# Oracle and PostgreSQL configuration
<a name="chap-oracle-aurora-pg.configuration"></a>

This section provides pages about Oracle and PostgreSQL configuration topics.

**Topics**
+ [Oracle and Aurora for PostgreSQL upgrades](chap-oracle-aurora-pg.configuration.upgrades.md)
+ [Oracle Alert Log and PostgreSQL error log](chap-oracle-aurora-pg.configuration.errorlog.md)
+ [Oracle SGA and PGA memory sizing and PostgreSQL memory buffers](chap-oracle-aurora-pg.configuration.memory.md)
+ [Oracle instance parameters and Amazon RDS parameter groups](chap-oracle-aurora-pg.configuration.parameters.md)
+ [Oracle and PostgreSQL session parameters](chap-oracle-aurora-pg.configuration.session.md)