possible to find the size of a view


Hi guys,.

How do you guys normally find the size of the view?

I had a situation here.

DB_1 enjoys a view (created by selecting in tables via the union..)

DB_2 has a procedure that will refresh a materialized view (select * from < the_table_from _db_1) @DB_1_database; )

Question 1:

How can I find the size of the view which is called DB_1. I don't think that if I can use dba_segments to find the size that I can't find a segment_type which is = 'DISPLAY '.

Question2: the error below were reported by the team of apps.

*

ERROR on line 1:

ORA-12008: error path refresh materialized view

ORA-01652: unable to extend segment temp of 128 in tablespace TEMP

ORA-02063: preceding line DB_1

ORA-06512: at "SYS." DBMS_SNAPSHOT", line 2256

ORA-06512: at "SYS." DBMS_SNAPSHOT", line 2462

ORA-06512: at "SYS." DBMS_SNAPSHOT", line 2431

ORA-06512: at "FWSS. < Procedures > r_", line 6

ORA-06512: at line 1

I tried to look for similair error on both of my database alert log but it could not be found. The above error must be charged on the alert logs.

I saw many of the errors of the DB_1 alert log below.

ORA-1652: unable to extend segment temp of 128 in tablespace TEMP

So here's my question, getting the above error on DB_1 when DB_2 procedure call a refresh of its point of view of materliized which is to select the view via a link db DB_1?

I suspect that the view is too large, which is at the origin of the temp will apear error.

Hello

Yes, the temporary tablespaces are generally used for the sort operation or join operations that cannot be handled in RAM and should use the disk (temporary file). as you say, your MV is on DB_2 and extracted data DB_1, where the sqls are merged and executed and according to the size of the data, the class union itself causes trained him in the use of the temp space and since you don't have enough room temp the ORA-01652 survey database

for temporary tablespace all the sorting operations for instance share a single sort segment and this segment of the sort is assigned when the first statement ask the instance and can be communicated with the judgment. When the sort operation uses temp space extends the awarded are not automatically désallouées, however,

those are mark them as free and will be available for later use.

To your question, there could be a large operation that caused the tempfile to grows well in the database and once the operation is finished, the space

is not automatically released, so in managed locally temporary tablespace, you can reduce the tablespace temporary for free those allocated unused space.

In your situation you need not to shrink but to add tempfiles more.

Kind regards

Tags: Database

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