OtterMind/Chat2DB · error · BusinessException

database.delete.prepareFailed

database.delete.prepareFailed

Error message

database.delete.prepareFailed

What it means

Wraps any non-BusinessException raised during prepareDatabaseDelete() while asserting the target database exists (assertDatabaseExists). The prepare step validates the database is present before producing the drop SQL; an unexpected failure here is reported as 'Failed to prepare deletion: {0}'.

Source

Thrown at chat2db-community-server/chat2db-community-domain/chat2db-community-domain-core/src/main/java/ai/chat2db/community/domain/core/impl/db/DbDatabaseObjectDeleteServiceImpl.java:74

    public DbDatabaseObjectDeleteServiceImpl(IDbConnectionContextService connectionContextService) {
        this.connectionContextService = connectionContextService;
    }

    @Override
    public DatabaseObjectDeletePrepare prepareDatabaseDelete(DbDatabaseDeletePrepareRequest param) {
        ConnectionProfile profile = requireCurrentProfile();
        String dbType = requireSupportedDbType(profile);
        reconnectForDatabaseDelete(dbType);
        String databaseName = requireName(param.getDatabaseName(), "databaseName");
        assertDatabaseDeletionSupported(dbType);
        rejectSystemDatabase(dbType, databaseName);
        Connection connection = requireConnection();
        try {
            assertDatabaseExists(connection, dbType, databaseName);
        } catch (BusinessException e) {
            throw e;
        } catch (Exception e) {
            throw new BusinessException("database.delete.prepareFailed", new Object[]{e.getMessage()}, e);
        }
        return prepareResult(databaseConfirmName(databaseName), buildDropDatabase(dbType, databaseName),
                TYPE_DATABASE, dbType);
    }

    @Override
    public DatabaseObjectDeletePrepare prepareSchemaDelete(DbSchemaDeletePrepareRequest param) {
        ConnectionProfile profile = requireCurrentProfile();
        String dbType = requireSupportedDbType(profile);
        String databaseName = requireName(param.getDatabaseName(), "databaseName");
        String schemaName = requireName(param.getSchemaName(), "schemaName");
        assertSchemaDeletionSupported(dbType);
        rejectSystemSchema(dbType, schemaName);
        Connection connection = requireConnection();
        try {
            assertSchemaExists(connection, databaseName, schemaName);
        } catch (BusinessException e) {
            throw e;

View on GitHub (pinned to 5ee1e990e7)

Solutions

1. Read the wrapped cause ({0} = e.getMessage()) to find the underlying JDBC error.
2. Ensure the maintenance connection is alive (reconnectForDatabaseDelete succeeded) and the user has metadata privileges.
3. Re-run the prepare step after reconnecting.

try {
    deleteService.prepareDatabaseDelete(param);
} catch (BusinessException e) {
    if ("database.delete.prepareFailed".equals(e.getCode())) {
        // inspect e.getCause() (SQLException) and e.getArgs()[0] for the reason
    } else {
        throw e;
    }
}

When it happens

Trigger: prepareDatabaseDelete() reaches assertDatabaseExists(connection, dbType, databaseName) and the metadata lookup throws a SQLException or other non-Business error (e.g. connection lost, driver metadata failure).

Common situations: Connection dropped between reconnectForDatabaseDelete and the existence check, the dialect's metadata query is unsupported, or permissions prevent listing databases.

Related errors

• database.delete.executeFailed
• database.delete.connectionTargetsDeletedDatabase
• database.delete.connectionDatabaseMismatch
• database.delete.invalidDataSource
• database.delete.notSupportDbType

AI-assisted analysis of OtterMind/Chat2DB@5ee1e990e7 (2026-08-14). Data as JSON: /api/errors/bcccd092d16133ed. Report an issue: GitHub.