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2026-03-12 20:23:15

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2026-03-12 21:23:47 +01:00
parent eab4b36eca
commit 93039b8489
3332 changed files with 699614 additions and 0 deletions
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69
vdh/get_compression_ratio.sql Normal file
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set sqlblanklines on
set feedback off
accept owner -
prompt 'Enter Value for owner: ' -
default 'KSO'
accept table_name -
prompt 'Enter Value for table_name: ' -
default 'SKEW'
accept comp_type -
prompt 'Enter Value for compression_type (OLTP): ' -
default 'OLTP'
DECLARE
l_blkcnt_cmp BINARY_INTEGER;
l_blkcnt_uncmp BINARY_INTEGER;
l_row_cmp BINARY_INTEGER;
l_row_uncmp BINARY_INTEGER;
l_cmp_ratio NUMBER;
l_comptype_str VARCHAR2 (200);
l_comptype number;
BEGIN
case '&&comp_type'
when 'OLTP' then l_comptype := DBMS_COMPRESSION.comp_for_oltp;
when 'QUERY' then l_comptype := DBMS_COMPRESSION.comp_for_query_low;
when 'QUERY_LOW' then l_comptype := DBMS_COMPRESSION.comp_for_query_low;
when 'QUERY_HIGH' then l_comptype := DBMS_COMPRESSION.comp_for_query_high;
when 'ARCHIVE' then l_comptype := DBMS_COMPRESSION.comp_for_archive_low;
when 'ARCHIVE_LOW' then l_comptype := DBMS_COMPRESSION.comp_for_archive_low;
when 'ARCHIVE_HIGH' then l_comptype := DBMS_COMPRESSION.comp_for_archive_high;
END CASE;
DBMS_COMPRESSION.get_compression_ratio (
scratchtbsname => 'USERS',
ownname => '&owner',
tabname => '&table_name',
partname => NULL,
comptype => l_comptype,
-- comptype => DBMS_COMPRESSION.comp_for_oltp,
-- comptype => DBMS_COMPRESSION.comp_for_query_low,
-- comptype => DBMS_COMPRESSION.comp_for_query_high,
-- comptype => DBMS_COMPRESSION.comp_for_archive_low,
-- comptype => DBMS_COMPRESSION.comp_for_archive_high,
blkcnt_cmp => l_blkcnt_cmp,
blkcnt_uncmp => l_blkcnt_uncmp,
row_cmp => l_row_cmp,
row_uncmp => l_row_uncmp,
cmp_ratio => l_cmp_ratio,
comptype_str => l_comptype_str
);
/*
DBMS_OUTPUT.put_line ('DBMS_COMPRESSION.comp_for_oltp=' || DBMS_COMPRESSION.comp_for_oltp);
DBMS_OUTPUT.put_line ('l_blkcnt_cmp=' || l_blkcnt_cmp);
DBMS_OUTPUT.put_line ('l_blkcnt_uncmp=' || l_blkcnt_uncmp);
DBMS_OUTPUT.put_line ('l_row_cmp=' || l_row_cmp);
DBMS_OUTPUT.put_line ('l_row_uncmp=' || l_row_uncmp);
DBMS_OUTPUT.put_line ('l_comptype_str=' || l_comptype_str);
*/
dbms_output.put_line(' ');
DBMS_OUTPUT.put_line ('Estimated Compression Ratio using '||l_comptype_str||': '|| round(l_cmp_ratio,3));
dbms_output.put_line(' ');
END;
/
undef owner
undef table_name
undef comp_type
set feedback on