Thank you for reply, I believe this is a memory issue related see the last line, we were
been waiting patiently for last hours to recover db but no progress so far .
One of the link you pointed is no working , unfortunately this is not RHEL7.7 is
Scientific Linux can not open the a case.
Loaded: loaded (/usr/lib/systemd/system/dirsrv@.service; disabled; vendor preset:
disabled)
Active: failed (Result: signal) since Tue 2019-10-15 10:51:19 PDT; 40min ago
Process: 12904 ExecStart=/usr/sbin/ns-slapd -D /etc/dirsrv/slapd-%i -i
/var/run/dirsrv/slapd-%i.pid (code=killed, signal=BUS)
Process: 12898 ExecStartPre=/usr/sbin/ds_systemd_ask_password_acl
/etc/dirsrv/slapd-%i/dse.ldif (code=exited, status=0/SUCCESS)
Main PID: 12904 (code=killed, signal=BUS)