예전 프로젝트에서 간단한 ETL 유틸리티 패키지를 작성했다.
패키지 사용법은 아래와 같다. 적재 전에 prc_begin_etl 프로시저를 수행하고, 적재 후에 prc_end_etl 프로시저를 수행하면 된다. 병렬도는 세그먼트 사이즈에 따라 자동으로 설정된다.
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-- 1fnc_get_partition_name (i_owner, i_table_name, i_partition_key_value);fnc_get_subpartition_name (i_owner, i_table_name, i_subpartition_key_value);-- 2prc_truncate_table (i_owner, i_table_name);prc_truncate_partition (i_owner, i_table_name, i_partition_name);prc_truncate_subpartition (i_owner, i_table_name, i_subpartition_name);-- 3prc_begin_etl (i_owner, i_table_name, i_partition_name); - prc_nologging_table (i_owner, i_table_name); - prc_disable_constraint (i_owner, i_table_name); - prc_unusable_index (i_owner, i_table_name, i_partition_name);-- 4INSERT-- 5prc_end_etl (i_owner, i_table_name, i_partition_name); - prc_rebuild_index (i_owner, i_table_name, i_partition_name); - prc_enable_constraint (i_owner, i_table_name); - prc_logging_table (i_owner, i_table_name);-- 6prc_gather_table_stats (i_owner, i_table_name, i_partition_name); |
패키지 소스는 아래와 같다. 테스트 환경에서 검증 후 사용해야 한다.
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CREATE OR REPLACE PACKAGE pkg_utl_etlIS -------------------------------------------------- -- pkg_utl_etl -------------------------------------------------- FUNCTION fnc_get_partition_name ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_key_value IN VARCHAR2 ) RETURN VARCHAR2; FUNCTION fnc_get_subpartition_name ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_subpartition_key_value IN VARCHAR2 ) RETURN VARCHAR2; PROCEDURE prc_begin_etl ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL ); PROCEDURE prc_end_etl ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL ); PROCEDURE prc_nologging_table ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ); PROCEDURE prc_logging_table ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ); PROCEDURE prc_disable_constraint ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ); PROCEDURE prc_enable_constraint ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ); PROCEDURE prc_unusable_index ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL ); PROCEDURE prc_rebuild_index ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL ); PROCEDURE prc_truncate_table ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ); PROCEDURE prc_truncate_partition ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 ); PROCEDURE prc_truncate_subpartition ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_subpartition_name IN VARCHAR2 ); PROCEDURE prc_gather_table_stats ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL , i_granularity IN VARCHAR2 DEFAULT DBMS_STATS.DEFAULT_GRANULARITY );END pkg_utl_etl;/CREATE OR REPLACE PACKAGE BODY pkg_utl_etlIS -------------------------------------------------- -- fnc_get_partition_name -------------------------------------------------- FUNCTION fnc_get_partition_name ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_key_value IN VARCHAR2 ) RETURN VARCHAR2 IS l_sql_text VARCHAR2(32767); l_partition_position dba_tab_partitions.partition_position%TYPE; l_partition_name dba_tab_partitions.partition_name%TYPE; BEGIN l_sql_text := 'SELECT TBL$OR$IDX$PART$NUM ({OWNER}.{TABLE_NAME}, 0, 1, 0, {PARTITION_KEY_VALUE}) FROM DUAL'; l_sql_text := REPLACE (l_sql_text, '{OWNER}', i_owner); l_sql_text := REPLACE (l_sql_text, '{TABLE_NAME}', i_table_name); l_sql_text := REPLACE (l_sql_text, '{PARTITION_KEY_VALUE}', i_partition_key_value); EXECUTE IMMEDIATE l_sql_text INTO l_partition_position; SELECT partition_name INTO l_partition_name FROM dba_tab_partitions WHERE table_owner = i_owner AND table_name = i_table_name AND partition_position = l_partition_position; RETURN l_partition_name; EXCEPTION WHEN OTHERS THEN RETURN 'NONE'; END fnc_get_partition_name; -------------------------------------------------- -- fnc_get_subpartition_name -------------------------------------------------- FUNCTION fnc_get_subpartition_name ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_subpartition_key_value IN VARCHAR2 ) RETURN VARCHAR2 IS l_sql_text VARCHAR2(32767); l_object_id dba_objects.object_id%TYPE; l_subobject_name dba_objects.subobject_name%TYPE; BEGIN l_sql_text := 'SELECT TBL$OR$IDX$PART$NUM ({OWNER}.{TABLE_NAME}, 0, 3, 0, {SUBPARTITION_KEY_VALUE}) FROM DUAL'; l_sql_text := REPLACE (l_sql_text, '{OWNER}', i_owner); l_sql_text := REPLACE (l_sql_text, '{TABLE_NAME}', i_table_name); l_sql_text := REPLACE (l_sql_text, '{SUBPARTITION_KEY_VALUE}', i_subpartition_key_value); EXECUTE IMMEDIATE l_sql_text INTO l_object_id; SELECT subobject_name INTO l_subobject_name FROM dba_objects WHERE object_id = l_object_id; RETURN l_subobject_name; EXCEPTION WHEN OTHERS THEN RETURN 'NONE'; END fnc_get_subpartition_name; -------------------------------------------------- -- fnc_get_degree -------------------------------------------------- FUNCTION fnc_get_degree ( i_owner IN VARCHAR2 , i_segment_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL ) RETURN NUMBER IS l_bytes dba_segments.bytes%TYPE; BEGIN IF i_partition_name IS NULL THEN SELECT SUM (bytes) INTO l_bytes FROM dba_segments WHERE owner = i_owner AND segment_name = i_segment_name; ELSE SELECT bytes INTO l_bytes FROM dba_segments WHERE owner = i_owner AND segment_name = i_segment_name AND partition_name = i_partition_name; END IF; RETURN GREATEST (LEAST (CEIL (l_bytes / POWER (1024, 3)), 32), 4); -- ! EXCEPTION WHEN OTHERS THEN RETURN 2; END fnc_get_degree; -------------------------------------------------- -- prc_begin_etl -------------------------------------------------- PROCEDURE prc_begin_etl ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL ) IS BEGIN prc_nologging_table (i_owner, i_table_name); prc_disable_constraint (i_owner, i_table_name); prc_unusable_index (i_owner, i_table_name, i_partition_name); END prc_begin_etl; -------------------------------------------------- -- prc_end_etl -------------------------------------------------- PROCEDURE prc_end_etl ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL ) IS BEGIN prc_rebuild_index (i_owner, i_table_name, i_partition_name); prc_enable_constraint (i_owner, i_table_name); prc_logging_table (i_owner, i_table_name); END prc_end_etl; -------------------------------------------------- -- prc_nologging_table -------------------------------------------------- PROCEDURE prc_nologging_table ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ) IS BEGIN EXECUTE IMMEDIATE 'ALTER TABLE ' || i_owner || '.' || i_table_name || ' NOLOGGING'; END prc_nologging_table; -------------------------------------------------- -- prc_logging_table -------------------------------------------------- PROCEDURE prc_logging_table ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ) IS BEGIN EXECUTE IMMEDIATE 'ALTER TABLE ' || i_owner || '.' || i_table_name || ' LOGGING'; END prc_logging_table; -------------------------------------------------- -- prc_disable_constraint -------------------------------------------------- PROCEDURE prc_disable_constraint ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ) IS BEGIN FOR f IN (SELECT constraint_name FROM dba_constraints WHERE owner = i_owner AND table_name = i_table_name AND constraint_type IN ('P', 'U') AND status = 'ENABLED') LOOP EXECUTE IMMEDIATE 'ALTER TABLE ' || i_owner || '.' || i_table_name || ' MODIFY CONSTRAINT ' || f.constraint_name || ' DISABLE KEEP INDEX'; END LOOP; END prc_disable_constraint; -------------------------------------------------- -- prc_enable_constraint -------------------------------------------------- PROCEDURE prc_enable_constraint ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ) IS BEGIN FOR f IN (SELECT constraint_name FROM dba_constraints WHERE owner = i_owner AND table_name = i_table_name AND constraint_type IN ('P', 'U') AND status = 'DISABLED') LOOP EXECUTE IMMEDIATE 'ALTER TABLE ' || i_owner || '.' || i_table_name || ' MODIFY CONSTRAINT ' || f.constraint_name || ' ENABLE'; END LOOP; END prc_enable_constraint; -------------------------------------------------- -- prc_unusable_index -------------------------------------------------- PROCEDURE prc_unusable_index ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL ) IS BEGIN FOR f IN (SELECT owner , index_name FROM dba_indexes WHERE table_owner = i_owner AND table_name = i_table_name AND status = 'VALID') LOOP EXECUTE IMMEDIATE 'ALTER INDEX ' || f.owner || '.' || f.index_name || ' UNUSABLE'; END LOOP; FOR f IN (SELECT a.owner , a.index_name , b.partition_name FROM dba_part_indexes a , dba_ind_partitions b WHERE a.owner = i_owner AND a.table_name = i_table_name AND a.subpartitioning_type = 'NONE' AND a.locality = 'LOCAL' AND b.index_owner = a.owner AND b.index_name = a.index_name AND b.partition_name = NVL (i_partition_name, partition_name) AND b.status = 'USABLE') LOOP EXECUTE IMMEDIATE 'ALTER INDEX ' || f.owner || '.' || f.index_name || ' MODIFY PARTITION ' || f.partition_name || ' UNUSABLE'; END LOOP; FOR f IN (SELECT a.owner , a.index_name , b.subpartition_name FROM dba_part_indexes a , dba_ind_subpartitions b WHERE a.owner = i_owner AND a.table_name = i_table_name AND a.subpartitioning_type <> 'NONE' AND a.locality = 'LOCAL' AND b.index_owner = a.owner AND b.index_name = a.index_name AND b.subpartition_name = NVL (i_partition_name, subpartition_name) AND b.status = 'USABLE') LOOP EXECUTE IMMEDIATE 'ALTER INDEX ' || f.owner || '.' || f.index_name || ' MODIFY SUBPARTITION ' || f.subpartition_name || ' UNUSABLE'; END LOOP; END prc_unusable_index; -------------------------------------------------- -- prc_rebuild_index -------------------------------------------------- PROCEDURE prc_rebuild_index ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL ) IS l_degree NUMBER; BEGIN l_degree := fnc_get_degree (i_owner, i_table_name); FOR f IN (SELECT owner , index_name FROM dba_indexes WHERE table_owner = i_owner AND table_name = i_table_name AND status = 'UNUSABLE') LOOP EXECUTE IMMEDIATE 'ALTER INDEX ' || f.owner || '.' || f.index_name || ' REBUILD NOLOGGING PARALLEL ' || l_degree; EXECUTE IMMEDIATE 'ALTER INDEX ' || f.owner || '.' || f.index_name || ' LOGGING NOPARALLEL'; END LOOP; FOR f IN (SELECT a.owner , a.index_name , b.partition_name FROM dba_part_indexes a , dba_ind_partitions b WHERE a.owner = i_owner AND a.table_name = i_table_name AND a.subpartitioning_type = 'NONE' AND a.locality = 'LOCAL' AND b.index_owner = a.owner AND b.index_name = a.index_name AND b.partition_name = NVL (i_partition_name, partition_name) AND b.status = 'UNUSABLE') LOOP l_degree := fnc_get_degree (i_owner, i_table_name, f.partition_name); EXECUTE IMMEDIATE 'ALTER INDEX ' || f.owner || '.' || f.index_name || ' REBUILD PARTITION ' || f.partition_name || ' NOLOGGING PARALLEL ' || l_degree; EXECUTE IMMEDIATE 'ALTER INDEX ' || f.owner || '.' || f.index_name || ' MODIFY PARTITION ' || f.partition_name || ' LOGGING'; END LOOP; FOR f IN (SELECT a.owner , a.index_name , b.subpartition_name FROM dba_part_indexes a , dba_ind_subpartitions b WHERE a.owner = i_owner AND a.table_name = i_table_name AND a.subpartitioning_type <> 'NONE' AND a.locality = 'LOCAL' AND b.index_owner = a.owner AND b.index_name = a.index_name AND b.subpartition_name = NVL (i_partition_name, subpartition_name) AND b.status = 'UNUSABLE') LOOP l_degree := fnc_get_degree (i_owner, i_table_name, f.subpartition_name); EXECUTE IMMEDIATE 'ALTER INDEX ' || f.owner || '.' || f.index_name || ' REBUILD SUBPARTITION ' || f.subpartition_name || ' NOLOGGING PARALLEL ' || l_degree; EXECUTE IMMEDIATE 'ALTER INDEX ' || f.owner || '.' || f.index_name || ' MODIFY SUBPARTITION ' || f.subpartition_name || ' LOGGING'; END LOOP; END prc_rebuild_index; -------------------------------------------------- -- prc_truncate_table -------------------------------------------------- PROCEDURE prc_truncate_table ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 ) IS BEGIN EXECUTE IMMEDIATE 'TRUNCATE TABLE ' || i_owner || '.' || i_table_name || ' DROP ALL STORAGE'; END prc_truncate_table; -------------------------------------------------- -- prc_truncate_partition -------------------------------------------------- PROCEDURE prc_truncate_partition ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 ) IS BEGIN EXECUTE IMMEDIATE 'ALTER TABLE ' || i_owner || '.' || i_table_name || ' TRUNCATE PARTITION ' || i_partition_name || ' DROP ALL STORAGE'; END prc_truncate_partition; -------------------------------------------------- -- prc_truncate_subpartition -------------------------------------------------- PROCEDURE prc_truncate_subpartition ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_subpartition_name IN VARCHAR2 ) IS BEGIN EXECUTE IMMEDIATE 'ALTER TABLE ' || i_owner || '.' || i_table_name || ' TRUNCATE SUBPARTITION ' || i_subpartition_name || ' DROP ALL STORAGE'; END prc_truncate_subpartition; -------------------------------------------------- -- prc_gather_table_stats -------------------------------------------------- PROCEDURE prc_gather_table_stats ( i_owner IN VARCHAR2 , i_table_name IN VARCHAR2 , i_partition_name IN VARCHAR2 DEFAULT NULL , i_granularity IN VARCHAR2 DEFAULT DBMS_STATS.DEFAULT_GRANULARITY ) IS l_degree NUMBER; BEGIN l_degree := fnc_get_degree (i_owner, i_table_name, i_partition_name); CASE WHEN i_partition_name IS NULL THEN DBMS_STATS.GATHER_TABLE_STATS (ownname => i_owner, tabname => i_table_name, degree => l_degree); ELSE DBMS_STATS.GATHER_TABLE_STATS (ownname => i_owner, tabname => i_table_name, partname => i_partition_name, degree => l_degree, granularity => i_granularity); END CASE; END prc_gather_table_stats;END pkg_utl_etl;/ |
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