Database 'test.db' is unavailable. Run :sysinfo for more info

I am in the community version and have a main database using the default 'neo4j' name, and I created a test db with the name 'test.db' under the director data/databases/test.db/. The way I switch between these 2 databaes is by changing this line in the conf/neo4j.conf:

# The name of the default database
#dbms.default_database=neo4j
dbms.default_database=test.db

I can always safely switch to 'neo4j', but when I tried to switch back to 'test.db', in the browser, it fails, giving this message:

Database 'test.db' is unavailable. Run :sysinfo for more info.

The output of :sysinfo is:

Store Sizes

ID Allocation

Page Cache

Transactions

which is not helpful. In the 'use database' menu, it indeed displays 'test.db' as the default db.

However, if I delete the data/databases/test.db/ and recreate it, it works fine.

This by itself might not be enough information to spot what's going on. Check the output in your debug.log file (same directory as neo4j.log) and see what it has to say about starting that database when you switch.

After I switched to the test.db database and neo4j restart, the debug log gives this:

2020-11-04 21:19:54.047+0000 WARN [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.logging.impl.Log4JLogger` from plugin jar `/Users/congminmin/applications/neo4j-community-4.0.4/plugins/apoc-4.0.0.13-all.jar`: org/apa     che/log4j/Priority
1064 2020-11-04 21:19:54.048+0000 WARN [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.logging.impl.LogKitLogger` from plugin jar `/Users/congminmin/applications/neo4j-community-4.0.4/plugins/apoc-4.0.0.13-all.jar`: org/ap     ache/log/Logger
1065 2020-11-04 21:19:54.564+0000 INFO [o.n.d.d.DefaultDatabaseManager] Creating 'test.db' database.
1066 2020-11-04 21:19:54.565+0000 INFO [o.n.d.d.DefaultDatabaseManager] Starting 'test.db' database.
1067 2020-11-04 21:19:54.576+0000 INFO [o.n.k.i.s.f.RecordFormatSelector] [test.db] Selected RecordFormat:StandardV4_0[SF4.0.0] record format from store /Users/congminmin/applications/neo4j-community-4.0.4/data/databases/test.db
1068 2020-11-04 21:19:54.577+0000 INFO [o.n.k.i.s.f.RecordFormatSelector] [test.db] Selected format 'RecordFormat:StandardV4_0[SF4.0.0]' for existing store /Users/congminmin/applications/neo4j-community-4.0.4/data/databases/test.db with f     ormat 'RecordFormat:StandardV4_0[SF4.0.0]'
1069 2020-11-04 21:19:55.014+0000 WARN [o.n.k.d.Database] [test.db] Exception occurred while starting the database. Trying to stop already started components. Mismatching store id. Store StoreId: StoreId{creationTime=1604523722822, random     Id=8282328604263151428, storeVersion=3471765337752883975, upgradeTime=1604523722822, upgradeTxId=1}. Transaction log StoreId: StoreId{creationTime=1603510735432, randomId=-8572583176468044877, storeVersion=3471765337752883975, upgrad     eTime=1603510735432, upgradeTxId=1}
1070 java.lang.RuntimeException: Mismatching store id. Store StoreId: StoreId{creationTime=1604523722822, randomId=8282328604263151428, storeVersion=3471765337752883975, upgradeTime=1604523722822, upgradeTxId=1}. Transaction log StoreId:      StoreId{creationTime=1603510735432, randomId=-8572583176468044877, storeVersion=3471765337752883975, upgradeTime=1603510735432, upgradeTxId=1}
1071         at org.neo4j.kernel.recovery.Recovery.validateStoreId(Recovery.java:386)
1072         at org.neo4j.kernel.database.Database.start(Database.java:377)
1073         at org.neo4j.dbms.database.AbstractDatabaseManager.startDatabase(AbstractDatabaseManager.java:187)
1074         at org.neo4j.dbms.database.DefaultDatabaseManager.startDatabase(DefaultDatabaseManager.java:132)
1075         at org.neo4j.dbms.database.DefaultDatabaseManager.initialiseDefaultDatabase(DefaultDatabaseManager.java:64)
1076         at org.neo4j.dbms.database.DefaultDatabaseInitializer.start0(DefaultDatabaseInitializer.java:39)
1077         at org.neo4j.kernel.lifecycle.SafeLifecycle.transition(SafeLifecycle.java:124)
1078         at org.neo4j.kernel.lifecycle.SafeLifecycle.start(SafeLifecycle.java:138)
1079         at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:444)
1080         at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:111)
1081         at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:158)
1082         at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.build(DatabaseManagementServiceFactory.java:145)
1083         at org.neo4j.server.database.CommunityGraphFactory.newDatabaseManagementService(CommunityGraphFactory.java:36)
1084         at org.neo4j.server.database.LifecycleManagingDatabaseService.start(LifecycleManagingDatabaseService.java:88)
1085         at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:444)
1086         at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:111)
1087         at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:157)
1088         at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:114)
1089         at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:89)
1090         at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:35)
1091 2020-11-04 21:19:55.015+0000 ERROR [o.n.d.d.DefaultDatabaseManager] Failed to start database: test.db An error occurred! Unable to start database with name `test.db`.
1092 org.neo4j.dbms.api.DatabaseManagementException: An error occurred! Unable to start database with name `test.db`.
1093         at org.neo4j.dbms.database.AbstractDatabaseManager.startDatabase(AbstractDatabaseManager.java:191)
1094         at org.neo4j.dbms.database.DefaultDatabaseManager.startDatabase(DefaultDatabaseManager.java:132)
1095         at org.neo4j.dbms.database.DefaultDatabaseManager.initialiseDefaultDatabase(DefaultDatabaseManager.java:64)
1096         at org.neo4j.dbms.database.DefaultDatabaseInitializer.start0(DefaultDatabaseInitializer.java:39)
1097         at org.neo4j.kernel.lifecycle.SafeLifecycle.transition(SafeLifecycle.java:124)
1098         at org.neo4j.kernel.lifecycle.SafeLifecycle.start(SafeLifecycle.java:138)
1099         at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:444)
1100         at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:111)
1101         at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:158)
1102         at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.build(DatabaseManagementServiceFactory.java:145)
1103         at org.neo4j.server.database.CommunityGraphFactory.newDatabaseManagementService(CommunityGraphFactory.java:36)
1104         at org.neo4j.server.database.LifecycleManagingDatabaseService.start(LifecycleManagingDatabaseService.java:88)
1105         at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:444)
1106         at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:111)
1107         at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:157)
1108         at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:114)
1109         at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:89)
1110         at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:35)
1111 Caused by: java.lang.RuntimeException: java.lang.RuntimeException: Mismatching store id. Store StoreId: StoreId{creationTime=1604523722822, randomId=8282328604263151428, storeVersion=3471765337752883975, upgradeTime=1604523722822, up     gradeTxId=1}. Transaction log StoreId: StoreId{creationTime=1603510735432, randomId=-8572583176468044877, storeVersion=3471765337752883975, upgradeTime=1603510735432, upgradeTxId=1}
1112         at org.neo4j.kernel.database.Database.start(Database.java:478)
1113         at org.neo4j.dbms.database.AbstractDatabaseManager.startDatabase(AbstractDatabaseManager.java:187)
1114         ... 17 more
1115 Caused by: java.lang.RuntimeException: Mismatching store id. Store StoreId: StoreId{creationTime=1604523722822, randomId=8282328604263151428, storeVersion=3471765337752883975, upgradeTime=1604523722822, upgradeTxId=1}. Transaction lo     g StoreId: StoreId{creationTime=1603510735432, randomId=-8572583176468044877, storeVersion=3471765337752883975, upgradeTime=1603510735432, upgradeTxId=1}
1116         at org.neo4j.kernel.recovery.Recovery.validateStoreId(Recovery.java:386)
1117         at org.neo4j.kernel.database.Database.start(Database.java:377)
1118         ... 18 more
1119 2020-11-04 21:20:00.084+0000 INFO [o.n.b.BoltServer] Bolt enabled on 0.0.0.0:7687.
1120 2020-11-04 21:20:00.098+0000 INFO [o.n.s.AbstractNeoServer$ServerComponentsLifecycleAdapter] [system] Starting web server
1121 2020-11-04 21:20:00.718+0000 INFO [o.n.s.AbstractNeoServer$ServerComponentsLifecycleAdapter] [system] Web server started.
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While neo4j.log shows it's fine:

1 2020-11-04 21:19:41.638+0000 WARN  The 'dbms.security.procedures.unrestricted' setting is overridden. Setting value changed from 'gbs.*' to 'gds.*,apoc.*'.
  2 2020-11-04 21:19:41.641+0000 INFO  Note that since you did not explicitly set the port in dbms.connector.bolt.advertised_address Neo4j automatically set it to 7687 to match dbms.connector.bolt.listen_address. This beh    avior may change in the future and we recommend you to explicitly set it.
  3 2020-11-04 21:19:41.644+0000 INFO  ======== Neo4j 4.0.4 ========
  4 2020-11-04 21:19:41.646+0000 INFO  Starting...
  5 2020-11-04 21:20:00.084+0000 INFO  Bolt enabled on 0.0.0.0:7687.
  6 2020-11-04 21:20:00.084+0000 INFO  Started.
  7 2020-11-04 21:20:00.717+0000 INFO  Remote interface available at http://localhost:7474/

Neo4j Team: Have you seen similar errors reported before? The error message is above. This happens when I switch between two databases by changing the configuration entry:

#dbms.default_database=neo4j
dbms.default_database=test.db

I haven't found the exact reason for this. After switching, the database is up, and I created a new graph in it. Everything is fine. However, if I stop it and want to restart it, this error occurs. I use:
bin/neo4j start|restart|stop

to control the db.

My db version is 4.0.4 and on MacPro.