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TAC-TAC Offline Backup (Cold Backup) Procedure

Document Type | Technical Information

Category | Backup/Recovery

Applicable Product Versions | 7FS02, 7FS02PS

Document Number | TBATI012

 

Overview

This document describes the Offline Backup (Cold Backup) procedure to safely back up files stored in TAS (Tibero Active Storage) to a local disk using the tbascmd command after properly shutting down the Tibero database.
 
 

Method

1. Check Backup Target Files
Check the tablespaces assigned to the data files.
SQL> col FILE_NAME for a40 
SQL> col TABLESPACE_NAME for a10 
SQL> select FILE_NAME,FILE_ID,TABLESPACE_NAME,STATUS from dba_datafiles;

Check the location of data files.
SQL> select name from v$datafile; 

NAME 
------------------------------------------
+DS0/tac/system01/system01.dbf 
+DS0/tac/system01/undo0_01.dbf 
+DS0/tac/system01/usr01.dbf 
+DS0/tac/system01/tpr01.dbf 
+DS0/tac/system02/undo1_01.dbf 
+DS0/tac/system01/xwiki01.dbf
 
Check the redo log files.
SQL> SELECT MEMBER FROM V$LOGFILE; 

MEMBER
----------------------------------------------
/tbdata/tibero/system01/redo_01a.redo 
/tbdata/tibero/system02/redo_01b.redo 
/tbdata/tibero/system01/redo_02a.redo 
/tbdata/tibero/system02/redo_02b.redo 
/tbdata/tibero/system01/redo_03a.redo 
/tbdata/tibero/system02/redo_03b.redo

2. Control File Backup
Back up the Control File as an SQL Script.
SQL> alter database backup controlfile to trace as '{backup path}/control.sql' reuse noresetlogs; 
SQL> alter database backup controlfile to trace as '{backup path}/control.sql' reuse resetlogs

3. Stop DB Startup
Stop the Tibero Database. (Keep TAS running)
$ tbdown immediate

 

4. Copy Backup Files
  • Connect to TAS using the tbascmd command and copy backup files to the local disk.
  • The tbascmd command is used to connect to the TAS instance and manage files stored in the disk space.
$ tbascmd {TAS PORT} 
[15:30]ASCMD +> cd +DS0/tac/system01 
[15:31]ASCMD +DS0/tac/system01> ls 
redo0_11.redo 
redo0_21.redo 
system01.dbf 
undo0_01.dbf 
tmp01.dbf 
usr01.dbf 
tpr01.dbf 
redo1_11.redo 
redo1_21.redo 
xwiki01.dbf - Number of files found: 10 

-- Use the cptolocal command to copy TAS files to local
[16:17]ASCMD +DS0/tac> cptolocal .passwd /home/tibero/backup 
22 
[15:32]ASCMD +DS0/tac/system01> cptolocal +DS0/tac/system01/.dbf /home/tibero/back/ 
[15:32]ASCMD +DS0/tac/system01> cptolocal +DS0/tac/system01/.dbf /home/tibero/back/ 
[16:07]ASCMD +DS0/tac/system02> cptolocal +DS0/tac/system02/*.dbf /home/tibero/back/ 
[16:10]ASCMD +DS0/tac/system02> exit

5. Start DB
Start the Tibero DB after backup is complete.
$ tbboot


6. Verify Backup

$ ll 
total 12800044 
-rw-r--r-- 1 tibero dba       4528 May 27 10:45 control.sql 
-rw-r--r-- 1 tibero dba 3145728000 May 27 10:49 system01.dbf 
-rw-r--r-- 1 tibero dba 3145728000 May 27 10:50 tmp01.dbf 
-rw-r--r-- 1 tibero dba 1048576000 May 27 10:49 tpr01.dbf 
-rw-r--r-- 1 tibero dba 1048576000 May 27 10:48 undo0_01.dbf 
-rw-r--r-- 1 tibero dba 3145728000 May 27 10:52 undo1_01.dbf 
-rw-r--r-- 1 tibero dba 1048576000 May 27 10:49 usr01.dbf 
-rw-r--r-- 1 tibero dba  524288000 May 27 10:51 xwiki01.dbf

Note

Before performing an offline backup (cold backup), it is essential to ensure that the database has been properly shut down.

 

 

 

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