# Error while migrating db from OrientDB to H2

**URL:** <https://community.sonatype.com/t/error-while-migrating-db-from-orientdb-to-h2/14111>\
**Category:** Sonatype Nexus Repository\
**Tags:** upgrade, migrate\
**Created:** [January 3, 2025, 3:00pm UTC](https://community.sonatype.com/t/error-while-migrating-db-from-orientdb-to-h2/14111 "2025-01-03T15:00:22Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![Will](https://avatars.discourse-cdn.com/v4/letter/w/90ced4/32.png) [@Will](https://community.sonatype.com/u/Will)\
**Post date:** [January 3, 2025, 3:00pm UTC](https://community.sonatype.com/t/error-while-migrating-db-from-orientdb-to-h2/14111/1 "2025-01-03T15:00:22Z")

</div>

Hi,

We are using a stand-lone version of Nexus 3.70.3-01.

When i’m using the db migrator tool to migrate the OrientDB to H2 i’m getting an error.

```auto
java.lang.IllegalStateException: Failed to execute ApplicationRunner
        at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:776)
        at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:763)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:314)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1317)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
        at com.sonatype.nexus.db.migrator.MigratorApplication.main(MigratorApplication.java:117)
Caused by: com.sonatype.nexus.db.migrator.exception.InvalidMigrationFilesException: The migration files in sonatype-work/nexus3/db-temp do not match the expected requirements: Not all required database names are present.

```

These are the present files:

```auto
drwxr-xr-x 2 nexus nexus 4096 Jan 2 14:28 analytics
-rw-r--r-- 1 nexus nexus 38440711 Jan 2 14:28 analytics-2024-12-12-17-48-49-3.70.3-01.bak
drwxr-xr-x 2 nexus nexus 12288 Jan 2 14:34 component
-rw-r--r-- 1 nexus nexus 324760 Jan 2 14:28 component-2024-12-12-17-48-49-3.70.3-01.bak
drwxr-xr-x 2 nexus nexus 12288 Jan 2 14:48 config
-rw-r--r-- 1 nexus nexus 2 Jan 2 14:49 frozen.marker
drwxr-xr-x 2 nexus nexus 4096 Jan 3 13:38 logs
-rw-r--r-- 1 nexus nexus 94 Jan 2 14:50 model.properties
-rwxr-xr-x 1 nexus nexus 56808416 Jan 2 14:29 nexus-db-migrator-3.70.3-01.jar
-rw-r--r-- 1 nexus nexus 16384 Jan 3 13:38 nexus.mv.db
drwxr-xr-x 2 nexus nexus 4096 Jan 2 14:47 OSystem
drwxr-xr-x 2 nexus nexus 4096 Jan 2 14:47 security
-rw-r--r-- 1 nexus nexus 198609 Jan 2 14:47 security-2024-12-12-17-48-49-3.70.3-01.bak

```

According to the error a file is missing. Can you tell me which file(s) is/are missing?

Regards, Will

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