The directory that you specify when you are prompted for ORACLE_BASE by
Oracle Universal Installer is stored in the Oracle home inventory.
Database Upgrade Assistant uses this value to derive the default
database locations and the DIAGNOSTIC_DEST parameter. The diagnostic
destination location contains all ADR directories (diagnostic files,
such as the alert logs, trace files, and so on). This diagnostic
destination directory is required while upgrading an earlier Oracle
Database release to Oracle Database 11g release of the database. If the
Oracle base directory already exists, then Oracle Database Upgrade
Assistant automatically retrieves this information and populates its
path. Starting with Oracle Database 11g Release 1, the initialization
parameter settings for background dump (BACKGROUND_DUMP_DEST), user dump
(USER_DUMP_DEST), and core dump (CORE_DUMP_DEST) destinations are
replaced by the Diagnostic Destination (DIAGNOSTIC_DEST). |
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