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