# Migrate data from 3.5.1 Community to 4.0.0 Community **URL:** \ **Category:** Neo4j 4.0\ **Created:** [February 7, 2020, 9:55pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502 "2020-02-07T21:55:01Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![keithave](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/keithave/32/9037_2.png) [@keithave](https://community.neo4j.com/u/keithave)\ **Post date:** [February 7, 2020, 9:55pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/1 "2020-02-07T21:55:01Z")
Howdy, Not sure if this is the right place to post or if this has been answered elsewhere, please point me in the right direction. I've been using Neo4j 3.5.1 Community and would like to migrate my data into Neo4j Community 4.0.0. If there is **clear documentation** for migrating from 3.5 to 4.0 Community, please point me in that direction. **Hurdles I've cleared thus far...** 1. updated java jdk from 1.8 to jdk 11 (and edited env var) 2. downloaded community-4.0.0 3. edited neo4j.conf to... ```auto # Enable this to be able to upgrade a store from an older version. dbms.allow_upgrade=true ``` 1. copied 3.5.1 graph.db file into C:\Users\owner\Documents\neo4j-community-400\data\databases 2. ran "neo4j console" from command prompt and received the following in cmd line... **`C:\Users\owner\Documents\neo4j-community-400\bin>neo4j console`** `2020-02-07 21:31:04.218+0000 INFO ======== Neo4j 4.0.0 ======== 2020-02-07 21:31:04.225+0000 INFO Starting... SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. 2020-02-07 21:31:14.032+0000 INFO Bolt enabled on localhost:7687. 2020-02-07 21:31:14.034+0000 INFO Started. 2020-02-07 21:31:14.963+0000 INFO Remote interface available at http://localhost:7474/ ` **Roadblocks I'm encountering...** So 4.0 'appears' to be running (despite whatever that is about SLF4J), but when I go to [http://localhost:7474/browser/](http://localhost:7474/browser/), get past all the new login info I do see that the browser recognizes **graph.db - default** as the db to use, BUT none of my Node Labels, Relationship Types, or Property Keys show in browser AND if I run a simple query (and even if I run the query without the :Beer label) against this graph.db I get the following... **`Database 'graph.db' is unavailable.`** ![Neo4j 4 not working](https://us1.discourse-cdn.com/flex021/uploads/neo4jcommunity/original/2X/8/8469ffb7803de08cde1ee44a6626737712ee4324.png) What am I missing? What else do I need to do to migrate my old data into Community-4.0.0? ---
**Author:** ![david\_allen](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/david_allen/32/13090_2.png) [@david\_allen](https://community.neo4j.com/u/david_allen)\ **Post date:** [February 7, 2020, 10:26pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/2 "2020-02-07T22:26:05Z")
Here is the documentation: > **[Migrate a single instance - Upgrade and Migration Guide](https://neo4j.com/docs/upgrade-migration-guide/current/version-4/migration/migrate-to-4.0/standalone/)** > > This chapter describes the necessary steps to migrate a single instance from Neo4j version 3.5 to 4.0. From a brief scan of what you've done, a thing you may be missing is setting `dbms.default_database` as described in step 1.a.ii "Prepare to upgrade" ---
**Author:** ![keithave](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/keithave/32/9037_2.png) [@keithave](https://community.neo4j.com/u/keithave)\ **Post date:** [February 7, 2020, 10:43pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/3 "2020-02-07T22:43:21Z")
Thanks for your quick response David. Ok, so I've edited the neo4j.conf file a couple times now with the following... ```auto # The name of the default database dbms.default_database=graph.db ``` editing, saving, restarting neo4j did not work. Then I tried giving a direct path to the file... ```auto # Paths of directories in the installation. dbms.directories.data=C:\Users\owner\Documents\neo4j-community-400\data\databases\graph.db ``` Neither of these seem to work, either together or independent of each other. For what it's worth, my log file shares this re: migration... ```auto 2020-02-07 21:30:36.183+0000 INFO [o.n.k.i.s.DatabaseMigrator] [graph.db] Starting upgrade of database 2020-02-07 21:30:36.245+0000 INFO [o.n.k.i.s.DatabaseMigrator] [graph.db] Migrating Store files (1/6): 2020-02-07 21:30:36.572+0000 WARN [o.n.k.d.Database] [graph.db] Exception occurred while starting the database. Trying to stop already started components. Failure doing migration org.neo4j.kernel.impl.storemigration.StoreUpgrader$UnableToUpgradeException: Failure doing migration ``` So it's not gotten past 1 of 6. ---
**Author:** ![david\_allen](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/david_allen/32/13090_2.png) [@david\_allen](https://community.neo4j.com/u/david_allen)\ **Post date:** [February 7, 2020, 10:46pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/4 "2020-02-07T22:46:09Z")
graph.db is not a valid database name in neo4j 4.0. That's a _folder_ name in 3.5. Version 3.5 didn't have the concept of named graphs, so basically that was just a directory name. > **[Administration and configuration - Operations Manual](https://neo4j.com/docs/operations-manual/current/manage-databases/configuration/)** > > This page describes how to manage multiple active databases. Try moving it to "graph" or the default which comes with Neo4j 4.0, which is "neo4j" Naming rules for databases are as follows: - Length must be between 3 and 63 characters. - The first character of a name must be an ASCII alphabetic character. - Subsequent characters must be ASCII alphabetic or numeric characters, dots or dashes; `[a..z][0..9].-` - Names are case-insensitive and normalized to lowercase. - Names that begin with an underscore and with the prefix `system` are reserved for internal use. ---
**Author:** ![keithave](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/keithave/32/9037_2.png) [@keithave](https://community.neo4j.com/u/keithave)\ **Post date:** [February 7, 2020, 11:11pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/5 "2020-02-07T23:11:59Z")
Thanks for your patience David, Here's what I've done but does not work. Btw, it's unclear which 'data' dir I'm to drop folders in 'data' or 'databases'. Here's what I have... I took the 3.5 **graph.db** and renamed it **neo4j**. I dropped this folder here... `C:\Users\owner\Documents\neo4j-community-400\data\databases\` I edited the neo4j.conf file to read... ```auto # Paths of directories in the installation. dbms.directories.data=C:/Users/owner/Documents/neo4j-community-400/data/databases/neo4j ``` (please note I've changed the direction of the slash / to appease the conf file) neo4j console starts, I get this... ```auto 2020-02-07 23:00:29.409+0000 INFO ======== Neo4j 4.0.0 ======== 2020-02-07 23:00:29.415+0000 INFO Starting... SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. 2020-02-07 23:00:38.745+0000 INFO Completed migration of 1 user into system graph. 2020-02-07 23:00:40.274+0000 INFO Called db.clearQueryCaches(): Query cache already empty. 2020-02-07 23:00:40.656+0000 INFO Bolt enabled on localhost:7687. 2020-02-07 23:00:40.657+0000 INFO Started. 2020-02-07 23:00:41.399+0000 INFO Remote interface available at http://localhost:7474/ ``` but when I open this in the browser, I see the neo4j - default, but nothing is in it, though I can now run a query without the aforementioned error. ---
**Author:** ![david\_allen](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/david_allen/32/13090_2.png) [@david\_allen](https://community.neo4j.com/u/david_allen)\ **Post date:** [February 8, 2020, 7:01pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/6 "2020-02-08T19:01:47Z")
I think you've got your data directory 2 levels deeper (data/databases) than it should be. You're pointing your data directory straight to your database folder, but that isn't right because the folder you're pointing to would end up containing many databases (since 4.0 can support many databases). To see the correct structure, a thing worth trying would be to start 4.0 completely empty without your migration dataset, from a new default root. In this case, you'll end up with an empty neo4j database created for you. By seeing where that's placed on disk, you can know to put your older graph folder under a different name at the same relative path. ---
**Author:** ![keithave](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/keithave/32/9037_2.png) [@keithave](https://community.neo4j.com/u/keithave)\ **Post date:** [February 11, 2020, 5:24am UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/7 "2020-02-11T05:24:32Z")
Thanks so much for your patience David, I'm sorry to put you through this, but there seem to be others with a somewhat similar issue. Granted 2. and 3. seem to be able to point to the old data, they just can't get the migrating to complete all the 1-6 steps. 1. [Unable to Upgrade to v4.0.0 from v3.0.1 (Community Edition)](https://community.neo4j.com/t/unable-to-upgrade-to-v4-0-0-from-v3-0-1-community-edition/14027) 2. [Migration to 4.0 stops](https://community.neo4j.com/t/migration-to-4-0-stops/14211) 3. [Migrating Store files (to 4.0)](https://community.neo4j.com/t/migrating-store-files-to-4-0/14209) ... Hmm, I see what you're saying about the '2 level deeper' but it seems that no matter where I start with my **data** dir, these other neo4j & systems dirs get build regardless. ... How bout this, I've gone back to the beginning, Chapter 4. Upgrade a single instance, and following the Upgrade directions directly, I get the following result… **Upgrade** 1. Install Neo4j 4.0.0 using one of the following methods, specific to your technology: a. If using a tarball or zipfile for installation: i. Untar or unzip Neo4j 4.0.0 ii. Transfer the new neo4j.conf that you prepared in the _Apply configuration changes_ step in Chapter 2, Prepare to upgrade. iii. Set dbms.allow\_upgrade=true in _neo4j.conf_ of the 4.0.0 installation. Neo4j will fail to start without this configuration. iv. Copy the files used for encryption from the old installation to the new one. v. Copy the **data** directory from the old installation to the new one. This step is not applicable if you have dbms.directories.data pointing to a directory outside of _NEO4J\_HOME_ . I have done all the above, and for 1.a.v., I am not pointing to a directory outside of _NEO4J\_HOME_ . I have copied my 3.5 **data** directory into the neo4j-community-400 folder, my home dir now has this structure… bin certificates conf **data** ........|\_databases .........................|\_graph (I have removed .db from the file name and dir contains many neostore.\* files and dirs like certificates, data, dbms, import, index, logs, plugins, schema) .........................|\_store\_lock ........|\_dbms ........|\_auth import lib logs plugins run Without altering anything in neo4j.conf, other than 1.a.iii., I run cmd line **neo4j console** and now my **data** dir has been given a **transactions** dir, and more importantly, my **data \> databases** dir (which only contained my **graph** dir) has been given a **neo4j** & **systems** dir. I would not expect this to happen since I replaced the 4.0 **data** dir with my 3.5 **data** dir. When I open localhost:7474/browser, I see the **neo4j** and **systems** dbs, but not my **graph** db… ![no-graph](https://us1.discourse-cdn.com/flex021/uploads/neo4jcommunity/original/2X/6/64438ba2838632bebdfa4fa7d257a0236036974c.png) If there’s something from the above directions I’m doing incorrectly, please let me know, otherwise I am at a loss and it would seem that the directions above need to be updated because they are lacking a piece(s) of this puzzle. ---
**Author:** ![keithave](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/keithave/32/9037_2.png) [@keithave](https://community.neo4j.com/u/keithave)\ **Post date:** [February 11, 2020, 5:25am UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/8 "2020-02-11T05:25:15Z")
Perhaps a How-to video on YouTube? ---
**Author:** ![david\_allen](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/david_allen/32/13090_2.png) [@david\_allen](https://community.neo4j.com/u/david_allen)\ **Post date:** [February 11, 2020, 12:07pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/9 "2020-02-11T12:07:48Z")
@keithave the instructions you've got make it look like you're doing everything right -- except I can't see your config and that's probably where it's not working. In particular -- if neo4j doesn't know to look for "graph" where you placed it, then what you'll get is exactly what you see -- it will create a default "neo4j" database instead. Post the snippet of your neo4j.conf file and I'll try to have a look. The YouTube video is a great idea, I'll look into it. ---
**Author:** ![david\_allen](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/david_allen/32/13090_2.png) [@david\_allen](https://community.neo4j.com/u/david_allen)\ **Post date:** [February 11, 2020, 3:55pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/10 "2020-02-11T15:55:43Z")
YouTube video on migrating 3.5 -\> 4.0! ---
**Author:** ![keithave](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/keithave/32/9037_2.png) [@keithave](https://community.neo4j.com/u/keithave)\ **Post date:** [February 11, 2020, 4:03pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/11 "2020-02-11T16:03:47Z")
Holy Smokes! David, you rock! Ok here's my neo4j.conf file... [neo4j.txt](https://community.neo4j.com/uploads/short-url/3o2q95ji4xDGjQcAdUjkqgNbOin.txt) (15.8 KB) As you can see, it's mostly unedited, only having un-commented the section **allow\_upgrade=true**. I'll take a look at your video and let you know how it goes. ---
**Author:** ![david\_allen](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/david_allen/32/13090_2.png) [@david\_allen](https://community.neo4j.com/u/david_allen)\ **Post date:** [February 11, 2020, 4:54pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/12 "2020-02-11T16:54:22Z")
Your issue is this line: ```auto #dbms.default_database=neo4j ``` Uncomment it, and change it to "graph" which is what you named your folder. Neo4j is starting up with the "default default" which is neo4j, which doesn't exist, so you get a blank database. ---
**Author:** ![keithave](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/keithave/32/9037_2.png) [@keithave](https://community.neo4j.com/u/keithave)\ **Post date:** [February 11, 2020, 11:41pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/13 "2020-02-11T23:41:56Z")
Thanks David, Sorry I attached a version of the neo4j.conf file that had only had the Upgrade line un-commented. I did uncomment this in subsequent endeavors. Ok, tears of joy here, but not without more trial and tribulation, such is life. Here's the story... I set up everything as you described in your video, but ran into this error (first 1/2 of pic below) when I tried to start with **neo4j console**... ![Starting Neo4j 4.0](https://us1.discourse-cdn.com/flex021/uploads/neo4jcommunity/original/2X/a/aa60d18ec05104843e90ef6eeae2288cb8a87c1d.png) **Solution** > This PowerShell? issue is likely unrelated to my Migration issue. ... ... After employing the fix from stackoverflow, I ran **neo4j console** again, but saw no Migration Steps 1-6. So I turned to the debug.log file (which proved quite helpful). In the log file I received this warning... ```auto 2020-02-11 21:58:05.558+0000 WARN [o.n.k.d.Database] [graph] Exception occurred while starting the database. Trying to stop already started components. The database is not cleanly shutdown. The database needs recovery, in order to recover the database, please run the old version of the database on this store. org.neo4j.kernel.impl.storemigration.StoreUpgrader$DatabaseNotCleanlyShutDownException: The database is not cleanly shutdown. The database needs recovery, in order to recover the database, please run the old version of the database on this store. ``` So I Googled neo4j clean shutdowns and came across this info... **Solution** > I did as the solution suggested and deleted 2 **neostore.transaction.db.** \* files. For the record, I had been using a database that runs on my local, hence the 'dirty' shutdown (since there doesn't seem to be a way to run **neo4j stop** when running **neo4j console** ) So I ran **neo4j stop** against a test database thinking these neostore.transaction files would be gone. They were not, so still left wondering what a cleanshut down is and how to avoid this pitfall in the future. ... ... I ran **neo4j console** again and received Migration 1-6 Joy! as seen here... ![Migrated 1-6](https://us1.discourse-cdn.com/flex021/uploads/neo4jcommunity/original/2X/f/fb694667eebb314e3b1284573f5311df7ad0ea24.png) However, my labels and relationships were still not showing in localhost:7474/browser. So I turned to the log file again and found another warning that suggested I add a line to my conf file... ```auto 2020-02-11 22:11:27.552+0000 WARN [o.n.k.d.Database] [graph] Exception occurred while starting the database. Trying to stop already started components. Component 'org.neo4j.kernel.recovery.Recovery$MissingTransactionLogsCheck@7f12094d' failed to initialize. Please see the attached cause exception "Transaction logs are missing and recovery is not possible. To force the database to start anyway, you can specify 'dbms.recovery.fail_on_missing_files=false'. This will create new transaction log and will update database metadata accordingly. Doing this means your database integrity might be compromised, please consider restoring from a consistent backup instead.". org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.recovery.Recovery$MissingTransactionLogsCheck@7f12094d' failed to initialize. Please see the attached cause exception "Transaction logs are missing and recovery is not possible. To force the database to start anyway, you can specify 'dbms.recovery.fail_on_missing_files=false'. This will create new transaction log and will update database metadata accordingly. Doing this means your database integrity might be compromised, please consider restoring from a consistent backup instead.". ``` I added **dbms.recovery.fail\_on\_missing\_files=false** to the conf file, ran **neo4j console** , and my database migration _APPEARS_ to be successful, meaning I can run cypher queries and see labels, relationships, and properties from my 3.5 data in the new neo4j 4.0. ... ... That said, I'm hoping maybe you can confirm that what appears to be a successful migration actually is? Thank you so much for sticking with me and for providing the very helpful video. I seemed to have found other 'anomalies' that couldn't possibly be accounted for. Many Thanks! Keith ---
**Author:** ![oleg\_neo4j](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/oleg_neo4j/32/33578_2.png) [@oleg\_neo4j](https://community.neo4j.com/u/oleg_neo4j)\ **Post date:** [May 30, 2020, 5:10am UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/14 "2020-05-30T05:10:35Z")
Hi David, I had an issue migrating from 3.5 to 4.0 and this thread helped me, but it was the video that did it. My old database folder had a name like: xxxx.graphdb and the period was causing problems. After I pointed to my old database(with the period in the folder name) in the .conf file, it went through the six step process of upgrading successfully, but then in the browser none of my nodes were visible, and I couldn't figure out why.... until I saw the video and took the period out 🙃 The period is still mentioned here as part of a valid db name: [Administration and configuration - Operations Manual](https://neo4j.com/docs/operations-manual/current/manage-databases/configuration/) and there's nothing about a valid name mentioned in the upgrade instructions of the Operations Manual([Upgrade a single instance to a 4.x patch release - Upgrade and Migration Guide](https://neo4j.com/docs/operations-manual/current/upgrade/deployment-upgrading/)). Could information about what makes a valid name be added/fixed in both locations? Thanks a lot for the video! :) ---
**Author:** ![faaizshah](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/faaizshah/32/5331_2.png) [@faaizshah](https://community.neo4j.com/u/faaizshah)\ **Post date:** [November 13, 2020, 11:36am UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/15 "2020-11-13T11:36:50Z")
Thanks for the video! ---
**Author:** ![kiran.ghanwat](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/kiran.ghanwat/32/5285_2.png) [@kiran.ghanwat](https://community.neo4j.com/u/kiran.ghanwat)\ **Post date:** [May 13, 2021, 10:01am UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/16 "2021-05-13T10:01:38Z")
Hi David, Thanks for Video. By referring this Video I followed steps to migrate from 3.5.22 to 4.0.2 version. But I am getting below error. Please help me in this. ![image](https://us1.discourse-cdn.com/flex021/uploads/neo4jcommunity/original/3X/e/6/e6f84aada39f3f12298253274227d84589c91e2e.png) ---
**Author:** ![david\_allen](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/david_allen/32/13090_2.png) [@david\_allen](https://community.neo4j.com/u/david_allen)\ **Post date:** [May 13, 2021, 11:17am UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/17 "2021-05-13T11:17:39Z")
Hi @kiran.ghanwat the error is clearly indicated in your screenshot. The trouble is that you must use Java 11 to run Neo4j 4, and your JDK here is too old and not supported for Neo4j 4 (you are using java version 1.7.0\_76) Upgrade your JVM and you should be in good shape. ---
**Author:** ![kiran.ghanwat](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/kiran.ghanwat/32/5285_2.png) [@kiran.ghanwat](https://community.neo4j.com/u/kiran.ghanwat)\ **Post date:** [May 17, 2021, 1:55pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/18 "2021-05-17T13:55:32Z")
Thanks David. I fixed issue related to JVM. I am using Neo4j desktop, within desktop, for practice purpose I created V3.5.22, added few nodes. Then I created another DB with V 4.0.2. As per your video I copied old files to new DB and renamed to neo4j. Updated conf file as well. while starting console I am getting below errors: -===== in security log ==== 2021-05-17 13:35:21.976+0000 INFO {plugin-com.neo4j.plugin.jwt.auth.JwtAuthPlugin} Log in attempted for user 'neo4j'. 2021-05-17 13:35:21.977+0000 ERROR {plugin-com.neo4j.plugin.jwt.auth.JwtAuthPlugin} Invalid serialized unsecured/JWS/JWE object: Missing part delimiters 2021-05-17 13:35:21.981+0000 INFO [neo4j]: logged in ===== debug.log ====== Database neo4j is requested to transition from EnterpriseDatabaseState{databaseId=DatabaseId{f682c3c4[neo4j] }, operatorState=INITIAL, failed=false} to EnterpriseDatabaseState{databaseId=DatabaseId{f682c3c4[neo4j] }, operatorState=STARTED, failed=false} 2021-05-17 13:24:08.201+0000 INFO [c.n.d.d.EnterpriseMultiDatabaseManager] Creating 'neo4j' database. 2021-05-17 13:24:08.203+0000 INFO [o.n.k.i.f.StatementLocksFactorySelector] No services implementing StatementLocksFactory found. Using SimpleStatementLocksFactory 2021-05-17 13:24:08.207+0000 INFO [c.n.d.d.EnterpriseMultiDatabaseManager] Starting 'neo4j' database. 2021-05-17 13:24:08.231+0000 INFO [o.n.k.i.s.f.RecordFormatSelector] [neo4j] Selected RecordFormat:StandardV3\_4[v0.A.9] record format from store C:\Users\w49575.Neo4jDesktop\relate-data\dbmss\dbms-74e1167c-8f64-4e8c-a92d-fe84891194d8\data\databases\neo4j 2021-05-17 13:24:08.233+0000 INFO [o.n.k.i.s.f.RecordFormatSelector] [neo4j] Selected format 'RecordFormat:StandardV4\_0[SF4.0.0]' for existing store C:\Users\w49575.Neo4jDesktop\relate-data\dbmss\dbms-74e1167c-8f64-4e8c-a92d-fe84891194d8\data\databases\neo4j with format 'RecordFormat:StandardV3\_4[v0.A.9]' 2021-05-17 13:24:08.291+0000 INFO [o.n.k.i.s.DatabaseMigrator] [neo4j] Starting upgrade of database 2021-05-17 13:24:08.319+0000 WARN [o.n.k.d.Database] [neo4j] Exception occurred while starting the database. Trying to stop already started components. The database is not cleanly shutdown. The database needs recovery, in order to recover the database, please run the old version of the database on this store. org.neo4j.kernel.impl.storemigration.StoreUpgrader$DatabaseNotCleanlyShutDownException: The database is not cleanly shutdown. The database needs recovery, in order to recover the database, please run the old version of the database on this store. at org.neo4j.kernel.impl.storemigration.StoreUpgrader.assertCleanlyShutDownByCheckPoint(StoreUpgrader.java:287) at org.neo4j.kernel.impl.storemigration.StoreUpgrader.migrate(StoreUpgrader.java:195) at org.neo4j.kernel.impl.storemigration.StoreUpgrader.migrateIfNeeded(StoreUpgrader.java:146) ==== in browser ===== ![image](https://us1.discourse-cdn.com/flex021/uploads/neo4jcommunity/original/3X/e/6/e6bb6fa429465f0d44dda31206d0bf9664c60265.png) Please help me in this upgrade issue. ---
**Author:** ![kiran.ghanwat](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/kiran.ghanwat/32/5285_2.png) [@kiran.ghanwat](https://community.neo4j.com/u/kiran.ghanwat)\ **Post date:** [May 19, 2021, 4:12am UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/19 "2021-05-19T04:12:34Z")
One more query @david_allen , this Video and procedure mentioned is applicable for community only or enterprise edition ? ---
**Author:** ![gagan.suri](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/gagan.suri/32/14954_2.png) [@gagan.suri](https://community.neo4j.com/u/gagan.suri)\ **Post date:** [July 9, 2021, 8:13pm UTC](https://community.neo4j.com/t/migrate-data-from-3-5-1-community-to-4-0-0-community/14502/20 "2021-07-09T20:13:39Z")
@david_allen I have a custom procedure written in Java which uses org.neo4j.kernel.internal.GraphDatabaseAPI especially findNodes method from 3.5. But looks like in 4.0 this GraphDatabaseAPI doesn't have findNodes method. Which class and which method should I be using for custom procedures in Neo4j 4.x. Thank you,Gagan