batch-processing

I'm currently facing the well-known and common Hibernate insert batch problem. I need to save batches 5 millions of rows long. I'm first trying with a much lighter payload. Since I have to insert entities of only 2 types (first all records of type A, then all records of type B, all pointing to common type C ManyToOne parent), I would like to take the most advantage from JDBC batch insert. I have already read lots of documentation, but none that I have tried worked. I know that in order to use batch inserts I must not use an entity generator. So I removed the AUTO_INCREMENT ID and I'm setting

From documentation If we have a case where we need to insert 1000 000 rows/objects: Session session = sessionFactory.openSession(); Transaction tx = session.beginTransaction(); for ( int i=0; i<100000; i++ ) { Customer customer = new Customer(.....); session.save(customer); if ( i % 20 == 0 ) { //20, same as the JDBC batch size //flush a batch of inserts and release memory: session.flush(); session.clear(); } } tx.commit(); session.close(); Why we should use that approach? What kind of benefit it brings us comparing to StatelessSession one: StatelessSession session = sessionFactory

I want to have a batch file that will delete all the folders and files in my Cache folder for my wireless toolkit. Currently I have the following: cd "C:\Users\tbrollo\j2mewtk\2.5.2\appdb\RMS" del *.db This will delete all .db files in my RMS directory, however I want to delete every single thing from this directory Can you help me out? Thanks. Jon Martin del *.* instead of del *.db . That will remove everything. Create a batch file copy below text into batch file set folder="C:\test" cd /d %folder% for /F "delims=" %%i in ('dir /b') do (rmdir "%%i" /s/q || del "%%i" /s/q) Will delete all