今天做實驗的時候建立了一個表空間lob_tbs, 並且在該表空間上建立了一個包含大物件欄位的表lob_tab。當實驗結束想要刪除該表空間時報錯ORA-22868。使用Oracle的幫助資訊oerr ora 22868很容易定位問題的原因，根據提示先刪除含有大欄位的表，然後在刪除該表空間就可以了。

問題還原如下：

1. 建立表空間lob_tbs

create tablespace lob_tbs datafile ‘/dbfiles/lob_tbs01.dbf’ size 100m

autoextend on extent management local;

2. 在users表空間建立表lob_tab, 大欄位列儲存在lob_tbs表空間中

create table lob_tab (id int, doc blog) tablespace users

lob(doc) store as securefile(tablespace lob_tbs compress high deduplicate);

3. 刪除表空間lob_tbs報錯ORA-22868

drop tablespace lob_tbs including contents;

drop tablespace lob_tbs including contents

*

ERROR at line 1:

ORA-22868: table with LOBs contains segments in different tablespaces

使用oerr幫助資訊查到提示drop these tables and reissure drop tablespace. 先刪除表，然後在刪除表空間

enmoedu1*PROD1 ~ $ oerr ora 22868

22868, 00000, "table with LOBs contains segments in different tablespaces"

// *Cause: An attempt was made to drop a tablespace which contains the

// segment(s) for the LOB columns of a table but does not contain

// the table segment.

// *Action: Find table(s) with LOB columns which have non-table segments in

// this tablespace. Drop these tables and reissue drop tablespace.

HR@PROD1 > drop table lob_tab;

SYS@PROD1 > drop tablespace lob_tbs;

Tablespace dropped.

遇到報錯資訊時，使用oerr可提供說明，甚至給出指導性建議來幫助我們處理問題。

全文完

ORA-22868: table with LOBs contains segments in different tablespaces

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