Free TableSpace in Oracle 8i

I am having a 25 GB Database in Oracle 8i. The tablespace is of around 26 GB and is having 14 datafiles. I deleted almost 50% data from the database that was not relevant. Though my application has gone fast but PCT_FREE and Free Bytes in tablespace has not changed. The values are same as they were before deletion.
I have even tried to coalesce the tablespace with following command
Alter Tablespace tbtrans coalesce;
but still used bytes are same. Please suggest how could I check amount of disp space freed after purging of database.

a 25Gb database with a 26Gb tablespace? How can a tablespace be bigger than the whole database???
PCT_FREE is not supposed to changed, read your oracle documentation. PCT_FREE is a setting for Dictionary Managed Tablespace.
Free Bytes ? Where did you look this? In DBA_SEGMENTS?
50% does not mean that some extent has been freed. If you have a hudge NEXT_EXTENT or PCTINCREASE>0, then it is quite probable that no segment has been freed.
coalesce does not free any extent, but it combines free extents into larger contigous extent.
HTH
Laurent
Message was edited by:
laurentschneider

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>
how SMON coalesces free space in oracle 9i and 10g?
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Free TableSpace in Oracle 8i

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