found this post which lead me to successfully connect to db=config
nexus-3.70.1-02]# java -jar ./nexus-3.70.1-02/lib/support/nexus-orient-console.jar
Warning: Nashorn engine is planned to be removed from a future JDK release
OrientDB console v.2.2.37 (build a7541e7ceeabf592dd9a7b2928b6c023cbc73193, branch 2.2.x) https://www.orientdb.com
Type ‘help’ to display all the supported commands.
orientdb> connect plocal:…/sonatype-work/nexus3/db/config admin admin
Connecting to database [plocal:…/sonatype-work/nexus3/db/config] with user ‘admin’…WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.orientechnologies.common.directmemory.OByteBufferPool (file:/dr01/maven/nexus-3.70.1-02/nexus-3.70.1-02/system/com/orientechnologies/orientdb-core/2.2.37/orientdb-core-2.2.37.jar) to method sun.nio.ch.DirectBuffer.cleaner()
WARNING: Please consider reporting this to the maintainers of com.orientechnologies.common.directmemory.OByteBufferPool
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
OK