Question

当我在Oracle 11g（11.2.0.1.0）中创建GLOBAL TEMPORARY TABLE，然后向其添加新列时，Oracle不会更新LAST_DDL_TIME column of the system catalog views（例如DBA_OBJECTS）：

create global temporary table test# (foo varchar2(3));
select last_ddl_time from dba_objects where object_name='TEST#';
-- Shows created time

-- Wait a minute 

alter table test# add (bar varchar(3));
select last_ddl_time from dba_objects where object_name='TEST#';
-- Shows NO UPDATE

-- Wait a minute

alter table test# drop (bar);
select last_ddl_time from dba_objects where object_name='TEST#';
-- Shows time when column was dropped

但是，当我在Oracle 12c（12.1.0.2.0）中执行相同的SQL语句序列时，LAST_DDL_TIME 会反映新添加的列。

create global temporary table test# (foo varchar2(3));
select last_ddl_time from dba_objects where object_name='TEST#';
-- Shows created time

-- Wait a minute 

alter table test# add (bar varchar(3));
select last_ddl_time from dba_objects where object_name='TEST#';
-- Shows time when column was added

-- Wait a minute

alter table test# drop (bar);
select last_ddl_time from dba_objects where object_name='TEST#';
-- Shows time when column was dropped

此行为似乎非常特定于将列添加到GLOBAL TEMPORARY TABLES和Oracle 11g;重命名或删除列会按预期影响LAST_DDL_TIME。

这是一个已知的Oracle 11g错误吗？！如果是这样，是否有正式的Oracle补丁更新？

LAST_DDL_TIME for GLOBAL TEMPORARY TABLE - Oracle 11g错误？

0 个答案: