DG - dataguard trouble shooting的相关视图

•V$DATAGUARD_STATS：显示dataguard统计信息

备库
SQL> select * from v$dataguard_stats;

NAME                             VALUE                     UNIT                           TIME_COMPUTED                  DATUM_TIME
-------------------------------- ------------------------- ------------------------------ ------------------------------ ------------------------------
transport lag                    +00 00:00:00              day(2) to second(0) interval   04/17/2016 06:35:53            04/17/2016 06:35:52
apply lag                        +00 00:00:00              day(2) to second(0) interval   04/17/2016 06:35:53            04/17/2016 06:35:52
apply finish time                                          day(2) to second(3) interval   04/17/2016 06:35:53
estimated startup time           18                        second                         04/17/2016 06:35:53

SQL>

•v$managed_standby：显示physical standby数据库后台进程的当前状态

主库
SQL> select * from v$managed_standby ;

PROCESS          PID STATUS         CLIENT_PROCESS   CLIENT_PID   CLIENT_DBID      GROUP#       RESETLOG_ID    THREAD#  SEQUENCE#     BLOCK#     BLOCKS DELAY_MINS KNOWN_AGENTS ACTIVE_AGENTS
--------- ---------- -------------- ---------------- ------------ ---------------- ------------ ----------- ---------- ---------- ---------- ---------- ---------- ------------ -------------
ARCH            2912 CLOSING        ARCH             2912         1390893779       1              863113045          1       7032      63488        606          0            0             0
ARCH            2916 CONNECTED      ARCH             2916         1390893779       N/A                    0          0          0          0          0          0            0             0
ARCH            2920 CLOSING        ARCH             2920         1390893779       2              863113045          1       7033      53248       1229          0            0             0
ARCH            2924 CLOSING        ARCH             2924         1390893779       3              863113045          1       7031      61440         69          0            0             0
LNS             2928 WRITING        LNS              2928         1390893779       3              863113045          1       7034      29477          1          0            0             0

SQL>

备库
SQL> select * from v$managed_standby ;

PROCESS         PID STATUS          CLIENT_PROCESS   CLIENT_PID CLIENT_DBID       GROUP#      RESETLOG_ID    THREAD#  SEQUENCE#     BLOCK#     BLOCKS DELAY_MINS KNOWN_AGENTS ACTIVE_AGENTS
--------- --------- --------------- ---------------- ---------- ----------------- ----------- ----------- ---------- ---------- ---------- ---------- ---------- ------------ -------------
ARCH           3044 CLOSING         ARCH             3044       1390893779        6             863113045          1       7030      79872         63          0            0             0
ARCH           2612 CLOSING         ARCH             2612       1390893779        6             863113045          1       7031      61440         69          0            0             0
ARCH           1348 CONNECTED       ARCH             1348       1390893779        N/A                   0          0          0          0          0          0            0             0
ARCH           2736 CLOSING         ARCH             2736       1390893779        7             863113045          1       7032      63488        606          0            0             0
ARCH            816 CLOSING         ARCH             816        1390893779        6             863113045          1       7033      53248       1229          0            0             0
RFS             680 IDLE            UNKNOWN          2916       1390893779        N/A                   0          0          0          0          0          0            0             0
RFS            1620 IDLE            UNKNOWN          2924       1390893779        N/A                   0          0          0          0          0          0            0             0
MRP0            800 WAIT_FOR_LOG    N/A              N/A        N/A               N/A           863113045          1       7034          0          0          0            9             9
RFS             484 IDLE            LGWR             2928       1390893779        3             863113045          1       7034      29050          1          0            0             0
RFS             900 IDLE            UNKNOWN          2912       1390893779        N/A                   0          0          0          0          0          0            0             0

已选择10行。

SQL>

•v$standby_apply_snapshot：显示当前应用重做数据的速度

SQL> select to_char(snapshot_time,'dd-mon-rr hh24:mi:ss') snapshot_time, thread#, sequence#, applied_scn,apply_rate from V$standby_apply_snapshot;

SNAPSHOT_TIME 		  THREAD#   SEQUENCE#   APPLIED_SCN     APPLY_RATE
--------------------- --------- ----------- --------------- ----------
15-05-08 15:45:08     1 		31527 		3273334169433 	68234
15-05-08 15:45:08     2 		23346 		3273334169449 	68234

SQL>

•v$recovery_progress：跟踪database recovery操作，并评估当前完成当前正在执行的操作所需的时间

SQL> select * from V$RECOVERY_PROGRESS;

START_TIM TYPE                      ITEM                             UNITS                     SOFAR      TOTAL TIMESTAMP COMMENTS
--------- ------------------------- -------------------------------- -------------------- ---------- ---------- --------- ------------------------------
17-APR-16 Media Recovery            Log Files                        Files                         2          0
17-APR-16 Media Recovery            Active Apply Rate                KB/sec                        0          0
17-APR-16 Media Recovery            Average Apply Rate               KB/sec                        3          0
17-APR-16 Media Recovery            Maximum Apply Rate               KB/sec                        0          0
17-APR-16 Media Recovery            Redo Applied                     Megabytes                    13          0
17-APR-16 Media Recovery            Last Applied Redo                SCN+Time                      0          0 17-APR-16 SCN: 1036677
17-APR-16 Media Recovery            Active Time                      Seconds                      13          0
17-APR-16 Media Recovery            Apply Time per Log               Seconds                       0          0
17-APR-16 Media Recovery            Checkpoint Time per Log          Seconds                       0          0
17-APR-16 Media Recovery            Elapsed Time                     Seconds                    3656          0

10 rows selected.

SQL>

•v$log_history：显示log history，该信息来自控制文件

•v$archived_gap：显示备库的archive gaps信息

•v$asm_diskgroup

•v$database

•v$archive_dest