[无解] Oracle 12c 可插拔数据库中遭遇 ORA-01295

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[无解] Oracle 12c 可插拔数据库中遭遇 ORA-01295

今天在Oracle 12c Pluggable Database环境中，准备 Flashback Transaction Query 案例时，遇到了 ORA-01295的错误。

SQL> SELECT versions_xid XID, versions_startscn START_SCN,
  2    versions_endscn END_SCN, versions_operation OPERATION,
  3    empname, salary
  4  FROM emp
  5  VERSIONS BETWEEN SCN MINVALUE AND MAXVALUE
  6  WHERE empno = 111;

XID               START_SCN    END_SCN OP EMPNAME                              SALARY
---------------- ---------- ---------- -- -------------------------------- ----------
0700170051040000    3913350            D  Mike                                    555
                               3913350    Mike                                    555

SQL> SELECT  xid, start_scn, commit_scn, operation, logon_user, undo_sql
  2  FROM flashback_transaction_query
  3  WHERE xid = HEXTORAW('0700170051040000');
WHERE xid = HEXTORAW('0700170051040000')
                                       *
第 3 行出现错误:
ORA-01295: 字典 USE_ONLINE_CATALOG 和日志文件之间的 DB_ID 不匹配

查询了很久，如何解决这个问题。因为在之前的版本上，这个问题很容易解决；但是Oracle 12c 的Pluggable数据库中怎么都解决不了。

最后终于发现问题所在，发帖“纪念”一下，我用掉的2个多小时时间。

参考Oracle官方文档：

https://docs.oracle.com/en/database/oracle/oracle-database/12.2/readm/features-not-available-12-2.html#GUID-F3D717CD-13DA-408B-8FE8-43CABAD21B58

Features Not Available or Restricted for a Multitenant Container Database in Oracle Database 12c Release 2 (12.2)

The following is a list of features that are not available or are restricted for a multitenant container database (CDB):

• Flashback Transaction Query (in both local undo mode and shared undo mode)

• Database Recovery Advisor

• Oracle Sharding

• Audit Vault Redo Collector

需要好好读读最新版的文档：

Oracle Database Readme 12c Release 2（12.2）_E85881-02（August 2018）