Subsetting SQL script generation fails with '"Connection reset" in statement "Insert into JAILER_ENTITY...' after having been running for 10s of hours about jailer

[Wisser]

Hi,

The statement that failed here was executed on the remote database (MS SQL). Probably the DBMS timed out there because the request took too long.

You can try to avoid such errors by selecting "local database" as "working table scope" (in "Data Export" dialog). However, the total runtime will increase. But long running "Insert Into..." statements will be prevented.

Basically, Jailer is a database client that makes requests to a DBMS. If the DBMS aborts a query with an error, the tool's work cannot continue either.
Also, the usual rules apply to the runtimes of the queries. Indexes may be necessary to bring the performance to a reasonable level (and thus avoid timeouts). With Jailer these are usually missing indexes on foreign key columns, because depending on the extraction model associations are also resolved in the direction of parent -> child.

Is it intended to extract tens of millions of rows? As you can see, the rows to be exported (resp. their PKs) are first collected in a table with "Insert Into" statements. Of course, the DBMS must be enabled for this, so that it does not abort the statements because some resources are not sufficient.