Hello Dirk,

You were right about the command used to increase Java's heap size, but my loading files don't work yet.

The server has memory 988g
When I put 500g in the option  -Xmx it raised the error below:

Error occurred during initialization of VM
Unable to allocate bit map for parallel garbage collection for the requested heap size.
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

So I decreased it from 500 to 350 then the following error appears

Out of Main Memory.
You can try to:
- increase Java's heap size with the flag -Xmx<size>
- deactivate the text and attribute indexes.

I  already deactivated the indexes

FTINDEX: OFF
TEXTINDEX: OFF
ATTRINDEX: OFF

What should I do to import data into the basex?

Regards,

Daiane.