How to check if standby db works

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  Hi all

  31%

  AIX

  We have dataguard configured on our prod primary and physical standby database.

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  ===========================

  Oracle@prodsvr:/Home/Oracle > dgmgrl

  DGMGRL for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - 64 bit Production

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  Valerie Debonair wrote:

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  SQL> DROP TABLE T1
    2  /
  
  Table dropped.
  
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    2                  C CLOB
    3                 )
    4    LOB(C) STORE AS SECUREFILE
    5  /
  
  Table created.
  
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    3    WHERE TABLE_NAME = 'T1'
    4      AND COLUMN_NAME = 'C'
    5  /
  
  SEGMENT_NAME
  ------------------------------
  SYS_LOB0000077372C00001$$
  
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    4      FROM  DUAL
    5  /
  
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    2  /
  
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  SQL> SELECT  BYTES
    2    FROM  USER_SEGMENTS
    3    WHERE SEGMENT_NAME = 'SYS_LOB0000077372C00001$$'
    4  /
  
       BYTES
  ----------
     1245184
  
  SQL> INSERT
    2    INTO T1
    3    SELECT  LPAD('A',10000,'A')
    4      FROM  DUAL
    5      CONNECT BY LEVEL <= 100
    6  /
  
  100 rows created.
  
  SQL> COMMIT
    2  /
  
  Commit complete.
  
  SQL> SELECT  BYTES
    2    FROM  USER_SEGMENTS
    3    WHERE SEGMENT_NAME = 'SYS_LOB0000077372C00001$$'
    4  /
  
       BYTES
  ----------
     2293760
  
  SQL> DROP TABLE T1
    2  /
  
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  SQL> CREATE TABLE t1(
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    3                 )
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    5                               DEDUPLICATE
    6                              )
    7  /
  
  Table created.
  
  SQL> SELECT  SEGMENT_NAME
    2    FROM  USER_LOBS
    3    WHERE TABLE_NAME = 'T1'
    4      AND COLUMN_NAME = 'C'
    5  /
  
  SEGMENT_NAME
  ------------------------------
  SYS_LOB0000077375C00001$$
  
  SQL> INSERT
    2    INTO T1
    3    SELECT  LPAD('A',10000,'A')
    4      FROM  DUAL
    5  /
  
  1 row created.
  
  SQL> COMMIT
    2  /
  
  Commit complete.
  
  SQL> SELECT  BYTES
    2    FROM  USER_SEGMENTS
    3    WHERE SEGMENT_NAME = 'SYS_LOB0000077375C00001$$'
    4  /
  
       BYTES
  ----------
     1179648
  
  SQL> INSERT
    2    INTO T1
    3    SELECT  LPAD('A',10000,'A')
    4      FROM  DUAL
    5      CONNECT BY LEVEL <= 100
    6  /
  
  100 rows created.
  
  SQL> COMMIT
    2  /
  
  Commit complete.
  
  SQL> SELECT  BYTES
    2    FROM  USER_SEGMENTS
    3    WHERE SEGMENT_NAME = 'SYS_LOB0000077375C00001$$'
    4  /
  
       BYTES
  ----------
     1179648
  
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  SY.

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  Thank you

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• How to check the database pending?

  Hello

  How to check if standby DB is used in Oracle 8.1.7.2.0? I just want to know the initialization parameters that must be defined for the destinations journal archive.

  OS - AIX 3 4

  Cordially,

  Bala

  Don't know if you are interested, but this seems to be the list:

  http://docs.Oracle.com/CD/A87860_01/doc/server.817/a76995/standby.htm#31537

  Best regards

  mseberg

• How standby database works

  Hello!!

  I created the database (testcat) pending for the primary database (test) using the command RMAN duplicate on the same server (windows XP) on Oracle 11.2. I know how to create the standby database but I don't know how and when Eve database works. I checked the file init.ora backup of database that contains all parameters prefixed to *. as follows

  * .db_create_file_dest = "F:\app\Administrator\oradata".

  * .db_domain = "

  * .db_recovery_file_dest = "F:\app\Administrator\flash_recovery_area".

  * .db_recovery_file_dest_size = 10737418240

  * .db_unique_name = "testcat".

  *. Db_name = 'test '.

  * .control_files = 'D:\APP\ORACLE\ORADATA\TESTCAT\CONTROLFILE\CONTROL_STAND1. CTL "

  While the primary database init.ora file contains entries like

  db_create_file_dest = F:\app\Administrator\oradata

  db_recovery_file_dest = F:\app\Administrator\flash_recovery_area

  db_recovery_file_dest_size = 4039114752

  control_files = 'F:\APP\ADMINISTRATOR\ORADATA\TEST\CONTROLFILE\O1_MF_8TXW6QN0_. CTL.

  So I want to know is

  1. What IS the difference between the settings that start with. * and start without. *

  2. can I set db_create_file_dest parameter in init.ora backup of database to another location.

  3. how to make journal apply to the standby database when I run ALTER DATABASE RECOVER... command

  4. where log files archived on eve of the databases will be stored?

  Hello

  You mean there are two types of transport for recovery logs.

  ((1) ASYNC 2) SYNC.

  1. If the transport type is ASYNC what background process will perform redo transport?

  LNS background process

  2. If the transport type is SYNC then what background process will perform redo transport?

  If version<11.2.0.3 then="" lns="" ,="" else="">

  3. is there a difference between ASYNC and SYNC?

  SYNC required for the Protection of Max and MAX availability Modes, ASYNC held a Max performance.

  4. According to your first post, RFS receives (which exist in standby mode) repeat primary and MRP applies it again then what is the role of SRL, LGWR - LNS, GAP?

  SRL required for demand in time real process and Max Protection and availability modes Max.

  When the GAP occurs, not transported logs archived corrupted or deleted on the side of priamry.

  Concerning

  Mr. Mahir Quluzade

  p.s. Please read: Data Guard - content

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  Hello

  I suggest you to generate system health report to check if the system is working properly. To run the system health report, follow the steps below.

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