6.5. Logs
Slapd uses the syslog(8) facility to generate logs. The default user of the 
syslog(8) facility is LOCAL4, but values from LOCAL0, LOCAL1, up to LOCAL7 are 
allowed. 
In order to enable the generation of logs you have to edit your syslog.conf 
file, usually located in the /etc directory. 
Create a line like this: 
local4.*     /usr/adm/ldaplog   | 
This will use the default user LOCAL4 for the syslog facility. If you are not 
familiar with the syntax of this line, take a look at the man pages of syslog, 
syslog.conf and syslogd. If you want to specify the level of the logs generated or to 
change the default user, you have the following options while starting slapd: 
This option tells slapd at what level debugging statements should be logged
to the syslog(8) facility. The level describes the severity of the message, and
is a keyword from the following ordered list (higher to lower): emerg, alert, 
crit, err, warning, notice, info, and debug.  Ex: slapd -f myslapd.conf -s debug 
Selects  the local user of the syslog(8) facility. Values can be LOCAL0, 
LOCAL1, and so on, up to LOCAL7. The default is LOCAL4. However, this option is
only permitted on systems that support local users with the syslog(8) facility. 
Now take a look at the logs generated (/usr/adm/ldaplog in the example). They can help 
you tremendously in solving problems with queries, updates, binding, etc.