Team,
1)i have 2 SWP TABLES. while dropping a column, i am getting error -
ORA-39726: unsupported add/drop column operation on compressed tables.
2) when i checked compression status, those were not compressed. But as per our code standard, SWP tables should not be in compress mode.
OWNER TABLE_NAME COMPRESS COMPRESS_FOR
------------------------------ ------------------------------ -------- ------------
NOVAR PAYMENT_SWP DISABLED
OWNER TABLE_NAME COMPRESS COMPRESS_FOR
------------------------------ ------------------------------ -------- ------------
NOVAR PREPAYMENT_SWP DISABLED
3) as a workaround, i compressed these 2 SWP tables with OLTP option, and then i was able to drop the column from these 2 SWP tables.
4) please confirm whether below statement is correct or not ?
IF A TABLE USING BLOCK LEVEL COMPRESSION, THEN this error will come - ORA-39726: unsupported add/drop column operation on compressed tables.
if above statement is correct, then how to find out whether table data is using block level compression ?
5) we have DBMS_COMPRESSION.GET_COMPRESSION_TYPE. using this i just tried to find out, but i am getting "1" as output. I am not getting the exact meaning of it.
Please confirm what is the conclusion on this ?
SQL> declare
rid rowid;
n number;
begin
select max(rowid) into rid from NOVAR.PAYMENT_SWP;
n := dbms_compression.get_compression_type('NOVAR','PAYMENT_SWP',rid);
dbms_output.put_line(n);
end;
/
2 3 4 5 6 7 8 9 1
PL/SQL procedure successfully completed.
SQL>
SQL> SET SERVEROUTPUT ON
SQL> /
1
PL/SQL procedure successfully completed.
SQL> SELECT max(rowid) from NOVAR.PAYMENT_SWP;
MAX(ROWID)
------------------
AAsz4fAHSAAAD3IABs
(ii) 2nd table
SQL> set serveroutput on
SQL> declare
rid rowid;
n number;
begin
select max(rowid) into rid from NOVAR.PREPAYMENT_SWP;
n := dbms_compression.get_compression_type('NOVAR','PREPAYMENT_SWP',rid);
dbms_output.put_line(n);
end;
2 3 4 5 6 7 8 9
10 /
1
PL/SQL procedure successfully completed.
SQL> SELECT max(rowid) from NOVAR.INVOICELINE_SWP;
MAX(ROWID)
------------------
AAsz4ZAEkAAAp8XAAA
Thank you very much for your time on this.
-Kesavan
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