我有一个表格,在BLOBs有110GB,一个图形中,我想将其复制到另一个图表中。
我只想复制一份源表一栏,因此,我正在使用最新资料,但复制3 GB数据需要2.5个小时。
这样做是否有更快的途径?
最新情况:
我使用的法典非常简单:
update schema1.A a set blobA = (select blobB from schema2. b b. IDB = a.IDA;
出生日期和地点为指数。
我有一个表格,在BLOBs有110GB,一个图形中,我想将其复制到另一个图表中。
我只想复制一份源表一栏,因此,我正在使用最新资料,但复制3 GB数据需要2.5个小时。
这样做是否有更快的途径?
最新情况:
我使用的法典非常简单:
update schema1.A a set blobA = (select blobB from schema2. b b. IDB = a.IDA;
出生日期和地点为指数。
检查在目的地表中是否有造成履约问题的指数,如果是,在数据从源表中的一栏复制到目的地表中的一栏之后,暂时予以撤销。
如果你在Oracle 10或11处,就检查ADDM,看看问题是什么。 这可能是I/O或交易记录问题。
储存的种类如何? 你们是否试图将110个GB档案从一个地方复制到另一个地方,以了解这一分类制度? 它需要多长时间?
我不知道矿石是否自动增加数据库的规模。 如果是的话,则将分配给数据库的空间数量增加到超过您在管理询问之前将要增加的空间。
我在服务器中知道,在设定违约时,当你开始填满时,它将自动再分配10%的数据库规模。 填满时,它停止一切,重新分配10%。 在提出大量数据的问题时,这可能会严重地减缓问题。
此外,正如Mandar所指出的,对磁盘IO进行检查。 如果时间过长,你可能因工作快而受到限制。
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