listening for new connections - too many fds open
Listening for new connections again
listening for connections on %d
listening for SSL connections on %d
POLL_FN() says connection on sd %d is bad (closing)
read activity on %d
connection_activity: abandoning conn %d as fd=%d is already closing
slapd_poll(%d) error %d (%s)
slapd_poll(%d) timed out
SSL PR_Recv(%d) error %d (%s)
SSL PR_Recv(%d) 0 (EOF)
SSL PR_Write(%d) error %d (%s)
SSL PR_Write(%d) 0
PR_Recv(%d) error %d (%s)
PR_Recv(%d) 0 (EOF)
PR_Write(%d) error %d (%s)
send(%d) 0
SSL_HandshakeCallback() %d error %d (%s)
SSL_BadCertHook(%i) %i
Reseting signal mask....
%s
Failed to reset signal mask
....Done (signal mask reset)!!
ERROR: Not enough descriptors to accept any connections. This may be because the maxdescriptors configuration directive is too small, the hard limit
on descriptors is too small (see limit(1)), or the reservedescriptors configuration directive is too large. Try increasing the number of descriptor
s available to the slapd process. The current value is %d. %d descriptors are currently reserved for internal slapd use, so the total number of desc
riptors available to the process must be greater than %d.
slapd started. Listening on %s port %d for LDAP requests
all interfaces


could you tell me what the problem is and how to solve it? increase file descriptors?