使用expdp/impdp导出导入数据时,遇到ORA-2000错误,如下所示: 导出环境为Oracle 12c,导入的数据库环境为Oracle 19c,具体版本为19.16.0.0.0,查了一下Oracle Support,刚好是遇到了Bug 30978304,关于为什么会出现这个错误,ORA-20000 from Data Pump Import (IMPDP) when PK Constraint does not Create a New Index (Doc ID 2679433.1)[1]中,有详细的案例描述,这里就没有必要自己再构造一个案例来描述出现ORA-20000错误的场景,具体如下所示: Bug 30978304 - ORA-20000 During Data Pump Import While Importing Statistics (Doc ID 30978304.8)[2]影响的版本还蛮多的,如下截图所示 Bug 30978304的详细描述如下所示: 这里记录一下今天遇到的案例,了解一下问题的来龙去脉。 : https://support.oracle.com/epmos/faces/SearchDocDisplay?_adf.ctrl-state=g9qrlq9os_4&_afrLoop=203438157763988 : https://support.oracle.com/epmos/faces/SearchDocDisplay?_afrLoop=211126172370682&_afrWindowMode=0&_adf.ctrl-state=iqtartzdc_4Processing object type SCHEMA_EXPORT/TABLE/GRANT/OWNER_GRANT/OBJECT_GRANT
Processing object type SCHEMA_EXPORT/TABLE/COMMENT
Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
Processing object type SCHEMA_EXPORT/STATISTICS/MARKER
xxxx.xxxxx : sqlerrm = ORA-20000: Unable to set values for index xxx: does not exist or insufficient privileges
Importing statistics failed for 1 object(s); APPLIES TO:
Oracle Database - Enterprise Edition - Version 19.1.0.0.0 and later
Information in this document applies to any platform.
SYMPTOMS
While running Data Pump Import (IMPDP) with STATISTICS, the order of creating indexes and constraints allowed a primary key constraint to reference a user created index rather than creating a new index as it should.
A simplified test case:
SQL> drop user INDEXTEST cascade;
SQL> create user INDEXTEST identified by INDEXTEST;
SQL> grant dba to INDEXTEST;
SQL> connect INDEXTEST/INDEXTEST
SQL> create table i_test (id number, t1 varchar2(100), t2 varchar2(100));
SQL> alter table i_test add constraint i_test_pk primary key (id, t1, t2);
SQL> insert into i_test values (1,1,1);
SQL> commit;
SQL> create unique index i_test_idx on i_test(id, t2, t1);
SQL> select index_name from user_indexes;
SQL> select constraint_name from user_constraints;
SQL> EXEC DBMS_STATS.GATHER_SCHEMA_STATS('INDEXTEST');
SQL> !expdp system/<Password> schemas=INDEXTEST dumpfile=INDEXTEST reuse_dumpfiles=y
SQL> connect system/<Password>
SQL> drop user INDEXTEST cascade;
SQL> !impdp system/<Password> schemas=INDEXTEST dumpfile=INDEXTEST
Import: Release 19.0.0.0.0 - Production on Mon Mar 2 19:08:53 2020 Version 19.3.0.0.0
Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Master table "SYSTEM"."SYS_IMPORT_SCHEMA_01" successfully loaded/unloaded
Starting "SYSTEM"."SYS_IMPORT_SCHEMA_01": system/******** schemas=INDEXTEST
dumpfile=INDEXTEST
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/TABLE/TABLE
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
. . imported "INDEXTEST"."I_TEST" 5.898 KB 1 rows
Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
Processing object type SCHEMA_EXPORT/STATISTICS/MARKER
INDEXTEST.I_TEST_PK : sqlerrm = ORA-20000: Unable to set values for index I_TEST_PK: does not exist or insufficient privileges Importing statistics failed for 1 object(s);
Job "SYSTEM"."SYS_IMPORT_SCHEMA_01" completed with 2 error(s) at Mon Mar 2
19:09:13 2020 elapsed 0 00:00:19
SQL> connect INDEXTEST/INDEXTEST
SQL> select index_name from user_indexes;
SQL> select constraint_name from user_constraints;
SQL> exit;
Note: It was reported that this issue also exists when the column order is the same, but the user created index has an extra column.
CHANGES
The database was upgraded to 19c release or higher. The issue did not reproduce in 12.2 or 18c environments.
CAUSE
This issue is caused by a product defect.
It was investigated in:
unpublished Bug 30978304 - ORA-20000 DURING IMPDP WITH STATS AND THE UNIQUE INDEX FOR THE PK IS NOT CREATED
Reference:
Bug 30978304 - ORA-20000 During Data Pump Import While Importing Statistics (Document 30978304.8)Description
ORA-20000 error was occurring with Data Pump importing statistics, with certain combinations of indexes.
This has now been fixed.
What Happens?
After importing a transportable tablespace, extents belonging to an index are
incorrectly marked as unallocated in the tablespace bitmaps. This leads to
objd mismatch asserts because such extents could eventually be allocated to
another object.
Conditions
The export-side must have the following properties:
There is a user-created table with a multi-column PK constraint in the table
DDL. This constraint has a system-generated unique index (say ABC).
There is a user-created unique index (say XYZ) on the same columns as the PK,
but the column ordering differs.
Note that if the column ordering matches, XYZ creation would have failed with
ORA-1408 and this bug wont occur.
Fix
The fix forces the creation of ABC earlier. This resolves the corruption
REDISCOVERY INFORMATION:
ORA-20000 occurring while impdp is importing statistics, when two or more indexes exist on a table and
one of them is a primary key index.
Additional symptoms:
TTS import from a 12.1 DB to 19c corrupts the Tablespace bitmaps which can
result in the following errors being raised for operations on segments
belonging to the Tablespace :
1. ORA-8103
2. ORA-600 [kcl_mismatch_1]
3. ORA-600 [kdifind:kcbz_objdchk]
4. ORA-600 [ktrget2:kcbz_objdchk]
5. ORA-600 [ktspffbmb:objdchk_kcbnew_3]
6. ORA-600 [ktspgtb2:kcbz_objdchk]
Workaround
None.
You can likely get this fix in:
Data Pump Recommended Proactive Patches For 19.10 and Above (Doc ID 2819284.1)参考资料