datafiles space allocation algorithm

Hi

Suppose we have 4 datafiles in a tablespace, when we load data into this tablespace how will Oracle assign the space? I thought it would use round-robin like but it does not.

Before load I had datafiles which looked like this:

TABLESPACE_NAME

FILE_NAME                                             BYTES
------------------------------
------------------------------------------------ ----------
PM_IND_T01


/u02/oradata/vmw1020/PM_IND_T01_SIMP001.dbf             16

PM_IND_T01


/u02/oradata/vmw1020/PM_IND_T01_SIMP002.dbf             16

After load it shows this:

TABLESPACE_NAME

FILE_NAME                                                         BYTES
------------------------------
------------------------------------------------------------ ----------
PM_IND_T01


/u02/oradata/vmw1020/PM_IND_T01_SIMP001.dbf                        272

PM_IND_T01


/u02/oradata/vmw1020/PM_IND_T01_SIMP002.dbf                       1984

How does this work?

Thanks

Alex

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