聯機執行SQL語句進行數據備份的高級特性分析

這篇文章主要講解了“聯機執行SQL語句進行數據備份的高級特性分析”，文中的講解內容簡單清晰，易于學習與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學習“聯機執行SQL語句進行數據備份的高級特性分析”吧！

1.加密備份
DM7提供加密備份的方式保護用戶的備份集，沒有權限的用戶無法訪問加密的備份集。備份語句中通過指定IDENTIFIED BY...WITH ENCRYPTION...ENCRYPT WITH...執行加密備份。其中，參數IDENTIFIED BY指定加密密碼，長度不超過128字節，若長度超長服務器會報語法分析出錯；參數WITH ENCRYPTION指定加密類型，加密類型分為簡單加密和復雜加密，簡單加密是對備份文件設置口令，但文件內容仍以明文存儲，復雜加密則對備份文件進行完全的加密，備份文件以密文方式存儲，用戶可根據備份數據的重要程度選擇加密類型；參數ENCRYPT WITH指定加密算法，不同加密算法具體見參數說明，也可通過“SELECT * FROM V$CIPHERS”語句查詢DM7支持的加密算法，其中算法MD5和SHA1不能在此處使用。默認使用的加密算法為AES256_CFB。

加密備份過程中參數IDENTIFIED BY必須指定，參數WITH ENCRYPTION和參數ENCRYPT WITH可不指定，此時WITH ENCRYPTION默認值為1，ENCRYPT WITH默認值為AES256_CFB。例如，以下兩種加密備份語句都是合法的：

SQL> backup database to db_rac_backup_encrypt_01 backupset '/dm7/backup/db_rac_backup_encrypt_2020052901' identified by "abcd123456";
executed successfully
used time: 00:00:01.379. Execute id is 85.
SQL> backup database to db_rac_backup_encrypt_02 backupset '/dm7/backup/db_rac_backup_encrypt_2020052902' identified by "abcd123456" encrypt with rc4;
executed successfully
used time: 00:00:01.313. Execute id is 86.
SQL> select sf_bakset_backup_dir_add('disk','/dm7/backup/db_rac_backup_encrypt_2020052901');
LINEID     SF_BAKSET_BACKUP_DIR_ADD('disk','/dm7/backup/db_rac_backup_encrypt_2020052901')
---------- -------------------------------------------------------------------------------
1          1
used time: 2.066(ms). Execute id is 87.
SQL> select sf_bakset_backup_dir_add('disk','/dm7/backup/db_rac_backup_encrypt_2020052902');
LINEID     SF_BAKSET_BACKUP_DIR_ADD('disk','/dm7/backup/db_rac_backup_encrypt_2020052902')
---------- -------------------------------------------------------------------------------
1          1
used time: 1.532(ms). Execute id is 88.
SQL> select * from v$backupset where backup_path like '/dm7/backup/db_rac_backup_encrypt_202005290%';
LINEID     DEVICE_TYPE BACKUP_ID   PARENT_ID   BACKUP_NAME              BACKUP_PATH                                  TYPE        LEVEL       RANGE#      OBJECT_NAME OBJECT_ID   BASE_NAME BACKUP_TIME                 DESC# ENCRYPT_TYPE COMPRESS_LEVEL WITHOUT_LOG USE_PWR     PKG_SIZE    BEGIN_LSN            END_LSN              BKP_NUM     DBF_NUM     PARALLEL_NUM DDL_CLONE   MPP_FLAG    MIN_TRX_START_LSN    MIN_EXEC_VER CUMULATIVE
---------- ----------- ----------- ----------- ------------------------ -------------------------------------------- ----------- ----------- ----------- ----------- ----------- --------- --------------------------- ----- ------------ -------------- ----------- ----------- ----------- -------------------- -------------------- ----------- ----------- ------------ ----------- ----------- -------------------- ------------ -----------
1          DISK        1180634048  -1          DB_RAC_BACKUP_ENCRYPT_01 /dm7/backup/db_rac_backup_encrypt_2020052901 0           0           1           rac         -1                    2020-05-29 16:41:40.000665        1            0              0           0           33554432    50908                51058                2           4           1            0           0           49398                117507596    0
2          DISK        244985784   -1          DB_RAC_BACKUP_ENCRYPT_02 /dm7/backup/db_rac_backup_encrypt_2020052902 0           0           1           rac         -1                    2020-05-29 16:43:00.000380        1            0              0           0           33554432    50908                51064                2           4           1            0           0           49398                117507596    0
used time: 00:00:01.053. Execute id is 89.

若指定了加密密碼，但加密類型WITH ENCRYPTION參數指定為0，則為非加密備份，如下所示：

SQL> backup database to db_rac_backup_encrypt_03 backupset '/dm7/backup/db_rac_backup_encrypt_2020052903' identified by "abcd123456" with encryption 0;
executed successfully
used time: 00:00:01.313. Execute id is 90.
SQL> select sf_bakset_backup_dir_add('disk','/dm7/backup/db_rac_backup_encrypt_2020052903');
LINEID     SF_BAKSET_BACKUP_DIR_ADD('disk','/dm7/backup/db_rac_backup_encrypt_2020052903')
---------- -------------------------------------------------------------------------------
1          1
used time: 1.899(ms). Execute id is 91.
SQL> select * from v$backupset where backup_path like '/dm7/backup/db_rac_backup_encrypt_202005290%';
LINEID     DEVICE_TYPE BACKUP_ID   PARENT_ID   BACKUP_NAME              BACKUP_PATH                                  TYPE        LEVEL       RANGE#      OBJECT_NAME OBJECT_ID   BASE_NAME BACKUP_TIME                 DESC# ENCRYPT_TYPE COMPRESS_LEVEL WITHOUT_LOG USE_PWR     PKG_SIZE    BEGIN_LSN            END_LSN              BKP_NUM     DBF_NUM     PARALLEL_NUM DDL_CLONE   MPP_FLAG    MIN_TRX_START_LSN    MIN_EXEC_VER CUMULATIVE
---------- ----------- ----------- ----------- ------------------------ -------------------------------------------- ----------- ----------- ----------- ----------- ----------- --------- --------------------------- ----- ------------ -------------- ----------- ----------- ----------- -------------------- -------------------- ----------- ----------- ------------ ----------- ----------- -------------------- ------------ -----------
1          DISK        1180634048  -1          DB_RAC_BACKUP_ENCRYPT_01 /dm7/backup/db_rac_backup_encrypt_2020052901 0           0           1           rac         -1                    2020-05-29 16:41:40.000665        1            0              0           0           33554432    50908                51058                2           4           1            0           0           49398                117507596    0
2          DISK        244985784   -1          DB_RAC_BACKUP_ENCRYPT_02 /dm7/backup/db_rac_backup_encrypt_2020052902 0           0           1           rac         -1                    2020-05-29 16:43:00.000380        1            0              0           0           33554432    50908                51064                2           4           1            0           0           49398                117507596    0
3          DISK        1995527143  -1          DB_RAC_BACKUP_ENCRYPT_03 /dm7/backup/db_rac_backup_encrypt_2020052903 0           0           1           rac         -1                    2020-05-29 16:46:17.000633        0            0              0           0           33554432    50908                51070                2           4           1            0           0           49398                117507596    0
used time: 00:00:01.069. Execute id is 92.

從encrypt_type列可以看到備份集/dm7/backup/db_rac_backup_encrypt_2020052903為0，也就證明了備份是沒有加密的。

下面以數據庫完全備份為例，創建加密密碼為“abcd123456”，加密算法為“rc4”的復雜類型數據庫加密備份，完整步驟如下：
1) 配置歸檔 。
2) 保證數據庫處于OPEN狀態。
3) 備份數據庫，輸入以下語句：

SQL> backup database to db_rac_backup_encrypt_04 backupset '/dm7/backup/db_rac_backup_encrypt_2020052904' identified by "abcd123456" with encryption 2 encrypt with rc4;
executed successfully
used time: 00:00:01.356. Execute id is 93.
SQL> select sf_bakset_backup_dir_add('disk','/dm7/backup/db_rac_backup_encrypt_2020052904');
LINEID     SF_BAKSET_BACKUP_DIR_ADD('disk','/dm7/backup/db_rac_backup_encrypt_2020052904')
---------- -------------------------------------------------------------------------------
1          1
used time: 1.868(ms). Execute id is 94.
SQL> select * from v$backupset where backup_path='/dm7/backup/db_rac_backup_encrypt_2020052904';
LINEID     DEVICE_TYPE BACKUP_ID   PARENT_ID   BACKUP_NAME              BACKUP_PATH                                  TYPE        LEVEL       RANGE#      OBJECT_NAME OBJECT_ID   BASE_NAME BACKUP_TIME                 DESC# ENCRYPT_TYPE COMPRESS_LEVEL WITHOUT_LOG USE_PWR     PKG_SIZE    BEGIN_LSN            END_LSN              BKP_NUM     DBF_NUM     PARALLEL_NUM DDL_CLONE   MPP_FLAG    MIN_TRX_START_LSN    MIN_EXEC_VER CUMULATIVE
---------- ----------- ----------- ----------- ------------------------ -------------------------------------------- ----------- ----------- ----------- ----------- ----------- --------- --------------------------- ----- ------------ -------------- ----------- ----------- ----------- -------------------- -------------------- ----------- ----------- ------------ ----------- ----------- -------------------- ------------ -----------
1          DISK        141217020   -1          DB_RAC_BACKUP_ENCRYPT_04 /dm7/backup/db_rac_backup_encrypt_2020052904 0           0           1           rac         -1                    2020-05-29 16:49:56.000930        2            0              0           0           33554432    50908                51076                2           4           1            0           0           49398                117507596    0
used time: 00:00:01.067. Execute id is 95.

對于增量備份加密，如果基備份存在加密，則使用的加密算法和加密密碼必須與基備份中一致；如果基備份未進行加密處理，則對增量備份使用的加密密碼和算法沒有特殊要求。

SQL> backup database increment base on backupset '/dm7/backup/db_rac_backup_encrypt_2020052904' backupset '/dm7/backup/db_rac_increment_backup_encrypt_2020052901' identified by "abcd123456" with encryption 2 encrypt with rc4;
executed successfully
used time: 00:00:01.262. Execute id is 96.
SQL> select sf_bakset_backup_dir_add('disk','/dm7/backup/db_rac_increment_backup_encrypt_2020052901');
LINEID     SF_BAKSET_BACKUP_DIR_ADD('disk','/dm7/backup/db_rac_increment_backup_encrypt_2020052901')
---------- -----------------------------------------------------------------------------------------
1          1
used time: 2.210(ms). Execute id is 97.
SQL> select * from v$backupset where backup_path='/dm7/backup/db_rac_increment_backup_encrypt_2020052901';
LINEID     DEVICE_TYPE BACKUP_ID   PARENT_ID   BACKUP_NAME                        BACKUP_PATH                                            TYPE        LEVEL       RANGE#      OBJECT_NAME OBJECT_ID   BASE_NAME                BACKUP_TIME                 DESC# ENCRYPT_TYPE COMPRESS_LEVEL WITHOUT_LOG USE_PWR     PKG_SIZE    BEGIN_LSN            END_LSN              BKP_NUM     DBF_NUM     PARALLEL_NUM DDL_CLONE   MPP_FLAG    MIN_TRX_START_LSN    MIN_EXEC_VER CUMULATIVE
---------- ----------- ----------- ----------- ---------------------------------- ------------------------------------------------------ ----------- ----------- ----------- ----------- ----------- ------------------------ --------------------------- ----- ------------ -------------- ----------- ----------- ----------- -------------------- -------------------- ----------- ----------- ------------ ----------- ----------- -------------------- ------------ -----------
1          DISK        195701720   -1          DB_INCR_rac_20200529_165327_000906 /dm7/backup/db_rac_increment_backup_encrypt_2020052901 1           0           1           rac         -1          DB_RAC_BACKUP_ENCRYPT_04 2020-05-29 16:53:29.000129        2            0              0           0           33554432    50908                51082                2           4           1            0           0           49398                117507596    0
used time: 00:00:01.075. Execute id is 98.

2.設置跟蹤日志文件
DM7備份時支持設置跟蹤日志文件，日志記錄了SBT接口的調用過程，用戶通過查看日志可跟蹤備份還原過程。

與生成跟蹤日志文件相關的參數有兩個：TRACE FILE和TRACE LEVEL。TRACE FILE用于指定生成的跟蹤日志文件路徑，TRACE LEVEL表示是否啟用TRACE。TRACE LEVEL有效值包括1和2。1表示不啟用TRACE功能，2表示啟用，系統默認值為1。

指定參數TRACE FILE但TRACE LEVEL值設置為1即不啟用TRACE功能，會生成TRACE文件，但不會寫入TRACE信息。如下所示：

SQL> backup database backupset '/dm7/backup/db_rac_backup_2020052905' trace file '/dm7/backup/db_rac_trace.log' trace level 1;
executed successfully
used time: 00:00:01.719. Execute id is 99.
[dmdba@dmrac1 backup]$ cat db_rac_trace.log

TRACE LEVEL值設置為2即啟用TRACE功能，但若TRACE FILE沒有指定，系統默認在執行碼路徑的log目錄下生成DM_SBTTRACE_年月.log文件。如下所示：

SQL> backup database to db_rac_backup_trace_2020052901 backupset '/dm7/backup/db_rac_backup_trace_2020052901' trace level 2;
executed successfully
used time: 00:00:01.354. Execute id is 101.
[dmdba@dmrac1 log]$ pwd
/dm7/log
[dmdba@dmrac1 log]$ cat dm_SBTTRACE_202005.log
2020-05-29 17:01:27 sbtbackup(type=1, name=db_rac_backup_trace_2020052901.bak)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 5095936)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 21496320)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 49664)
2020-05-29 17:01:27 sbtclose()
2020-05-29 17:01:27 sbtinfo(!NULL)
file [db_rac_backup_trace_2020052901.bak] finished, name:[db_rac_backup_trace_2020052901.bak],created time:[2020-05-29 17:01:27],expirated time:[2105-12-31 23:59:59],label:[],comment:[]
2020-05-29 17:01:27 sbtbackup(type=1, name=db_rac_backup_trace_2020052901_1.bak)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:01:27 sbtclose()
2020-05-29 17:01:27 sbtinfo(!NULL)
file [db_rac_backup_trace_2020052901_1.bak] finished, name:[db_rac_backup_trace_2020052901_1.bak],created time:[2020-05-29 17:01:27],expirated time:[2105-12-31 23:59:59],label:[],comment:[]
2020-05-29 17:01:27 sbtbackup(type=3, name=db_rac_backup_trace_2020052901.meta)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 49152)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:01:27 sbtwrite(buf != NULL, buf_len = 512)
2020-05-29 17:01:27 sbtclose()
2020-05-29 17:01:27 sbtinfo(!NULL)
file [db_rac_backup_trace_2020052901.meta] finished, name:[db_rac_backup_trace_2020052901.meta],created time:[2020-05-29 17:01:27],expirated time:[2105-12-31 23:59:59],label:[],comment:[]

若TRACE FILE使用相對路徑，日志文件生成在執行碼同級目錄下。
以數據庫完全備份為例，為備份設置跟蹤日志文件的操作步驟如下:
1) 配置歸檔，參考3.1節。
2) 保證數據庫處于OPEN狀態。
3) 備份數據庫，輸入以下語句：

SQL> backup database to db_rac_backup_trace_2020052903 backupset '/dm7/backup/db_rac_backup_trace_2020052903' trace file '/dm7/backup/db_rac_trace.log' trace level 2;
executed successfully
used time: 00:00:01.321. Execute id is 104.
[dmdba@dmrac1 backup]$ cat db_rac_trace.log
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_rac_backup_trace_2020052902/db_rac_backup_trace_2020052902.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/ts_main_increment_bak_20200529_01/ts_main_increment_bak_20200529_01.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 8704)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_rac_backup_encrypt_2020052904/db_rac_backup_encrypt_2020052904.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_backup_20200528_01/db_backup_20200528_01.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_rac_backup_encrypt_2020052903/db_rac_backup_encrypt_2020052903.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_backup_20200529_01/db_backup_20200529_01.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_rac_backup_encrypt_2020052902/db_rac_backup_encrypt_2020052902.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_backup_20200528_04/db_backup_20200528_04.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_backup_20200528_02/db_backup_20200528_02.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_rac_backup_2020052905/db_rac_backup_2020052905.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_backup_20200528_06/db_backup_20200528_06.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 182272)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/ts_main_full_bak_20200529_02/ts_main_full_bak_20200529_02.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 8704)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_rac_increment_backup_encrypt_2020052901/db_rac_increment_backup_encrypt_2020052901.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/ts_main_increment_bak_20200529_02/ts_main_increment_bak_20200529_02.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 8704)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/ts_main_full_bak_20200529_01/ts_main_full_bak_20200529_01.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 8704)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_backup_20200528_05/db_backup_20200528_05.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_increment_backup_20200529_01/db_increment_backup_20200529_01.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/ts_main_increment_bak_2020052903/ts_main_increment_bak_2020052903.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 8704)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_rac_backup_encrypt_2020052901/db_rac_backup_encrypt_2020052901.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_backup_20200528_03/db_backup_20200528_03.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_increment_backup_20200529_02/db_increment_backup_20200529_02.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=/dm7/backup/db_rac_backup_trace_2020052901/db_rac_backup_trace_2020052901.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 25088)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=+DMDATA/data/rac/bak/ts_backup_main_01/ts_backup_main_01.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 8704)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=+DMDATA/data/rac/bak/tab_t1_bak_01/tab_t1_bak_01.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 5632)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtrestore(filepath=+DMDATA/data/rac/bak/table_tab_01_backup_20200529/table_tab_01_backup_20200529.meta)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 45056)
2020-05-29 17:15:13 sbtread(buf != NULL, buf_len = 5632)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtend(del_flag=FALSE)
2020-05-29 17:15:13 sbtbackup(type=1, name=db_rac_backup_trace_2020052903.bak)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 5095936)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 21496320)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 49664)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtinfo(!NULL)
file [db_rac_backup_trace_2020052903.bak] finished, name:[db_rac_backup_trace_2020052903.bak],created time:[2020-05-29 17:15:13],expirated time:[2105-12-31 23:59:59],label:[],comment:[]
2020-05-29 17:15:13 sbtbackup(type=1, name=db_rac_backup_trace_2020052903_1.bak)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 2560)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtinfo(!NULL)
file [db_rac_backup_trace_2020052903_1.bak] finished, name:[db_rac_backup_trace_2020052903_1.bak],created time:[2020-05-29 17:15:13],expirated time:[2105-12-31 23:59:59],label:[],comment:[]
2020-05-29 17:15:13 sbtbackup(type=3, name=db_rac_backup_trace_2020052903.meta)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 49152)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 4096)
2020-05-29 17:15:13 sbtwrite(buf != NULL, buf_len = 512)
2020-05-29 17:15:13 sbtclose()
2020-05-29 17:15:13 sbtinfo(!NULL)
file [db_rac_backup_trace_2020052903.meta] finished, name:[db_rac_backup_trace_2020052903.meta],created time:[2020-05-29 17:15:13],expirated time:[2105-12-31 23:59:59],label:[],comment:[]
2020-05-29 17:15:13 sbtend(del_flag=FALSE)

感謝各位的閱讀，以上就是“聯機執行SQL語句進行數據備份的高級特性分析”的內容了，經過本文的學習后，相信大家對聯機執行SQL語句進行數據備份的高級特性分析這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關知識點的文章，歡迎關注！