Oracle：impdp导入等待statement suspended, wait error to be cleared

用数据泵impdp往开发数据库导数据，但导入到INDEX时感觉卡住不动了

Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX
----查看状态，Completed Objects: 33一直没有变化。
Import> status
Job: SYS_IMPORT_FULL_01
  Operation: IMPORT                         
  Mode: FULL                           
  State: EXECUTING                      
  Bytes Processed: 843,222,272
  Percent Done: 99
  Current Parallelism: 1
  Job Error Count: 0
  Dump File: /home/oracle/dump/wj_dev%u.dmp
  Dump File: /home/oracle/dump/wj_dev01.dmp
  Dump File: /home/oracle/dump/wj_dev02.dmp
  Dump File: /home/oracle/dump/wj_dev03.dmp
  Dump File: /home/oracle/dump/wj_dev04.dmp
  Dump File: /home/oracle/dump/wj_dev05.dmp
  Dump File: /home/oracle/dump/wj_dev06.dmp
  Dump File: /home/oracle/dump/wj_dev07.dmp
  Dump File: /home/oracle/dump/wj_dev08.dmp
  Dump File: /home/oracle/dump/wj_dev09.dmp
  Dump File: /home/oracle/dump/wj_dev10.dmp
  
Worker 1 Status:
  Process Name: DW00
  State: EXECUTING                      
  Object Schema: ESOP2TEST
  Object Name: SYS_MSISDNNUMID
  Object Type: SCHEMA_EXPORT/TABLE/INDEX/INDEX
  Completed Objects: 33
  Worker Parallelism: 1

查看导入任务对应的会话做在等待什么

SQL> select * from DBA_DATAPUMP_JOBS;

OWNER_NAME JOB_NAME			  OPERATION			 JOB_MODE			STATE				   DEGREE ATTACHED_SESSIONS DATAPUMP_SESSIONS
---------- ------------------------------ ------------------------------ ------------------------------ ------------------------------ ---------- ----------------- -----------------
SYS	   SYS_IMPORT_FULL_01		  IMPORT			 FULL				EXECUTING				1		  2		    4

SQL> select sid,sql_id,event from v$session where action='SYS_IMPORT_FULL_01';

       SID SQL_ID	 EVENT
---------- ------------- ----------------------------------------------------------------
       146 bjf05cwcj5s6p wait for unread message on broadcast channel
       295 58rzgvcv6gnjs statement suspended, wait error to be cleared

从上面的查询中可以看到“statement suspended, wait error to be cleared”等待事件，这个是一个不常见的等待事件。

继续查看alert日志，发现如下报错：

statement in resumable session 'SYS.SYS_IMPORT_FULL_01.1' was suspended due to
    ORA-01652: unable to extend temp segment by 128 in tablespace TEMP

看到上面的报错就能明白为什么导入会卡住不动了，正在导入INDEX，创建索引会使用临时表空间，但临时文件太小又没有设置自动扩展导致创建索引语句HANG住。启用临时文件的自动扩展问题解决：

alter database tempfile '/oradata/dbs/temp01.dbf' autoextend on next 100m;

导入正常：

Import> status

Job: SYS_IMPORT_FULL_01
  Operation: IMPORT                         
  Mode: FULL                           
  State: EXECUTING                      
  Bytes Processed: 843,222,272
  Percent Done: 99
  Current Parallelism: 1
  Job Error Count: 0
  Dump File: /home/oracle/dump/wj_dev%u.dmp
  Dump File: /home/oracle/dump/wj_dev01.dmp
  Dump File: /home/oracle/dump/wj_dev02.dmp
  Dump File: /home/oracle/dump/wj_dev03.dmp
  Dump File: /home/oracle/dump/wj_dev04.dmp
  Dump File: /home/oracle/dump/wj_dev05.dmp
  Dump File: /home/oracle/dump/wj_dev06.dmp
  Dump File: /home/oracle/dump/wj_dev07.dmp
  Dump File: /home/oracle/dump/wj_dev08.dmp
  Dump File: /home/oracle/dump/wj_dev09.dmp
  Dump File: /home/oracle/dump/wj_dev10.dmp
  
Worker 1 Status:
  Process Name: DW00
  State: EXECUTING                      
  Object Schema: SUF3TEST
  Object Name: IDX_ORDER_MEMBER_CHARACTER_ID
  Object Type: SCHEMA_EXPORT/TABLE/INDEX/INDEX
  Completed Objects: 407
  Worker Parallelism: 1