ORA-08103: object no longer exists [How to Solve]

Today the toolbox reported the following error.

ORA-08103: object no longer exists

After checking the reason, there is a session operating the table, such as insert, update, etc.. And the toolbox operation happens to be in the select table, so the error is reported.

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ORA-08103: object no longer exists error.
The later description is that one of the processes is performing truncate and insert actions sequentially while another process is doing a select action on the
The latter description is that one of the processes performs truncate and insert actions sequentially, while another process does select on the same table, resulting in ora-8103
metalink information:

fact: Oracle Server – Enterprise Edition 8
symptom: Error performing a SELECT statement
symptom: ORA-08103: object no longer exists
symptom: Table is being truncated by other session
symptom: Analyze table validate structure cascade returns no errors
cause: This ORA-08103 occurs on the next block read after the truncate
command.
The LOCK TABLE IN EXCLUSIVE MODE does not prevent the table from being
SELECTED from. Thus, when the query has started and while this query runs
and the truncate occurs, this ORA-08103 may surface on the next block read.
This is considered intended behavior.
When a TRUNCATE occurs the DATAOBJ# in OBJ$ gets increased by one and thus
may lead to this ORA-08103 ‘object no longer exists’

fix:
Possible solutions are:
– Use DELETE instead of TRUNCATE
– Use SELECT FOR UPDATE as this will try to lock the table

Also ora-08103 has other explanations:
Solution: ‘ORA-8103: Object no longer exists’ When Insert Into External Table after Truncate With Storage Performed

Applies to:
Oracle Server – Enterprise Edition – Version: 10.2.0.1 to 10.2.0.3
This problem can occur on any platform.
Symptoms
The following error can occur on an insert with SQL Loader into an external organized table after a truncate with storage option has been performed
ORA-08103: object no longer exists

SQL> insert

/*+ PARALLEL(a, 8)*/

into iad_o_ast_new a

select /*+ full(b) parallel(b,8)*/

* from iad_o_ast_ext b

where rownum<10000 ;

into iad_o_ast_new a

*

ERROR at line 3:

ORA-08103: object no longer exists

.
Changes
The table was truncated with storage option before the insert .
Cause
The bitmap information is not correct after truncating with the storage option.  The solutions update the bitmap information in the tablespace.
Solution
There are two known solutions at this time.
1.  Add another datafile to increase the size of the tablespace for the insert.  You will need to still use the correct truncate option next time you truncate the table.
2.  Drop the table and recreate it.  You will need to still use the correct truncate option next time you truncate the table.
Do not truncate the table with the storage option.

Do not truncate the base table using:

truncate ;

truncate drop storage;

Use the following instead:

truncate reuse storage;

 


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