[Sqlrelay-discussion] Ruby + Sybase (+ PostgreSQL) very unstable

[Manuel S. <man...@sy...>]

Hi folks,

I'm using Fedora Core 10 as a database connection client and I want to
copy tables from a Sybase ASE 12.5 (freetds connection) database to a
PostgreSQL 8.3 db. For this, I programmed a pure Ruby script. The script
is working fine for several hundred rows, but then quits returning
different errors like segmentation faults, invalid pointers, corrupted
double-linked list (see errors_compilation.txt) etc. When starting the
script a second time, it just crashes at another point.

I tried different environments such as:
CentOS 5.2 and latest FreeTDS connection library
Fedora 9/10 with SQL Relay 0.39.4, SQL Relay 0.40, with Sybase Open
Client Library or with FreeTDS connection
I tried as well different Ruby Versions such as Ruby "Enterprise" and
older versions too.

However, the system crashes "randomly" at different points. The
computer's memory is 100% ok (memtest). 

I started to use gdb and other tools, but no luck so far. Does anyone
have some tips or suggestions to pinpoint the problem?

Regards,
Manuel