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标签归档:ORA-01502
move lob导致index失效
在一次数据库升级过程中,因为blug需要move lob,导致表相关index失效,这里通过实验重现
数据库版本
SQL> select * from v$version; BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production PL/SQL Release 11.2.0.4.0 - Production CORE 11.2.0.4.0 Production TNS for Linux: Version 11.2.0.4.0 - Production NLSRTL Version 11.2.0.4.0 - Production
创建用户
SQL> create user xff identified by oracle; User created. SQL> grant dba to xff; Grant succeeded.
创建测试表和插入数据
SQL> conn xff/oracle Connected. SQL> create table t_xff (id int primary key not null,name varchar2(20),c_lob clob); Table created. SQL> insert into t_xff values(1,'www.xifenfei.com','//www.xifenfei.com'); 1 row created. SQL> insert into t_xff values(2,'www.xifenfei.com','//www.xifenfei.com'); 1 row created. SQL> commit; Commit complete. SQL> select index_name,status from user_indexes; INDEX_NAME STATUS ------------------------------ -------- SYS_IL0000090094C00003$$ VALID SYS_C0011148 VALID
move lob
SQL> ALTER TABLE t_xff MOVE LOB (c_lob) store as (tablespace users); Table altered. SQL> select index_name,status from user_indexes; INDEX_NAME STATUS ------------------------------ -------- SYS_IL0000090094C00003$$ VALID SYS_C0011148 UNUSABLE SQL> insert into t_xff values(3,'www.xifenfei.com','//www.xifenfei.com'); insert into t_xff values(3,'www.xifenfei.com','//www.xifenfei.com') * ERROR at line 1: ORA-01502: index 'XFF.SYS_C0011148' or partition of such index is in unusable state
这里很明显,当我们move lob之后,表的index变为无效,插入操作无法进行
rebuind index
SQL> alter index xff.SYS_C0011148 rebuild; Index altered. SQL> select index_name,status from user_indexes; INDEX_NAME STATUS ------------------------------ -------- SYS_IL0000090094C00003$$ VALID SYS_C0011148 VALID SQL> insert into t_xff values(3,'www.xifenfei.com','//www.xifenfei.com'); 1 row created. SQL> commit; Commit complete.
这个测试就是告诫自己,做oracle 不要想当然,move lob之后,表相关的index 都会失效,需要rebuild。具体参见:
Bug 6525073 : STBH: INDEX IS IN UNUSABLE STATE AFTER A LOB COLUMN IS MOVED
ALTER TABLE MOVE LOB makes indexes unusable on the parent table (Doc ID 1228324.1)
ORA-1502问题分析解决
1、出现ORA-1502
接到开发报告,我们报表程序出现SQLCODE=[-1502]错误提示,sql执行不成功,根据这个提示,我猜想是ORA-1502错误,查询ora-1502错误
[oracle@node1 ~]$ oerr ora 1502 01502, 00000, "index '%s.%s' or partition of such index is in unusable state" // MERGE: 1489 RENUMBERED TO 1502 // *Cause: An attempt has been made to access an index or index partition // that has been marked unusable by a direct load or by a DDL // operation // *Action: DROP the specified index, or REBUILD the specified index, or // REBUILD the unusable index partition
根据这个提示,错误的原因是因为有index编程unusable state
--查询分区index是否有UNUSABLE的index SQL> col index_owner for a20 SQL> col index_name for a30 SQL> col partition_name for a20 SQL> SELECT INDEX_OWNER, INDEX_NAME, PARTITION_NAME 2 FROM DBA_IND_PARTITIONS 3 WHERE INDEX_OWNER NOT IN ('SYS', 'SYSTEM', 'PUBLIC') 4 AND STATUS = 'UNUSABLE'; INDEX_OWNER INDEX_NAME PARTITION_NAME -------------------- ------------------------------ -------------------- STAT_YDZJ IND_STAT_DAY_COMPANY_DAY P_201111 STAT_YDZJ IND_STAT_DAY_COMPANY_MOBILE P_201111 STAT_YDZJ IND_STAT_DAY_COMPANY_AREA P_201111 --查询无效全局index和普通index SQL> SELECT OWNER, a.index_name 2 FROM Dba_Indexes a 3 WHERE OWNER NOT IN ('SYS', 'SYSTEM', 'PUBLIC') 4 AND ROWNUM<2; OWNER INDEX_NAME ------------------------------ ------------------------------ STAT_YDZJ PK_ND_STAT_DAY_COMPANY
2、解决问题
批量生产sql语句,重建这些unusable index
SELECT 'ALTER INDEX ' || INDEX_OWNER || '.' || INDEX_NAME || ' REBUILD PARTITION ' || PARTITION_NAME || ' NOLOGGING online;' FROM DBA_IND_PARTITIONS WHERE INDEX_OWNER NOT IN ('SYS', 'SYSTEM', 'PUBLIC') AND STATUS = 'UNUSABLE' UNION ALL SELECT 'alter index ' ||OWNER || '.' || A.INDEX_NAME || ' REBUILD online nologging;' FROM DBA_INDEXES A WHERE OWNER NOT IN ('SYS', 'SYSTEM', 'PUBLIC') AND STATUS = 'UNUSABLE';
执行完上面sql生成语句后,让开发测试程序,反馈工作正常
3、问题分析
我昨天对STAT_DAY_COMPANY表添加了分区(SPLIT拆分MAXVALUE),本以为该表的所有index都是local index不知道为何有了一个全局index(公司规定所有分区表都只能建立local index),所以没有做相关查询,导致这次出现了index无效。但是为什么还有三个local index也变成了unusable,这个估计是大批量append插入数据导致。而开发那边正好是批量append插入数据到STAT_DAY_COMPANY表中,导致出现了ORA-1502错误
建议:处理分区表时,要对index查询清楚,不要按照规定或者惯性思维办事。