2026-03-12 20:23:15
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185
vg/sp_merge_convert_to_partitions.sql
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185
vg/sp_merge_convert_to_partitions.sql
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@@header
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set term off
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/*
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*
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* Author : Vishal Gupta
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* Purpose : To convert statspack tables into partitioned tables (based on DBID).
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* to hold consolidated data from multiple databases.
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* Version : 9.2.x, 10.2.x, 11.1.x, 11.2.x
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* Usage : Login as DBA and pass schema name holding the consolidated statspack repository
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* as argument
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* Syntax : scriptname.sql <schemaname>
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*
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* Revision History:
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* ===================
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* Date Author Description
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* --------- ------------ -----------------------------------------
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* 23-Oct-09 Vishal Gupta First Draft
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*/
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set term on
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set verify off
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set serveroutput on size 1000000
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DECLARE
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lv_sql VARCHAR2(4000) := null;
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lv_schema_owner VARCHAR2(30) := '&&1';
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lv_temporary_table_name VARCHAR2(30) := 'STATS$_TEMP';
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lv_num_errors PLS_INTEGER;
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BEGIN
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BEGIN
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execute immediate 'drop table ' || lv_schema_owner || '.' || lv_temporary_table_name;
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EXCEPTION
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WHEN others THEN
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null;
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END;
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DBMS_OUTPUT.put_LINE('Converting non partition tables to partitioned table ...' );
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-- Identify tables LIST paritioned on DBID
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FOR i in (SELECT t.owner, t.table_name , t.tablespace_name
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FROM dba_tables t
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WHERE t.owner = lv_schema_owner
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AND t.table_name like 'STATS$%'
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AND t.table_name <> lv_temporary_table_name
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AND t.PARTITIONED = 'NO'
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AND EXISTS (SELECT 1
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FROM dba_tab_columns c
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WHERE c.owner = t.owner
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AND c.table_name = t.table_name
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AND c.column_name = 'DBID')
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-- AND t.table_name = 'STATS$SNAPSHOT'
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ORDER BY t.table_name
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)
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LOOP
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DBMS_OUTPUT.put_LINE(' ...... ' || i.owner || '.' || i.table_name );
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BEGIN
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-- -- Cleanup the redefinition (if left over from previous failed runs)
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-- sys.DBMS_REDEFINITION.ABORT_REDEF_TABLE(uname => i.owner
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-- , orig_table => i.table_name
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-- , int_table => lv_temporary_table_name
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-- );
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-- Verify that the table is a candidate for online redefinition.
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sys.dbms_redefinition.can_redef_table(uname => i.owner
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, tname => i.table_name
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, options_flag => sys.dbms_redefinition.cons_use_rowid
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);
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-- Create interim partitioned table with same structure as non-partitioned table.
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lv_sql := 'create table ' || i.owner || '.' || lv_temporary_table_name
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|| ' partition by list (DBID) '
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|| ' ( PARTITION others VALUES (DEFAULT) ) '
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|| ' tablespace ' || i.tablespace_name
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|| ' pctfree 5 pctused 95 '
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|| ' as select * from ' || i.owner || '.' || i.table_name || ' where 1=2';
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execute immediate lv_sql;
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-- exit;
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-- Start the redefinition process
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sys.DBMS_REDEFINITION.START_REDEF_TABLE(uname => i.owner
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, orig_table => i.table_name
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, int_table => lv_temporary_table_name
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, options_flag => sys.dbms_redefinition.cons_use_rowid
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);
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-- Copy dependent objects. (Automatically create any triggers, indexes, materialized view logs,
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-- grants, and constraints
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sys.DBMS_REDEFINITION.COPY_TABLE_DEPENDENTS(uname => i.owner
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, orig_table => i.table_name
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, int_table => lv_temporary_table_name
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, copy_indexes => sys.DBMS_REDEFINITION.CONS_ORIG_PARAMS
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-- , copy_triggers => TRUE -- Default value
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-- , copy_constraints => TRUE -- Default value
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-- , copy_privileges => TRUE -- Default value
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, ignore_errors => TRUE
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, num_errors => lv_num_errors
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-- , copy_statistics => FALSE -- Default value
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-- , copy_mvlog => FALSE -- Default value
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);
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-- synchronize the interim table
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sys.DBMS_REDEFINITION.SYNC_INTERIM_TABLE(uname => i.owner
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, orig_table => i.table_name
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, int_table => lv_temporary_table_name
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);
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-- Complete the redefinition
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sys.DBMS_REDEFINITION.FINISH_REDEF_TABLE(uname => i.owner
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, orig_table => i.table_name
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, int_table => lv_temporary_table_name
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);
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EXCEPTION
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WHEN others THEN
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-- Abort the redefinition
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sys.DBMS_REDEFINITION.ABORT_REDEF_TABLE(uname => i.owner
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, orig_table => i.table_name
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, int_table => lv_temporary_table_name
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);
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-- Disable temporary Foreign keys created by re-definition process
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FOR cons in (SELECT *
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FROM dba_constraints
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WHERE constraint_type = 'R'
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AND constraint_name like 'TMP$$_%')
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LOOP
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lv_sql := 'alter table ' || cons.owner || '.' || cons.table_name || ' drop constraint ' || cons.constraint_name ;
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execute immediate lv_sql;
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END LOOP;
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-- Drop the interim table
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execute immediate 'drop table ' || lv_schema_owner || '.' || lv_temporary_table_name;
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-- Raise Exception
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RAISE;
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END;
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-- Disable temporary Foreign keys created by re-definition process
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FOR cons in (SELECT *
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FROM dba_constraints
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WHERE constraint_type = 'R'
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AND constraint_name like 'TMP$$_%')
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LOOP
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lv_sql := 'alter table ' || cons.owner || '.' || cons.table_name || ' drop constraint ' || cons.constraint_name ;
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execute immediate lv_sql;
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END LOOP;
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-- Drop the interim table
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execute immediate 'drop table ' || lv_schema_owner || '.' || lv_temporary_table_name;
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-- -- For each DBID value, create partition.
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-- FOR dbid in (SELECT DISTINCT dbid
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-- FROM stats$database_instance d
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-- WHERE NOT exists (SELECT 1
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-- FROM user_tab_partitions p
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-- WHERE p.table_name = i.table_name
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-- AND p.partition_name = 'P'||d.dbid
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-- )
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-- )
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-- LOOP
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-- lv_sql := 'alter table ' || i.table_name || ' split partition others values (' || dbid.dbid || ') '
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-- || ' into (partition p'|| dbid.dbid || ' , partition others )';
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-- -- DBMS_OUTPUT.put_LINE(lv_sql);
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-- -- add partitions
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-- DBMS_OUTPUT.put_LINE('Adding parition P' || dbid.dbid || ' FOR ' || i.table_name );
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-- execute immediate lv_sql;
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-- END LOOP;
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END LOOP;
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-- FOR i in ( SELECT 'alter index ' || index_name || ' rebuild partition ' || PARTITION_NAME lv_sql
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-- FROM user_ind_partitions
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-- WHERE status = 'UNUSABLE')
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-- LOOP
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-- execute immediate i.lv_sql;
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-- END LOOP;
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END;
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/
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