ADD SUPPLEMENTAL LOG Command in PDB is not reflected to v$database

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#数据库 #sql #oracle

当在Oracle数据库的PDB（Pluggable Database）中执行ADDSUPPLEMENTALLOG命令时，变化不会反映到V$DATABASE视图。实际上，PDB的补充日志信息无法通过V$DATABASE查询，应使用CDB_SUPPLEMENTAL_LOGGING视图来检查。解决方案是通过查询CDB_SUPPLEMENTAL_LOG视图来查看PDB的补充日志状态，并使用ALTER DATABASE命令进行相应设置。

ADD SUPPLEMENTAL LOG Command in PDB is not reflected to v$database (Doc ID 2198780.1)

APPLIES TO:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.

SYMPTOMS

When issuing ADD SUPPLEMENTAL LOG command in PDB, the change is not
reflected to V$DATABASE.

CHANGES

Run following commands inside a PDB.
Using "ALTER PLUGGABLE DATABASE" syntax also yields same result.

ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;
ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;
ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (FOREIGN KEY) COLUMNS;
ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (UNIQUE) COLUMNS;
ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (ALL) COLUMNS;
ALTER DATABASE ADD SUPPLEMENTAL LOG DATA FOR PROCEDURAL REPLICATION;

CAUSE

Supplemental Log information of individual PDB cannot be queried from V$DATABASE.
Use CDB_SUPPLEMENTAL_LOGGING dictionary view instead.

SOLUTION

To check supplemental log state of the PDB, query CDB_SUPPLEMENTAL_LOG view as in following example.

SYS@cdb1_pdb1> select * from dba_supplemental_logging ;

MINIMAL   PRIMARY_K UNIQUE_IN FOREIGN_K ALL_COLUM PROCEDURA
--------- --------- --------- --------- --------- ---------
NO        NO        NO        NO        NO        NO

SYS@cdb1_pdb1> ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;

Database altered.

SYS@cdb1_pdb1> select * from dba_supplemental_logging ;

MINIMAL   PRIMARY_K UNIQUE_IN FOREIGN_K ALL_COLUM PROCEDURA
--------- --------- --------- --------- --------- ---------
YES       NO        NO        NO        NO        NO

SYS@cdb1_pdb1> select * from cdb_supplemental_logging ;

MIN PRI UNI FOR ALL PRO CON_ID
--- --- --- --- --- --- ----------
YES YES NO NO NO NO 3

SYS@cdb1_pdb1> ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;

Database altered.

SYS@cdb1_pdb1> select * from dba_supplemental_logging ;

MINIMAL PRIMARY_K UNIQUE_IN FOREIGN_K ALL_COLUM PROCEDURA
--------- --------- --------- --------- --------- ---------
YES YES NO NO NO NO