update knowledgebase

common/docs/knowledgeBase/orientdb-3-maintenance.txt

+ORIENT 3 MIGRATION:
+
+
+1. to export database from console
+==================================
+- enter the orientdb docker and enter to console:
+orientdb>docker exec -it docker_orientdb_1 bash
+orientdb>/orientdb/bin/console.sh
+
+// connect to MCX & export
+orientdb>CONNECT remote:localhost/MCX root giptmgrr
+orientdb> EXPORT DATABASE
+
+2. to import database from console
+==================================
+- enter the orientdb docker and enter to console:
+orientdb>docker exec -it docker_orientdb_1 bash
+orientdb>/orientdb/bin/console.sh
+
+// connect to MCX & export
+orientdb>CONNECT remote:localhost/MCX root giptmgrr
+orientdb>IMPORT DATABASE /opt/mcx/config/docker/MCX-18-08-2019.gz -preserveClusterIDs=true
+
+
+
+