RHDS - Export is failing because of a database corruption.

Issue

An export of a database fails with the following message:

# db2ldif -Z <INSTANCE_NAME> -n <DATABASE_NAME> -a /var/tmp/export.ldif
Exported ldif file: /var/tmp/export.ldif
ldiffile: /var/tmp/export.ldif
...
[25/Oct/2018:19:09:42.996156979 +0300] - ERR - libdb - BDB0060 PANIC: fatal region error detected; run recovery
[25/Oct/2018:19:09:42.998164803 +0300] - CRIT - dblayer_start - Opening database environment (/var/lib/dirsrv/slapd-<INSTANCE_NAME>/db) failed. err=-30973: BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery
[25/Oct/2018:19:09:43.001848165 +0300] - ERR - ldbm_back_ldbm2ldif - db2ldif: Failed to init database
[25/Oct/2018:19:09:43.013269971 +0300] - INFO - dblayer_pre_close - All database threads now stopped
#

Starting with RHDS 11 ( RHEL 8 ), the command for an offline export is:

# dsctl <INSTANCE> db2ldif <BACKEND> /var/lib/dirsrv/slapd-<INSTANCE>/ldif/<FILE>.ldif