1. Database Release Notes
  2. Issues Affecting All Platforms for Oracle Database 18c
  3. Compatibility, Upgrading, Downgrading, and Installation

2.1 Compatibility, Upgrading, Downgrading, and Installation

This section describes compatibility, upgrading, downgrading, and installation topics for Oracle Database 18c.

Parent topic: Issues Affecting All Platforms for Oracle Database 18c

2.1.1 Downgrading Oracle Database 18c to Oracle Database 11g Release 2 (11.2.0.3) Results in Errors When Running utlrp.sql

This topic describes the ORA-00600 error that can occur when downgrading from Oracle Database 18c to Oracle Database 11g.

If SQLJ types are present when downgrading from Oracle Database 18c to Oracle Database 11g Release 2 (11.2.0.3), then the following ORA-00600 error can occur when running utlrp.sql to recompile invalid objects after running catrelod.sql (reference Bug 16230705): 

ORA-00600: internal error code, arguments: [16211]

Apply the patch for this bug and recompile the type using the ALTER TYPE COMPILE statement.

Parent topic: Compatibility, Upgrading, Downgrading, and Installation