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From 12c, interval partitions has been enhanced to use reference partitioning, With this you can create a parent/child table with references in them using interval partitioning. The following is the test case. Create table EMPLOYEE ( EMPLOYEE_ID number primary key, EMPLOYEE_NAME varchar(25), JOINING_DATE date) PARTITION BY RANGE (JOINING_DATE) INTERVAL (NUMTOYMINTERVAL(1,’YEAR’)) ( PARTITION P_2013_06 VALUES LESS […] From 12c, you can truncate partitions from a referenced partition with cascade option. The following is the test case. Create table EMPLOYEE ( EMPLOYEE_ID number primary key, EMPLOYEE_NAME varchar(25), JOINING_DATE date) PARTITION BY RANGE (JOINING_DATE)( PARTITION P_2013_06 VALUES LESS THAN (to_date(’30-06-2013′,’dd-mm-yyyy’)) NOCOMPRESS, PARTITION P_2013_07 VALUES LESS THAN (to_date(’31-07-2013′,’dd-mm-yyyy’)) NOCOMPRESS, PARTITION P_2013_08 VALUES LESS THAN (to_date(’31-08-2013′,’dd-mm-yyyy’)) […] In 12c, Oracle introduced package to manage the global indexes orphan entry clean up and clearing up the online partition movement stuff. Here it is PROCEDURE CLEANUP_GIDX- To clean up the global indexes , this runs daily at 2.00AM via scheduler job automatically PROCEDURE CLEANUP_GIDX_INTERNAL – To clean up the internal tables PROCEDURE CLEANUP_ONLINE_OP […] Before to 12c, if you want to maintain partitions you will need to execute that many alter statements partition commands that many times. For example to add p7,p8 partitions, you have to use SQL> alter table test_tbl add partition p7 values less than (7) SQL> alter table test_tbl add partition p8 values less than […] Before to 12c, it is not possible to create a index for certain partitions or for the partitions you want. From 12c onwards, you can create the indexes (global or local) for specific partitions (not to all partitions) or for specific sub partitions (not to all sub partitions). This means indexes will be created […] From 12c onwards, partitions movement has been extended with "online clause", along with this global index are maintained during partition maintenance , hence manual rebuild of index is not required any more. Before proceeding with the test, here are some restriction as listed in documentation, ONLINE clause can’t be specified ?for tables owned by […] |
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Oracle 23c New Features for DBA's
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