On Sat, 2020-08-08 at 03:59 -0600, Hotmail wrote: > We migrated data from Oracle to postgres using oracle_fdw without seeing any invalid byte > sequence for encoding "UTF8": 0x00 errors. The data transfer from Oracle to Postgres using > oracle_fdw completed successfully without any errors. > > After we started our application using Postgres as the new data source we are consistently > seeing "invalid byte sequence for encoding "UTF8": 0x00 errors" once or twice a minute on > a basic select statement like this: > > Select * from <table> where <col1>=‘foo’ and <col2>=‘foo2’; > > Not all queries fail just some. We can select * from the table in question from psql without > any invalid byte sequence errors (A problem with the jdbc client maybe?) oracle_fdw will complain about zero bytes, so odds are that your PostgreSQL database is fine. This is confirmed by the face that "SELECT * FROM atable" works in PostgreSQL. I can see two options: 1. The statement that causes the errors is actually a different statement, for example an INSERT. 2. 'foo' and 'foo2' contain zero bytes. Yours, Laurenz Albe
