Chattopadhyay asked:
> My application based on Java servlets was running fine with
> version PostgreSQL 7.x, but started giving error:
> "transaction is read-only", in version 8.0 and 8.1. I am
> using Suse Linux 9.3/PostgreSQL 8.0 or Suse Linux
> 10.1/PostgreSQL 8.1. I am using JDBC 3 drivers and all
> connections are in auto-commit mode. Could you please tell me
> what's going wrong.
[...]
> I'd really appreciate if anyone could suggest a pointer for
> further investigation, if not an outright solution.

Via JDBC, ask the database to

SHOW default_transaction_read_only

and look at the output.
If that is 'true', look at

SELECT source FROM pg_settings WHERE
name='default_transaction_read_only'

If it is false, check java.sql.Connection.isReadOnly().
It is 'false' by default, but maybe is changed somewhere in your code.

Yours,
Laurenz Albe

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