The following applies to upgrades starting on schema versions prior to 7.5.0.0.
To facilitate the process of upgrading the IN_DOC table in uptime, a copy of the IN_DOC table is created during the uptime steps and is synchronized with the original table until the downtime steps have completed. This requires that sufficient free space is available to accommodate the copy of the IN_DOC table and its indexes. Ensure that datafiles are configured to auto extend as needed and that the underlying disks have the capacity to accommodate the expected growth. For best results, manually resize the appropriate datafiles to pre-allocate the additional space to the respective tablespaces to help prevent waits attributed to the allocation of extents during the execution of the uptime steps.