EXPDP Fails With ORA-04031 (streams pool, ...)

相信大家都有遇到ora-04031这种错误，在导出时也有这样的错误出现。

问题的症状：
expdp 报告如下错误：
ORA-31626: job does not exist
ORA-31637: cannot create job SYS_EXPORT_FULL_01 for user SYSTEM
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPV$FT_INT", line 600
ORA-39080: failed to create queues "KUPC$C_1_20070823095248" and "KUPC$S_1_20070
823095248" for Data Pump job
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPC$QUE_INT", line 1580
ORA-04031: unable to allocate 4194344 bytes of shared memory ("streams pool","unknown object","streams

pool","fixed allocation callback

问题原因：
这个问题是由于设置了初始化参数streams_pool_size 的值为0，错误的第一个提示 streams pool 就能够说明问题的原

因。
ora-4031 一般说明内存过小，应该加大内存的大小。
解决办法：
设置初始化参数streams_pool_size 的值最小为48m
alter system set streams_pool_size =48m；

Note: for a large database and/or high workload, the STREAMS_POOL_SIZE parameter may need to be higher

(如 150 MB) in order to avoid the ORA-4031 errors.

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