Jag använder denna procedur. Det är mer generiskt men passar dina behov:
PROCEDURE MaintainPartitions IS
EXPRESSION_IS_OF_WRONG_TYPE EXCEPTION;
PRAGMA EXCEPTION_INIT(EXPRESSION_IS_OF_WRONG_TYPE, -6550);
CURSOR PartTables IS
SELECT TABLE_NAME, INTERVAL
FROM USER_PART_TABLES
WHERE TABLE_NAME LIKE 'P_%'
AND PARTITIONING_TYPE = 'RANGE'
ORDER BY TABLE_NAME;
CURSOR TabParts(aTableName VARCHAR2) IS
SELECT PARTITION_NAME, HIGH_VALUE
FROM USER_TAB_PARTITIONS
WHERE TABLE_NAME = aTableName
ORDER BY PARTITION_POSITION;
ym INTERVAL YEAR TO MONTH;
ds INTERVAL DAY TO SECOND;
newPartName VARCHAR2(30);
PERIOD TIMESTAMP;
BEGIN
FOR aTab IN PartTables LOOP
BEGIN
EXECUTE IMMEDIATE 'BEGIN :ret := '||aTab.INTERVAL||'; END;' USING OUT ds;
ym := NULL;
EXCEPTION
WHEN EXPRESSION_IS_OF_WRONG_TYPE THEN
EXECUTE IMMEDIATE 'BEGIN :ret := '||aTab.INTERVAL||'; END;' USING OUT ym;
ds := NULL;
END;
FOR aPart IN TabParts(aTab.TABLE_NAME) LOOP
EXECUTE IMMEDIATE 'BEGIN :ret := '||aPart.HIGH_VALUE||'; END;' USING OUT PERIOD;
IF ds IS NOT NULL THEN
IF ds >= INTERVAL '7' DAY THEN
-- Weekly partition
EXECUTE IMMEDIATE 'BEGIN :ret := TO_CHAR('||aPart.HIGH_VALUE||' - :int, :fmt); END;' USING OUT newPartName, INTERVAL '1' DAY, '"P_"IYYY"W"IW';
ELSE
-- Daily partition
EXECUTE IMMEDIATE 'BEGIN :ret := TO_CHAR('||aPart.HIGH_VALUE||' - :int, :fmt); END;' USING OUT newPartName, INTERVAL '1' DAY, '"P_"YYYYMMDD';
END IF;
ELSE
IF ym = INTERVAL '3' MONTH THEN
-- Quarterly partition
EXECUTE IMMEDIATE 'BEGIN :ret := TO_CHAR('||aPart.HIGH_VALUE||' - :int, :fmt); END;' USING OUT newPartName, INTERVAL '1' DAY, '"P_"YYYY"Q"Q';
ELSE
-- Monthly partition
EXECUTE IMMEDIATE 'BEGIN :ret := TO_CHAR('||aPart.HIGH_VALUE||' - :int, :fmt); END;' USING OUT newPartName, INTERVAL '1' DAY, '"P_"YYYYMM';
END IF;
END IF;
IF newPartName <> aPart.PARTITION_NAME THEN
EXECUTE IMMEDIATE 'ALTER TABLE '||aTab.TABLE_NAME||' RENAME PARTITION '||aPart.PARTITION_NAME||' TO '||newPartName;
END IF;
END LOOP;
END LOOP;
END MaintainPartitions;