upgrade stuck on rebuilding

[victor]

You can try the following:

1. https://forum.espocrm.com/forum/inst...345#post105345.
2. To transfer data using the Export-Import extension: https://docs.espocrm.com/extensions/...port-extension from the old 8.4.2 to the new 8.4.2 and do the Upgrade.
3. Also try using the Export-Import extension to transfer data from the old 8.4.2 directly to the new 9.0.6 (this option is worse than the previous one).

[Emmker]

Update1.

If I remove all the rows on email table, I can easily upgrade without problems.

I tried to export the emails with the extension, with:
php -d memory_limit=8192M bin/command export-import export --format=json --path="./data/export-import" --entity-list="Email" --y

and I got:
PHP Fatal error: Allowed memory size of 8589934592 bytes exhausted (tried to allocate 16019400 bytes) in /var/www/espocrm/application/Espo/ORM/Executor/DefaultSqlExecutor.php on line 77

Update 2.
I am now trying with 14gb