Hi,
I will explain How to Upgrade Timezone ( DST ) Manually During Oracle 12c Upgrade.
If you want to learn how to Upgrade database from Oracle 11g to Oracle 12.2, you can read the following article.
Manual Upgrade Oracle Database From 11.2.0.4 to 12.2.0.1 without DBUA
Our Timezone version was 14 before Oracle 12.2 upgrade as follows.
SQL> select TZ_VERSION from registry$database; TZ_VERSION ---------- 14
Once Oracle 12.2 upgrade is completed, I have also upgraded Timezone to 28 with the following steps.
Step-1: Shutdown database and startup database in upgrade mode as follows.
SQL> shu immediate Database closed. Database dismounted. ORACLE instance shut down. SQL> SQL> SQL> startup upgrade; ORA-32004: obsolete or deprecated parameter(s) specified for RDBMS instance ORACLE instance started. Total System Global Area 2.7488E+11 bytes Fixed Size 29906208 bytes Variable Size 2.6307E+10 bytes Database Buffers 2.4803E+11 bytes Redo Buffers 506961920 bytes Database mounted. Database opened. SQL>
Step-2: Purge Recycle bin and set the following Oracle hidden parameters.
SQL> purge dba_recyclebin; DBA Recyclebin purged. SQL> SQL> alter session set "_simple_view_merging"=TRUE; Session altered. SQL> alter session set "_with_subquery"=materialize; Session altered. SQL>
Step-3: Run the prepare step.
exec DBMS_DST.BEGIN_PREPARE(26);
Step-4: Truncate the following tables.
SQL>TRUNCATE TABLE SYS.DST$TRIGGER_TABLE; Table truncated. SQL>TRUNCATE TABLE sys.dst$affected_tables; Table truncated. SQL>TRUNCATE TABLE sys.dst$error_table; Table truncated.
Step-5: Query the tables if they keep any data or not.
SQL> select * from sys.dst$affected_tables; no rows selected SQL> select * from sys.dst$error_table; no rows selected SQL> SQL>
Step-6: Run the timezone upgrade scripts as follows.
SQL> EXEC DBMS_APPLICATION_INFO.SET_CLIENT_INFO('upg_tzv'); PL/SQL procedure successfully completed. SQL>
SQL> exec DBMS_DST.BEGIN_UPGRADE(26); PL/SQL procedure successfully completed. SQL> SELECT * FROM sys.dst$error_table; no rows selected SQL> SELECT PROPERTY_NAME, SUBSTR(property_value, 1, 30) value FROM DATABASE_PROPERTIES WHERE PROPERTY_NAME LIKE 'DST_%' ORDER BY PROPERTY_NAME; 2 3 4 PROPERTY_NAME VALUE -------------------------------------------------------------------------------------------------------------------------------- ------------------------------ DST_PRIMARY_TT_VERSION 26 DST_SECONDARY_TT_VERSION 14 DST_UPGRADE_STATE UPGRADE SQL> SQL> alter session set "_with_subquery"=materialize; alter session set "_simple_view_merging"=TRUE; Session altered. SQL> Session altered. SQL>
Step-7: Now Upgrade database timezone as follows.
SQL> VAR numfail number BEGIN DBMS_DST.UPGRADE_DATABASE(:numfail, parallel => TRUE, log_errors => TRUE, log_errors_table => 'SYS.DST$ERROR_TABLE', log_triggers_table => 'SYS.DST$TRIGGER_TABLE', error_on_overlap_time => FALSE, error_on_nonexisting_time => FALSE); DBMS_OUTPUT.PUT_LINE('Failures:'|| :numfail); SQL> END; / 2 3 4 5 6 7 8 9 10 11 PL/SQL procedure successfully completed. SQL> SQL> SQL> SQL> SELECT * FROM sys.dst$error_table; no rows selected
Step-8: Now end timezone upgrade as follows.
SQL> VAR fail number BEGIN DBMS_DST.END_UPGRADE(:fail); DBMS_OUTPUT.PUT_LINE('Failures:'|| :fail); END;SQL> 2 3 4 5 / PL/SQL procedure successfully completed.
Step-9: Check timezone file and parameters as follows.
SQL> SELECT * FROM v$timezone_file; FILENAME VERSION CON_ID -------------------- ---------- ---------- timezlrg_26.dat 26 0 SQL> SQL> SQL> SQL> SELECT PROPERTY_NAME, SUBSTR(property_value, 1, 30) value FROM DATABASE_PROPERTIES WHERE PROPERTY_NAME LIKE 'DST_%' ORDER BY PROPERTY_NAME; 2 3 4 PROPERTY_NAME VALUE -------------------------------------------------------------------------------------------------------------------------------- ------------------------------ DST_PRIMARY_TT_VERSION 26 DST_SECONDARY_TT_VERSION 0 DST_UPGRADE_STATE NONE SQL> SQL> SQL> SELECT VERSION FROM v$timezone_file; VERSION ---------- 26
Step-10: Check timezone version from database, it is not updated. You need to update it as follows.
SQL> select TZ_VERSION from registry$database; TZ_VERSION ---------- 14 SQL> update registry$database set TZ_VERSION = (select version FROM v$timezone_file); commit; 2 3 1 row updated. SQL> Commit complete. SQL>
Step-11: Now check it, Timezone version has been 26.
SQL> select TZ_VERSION from registry$database; TZ_VERSION ---------- 26
Do you want to learn Oracle Database for Beginners, then read the following articles.
https://ittutorial.org/oracle-database-19c-tutorials-for-beginners/