How to Manually Determining and Resolving Archive Gaps in ASM (Copy archivelog in ASM using RMAN) [I

How to Manually Determining and Resolving Archive Gaps in ASM (Copy archivelog in ASM using RMAN) [ID 1271114.1]

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 修改时间 04-JAN-2012    类型 HOWTO     状态 MODERATED 

In this Document
  Goal
  Solution

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Applies to:

Oracle Server - Enterprise Edition - Version: 10.2.0.1 to 11.2.0.1 - Release: 10.2 to 11.2
Information in this document applies to any platform.

Goal

The note describes how to find a GAP and resolve it in case of ASM on both primary and standby or ASM on either primary or standby.

Solution

1. Check for the GAP,

On standby,

SQL>SELECT THREAD#, LOW_SEQUENCE#, HIGH_SEQUENCE# FROM V$ARCHIVE_GAP;

2. On primary Check the location where the missing logfiles exist.

SELECT NAME FROM V$ARCHIVED_LOG WHERE THREAD#=<n> AND DEST_ID=<n> AND SEQUENCE# BETWEEN <LOW_SEQUENCE#> AND <HIGH_SEQUENCE#>;


For example,

SQL> SELECT * FROM V$ARCHIVE_GAP;

THREAD# LOW_SEQUENCE# HIGH_SEQUENCE#
----------- ------------- --------------
1 1113 1115


SQL> SELECT NAME FROM V$ARCHIVED_LOG WHERE THREAD#=1 AND DEST_ID=1 AND SEQUENCE# BETWEEN 1113 AND 1115;

NAME
--------------------------------------------------------------------------------
+DGROUP2/PROD/datafile/ARC00001113_0732997804.001
+DGROUP2/PROD/datafile/ARC00001114_0732997804.001
+DGROUP2/PROD/datafile/ARC00001115_0732997804.001

3. Use RMAN to copy to someother local filesystem.

RMAN>copy archivelog '+DGROUP2/PROD/datafile/ARC00001113_0732997804.001' to '/u01/app/oracle/ARC00001113_0732997804.001';

Do the same for all the logs.

4. SCP to standby.

scp /u01/app/oracle/ARC00001113_0732997804.001 drs1.idc.oracle.com:/u04/standby/

5. Register manually by mentioning the copied file location.

On standby,

SQL>alter database register logfile '/u01/app/oracle/ARC00001113_0732997804.001';

NOTE : Alternatively we can copy this archive log to standby ASM location and then do a register.

On standby,

$rman target /

RMAN>copy archivelog '/u01/app/oracle/ARC00001113_0732997804.001' to '+DGROUP2/STDBY/datafile/ARC00001113_0732997804.001';


Now register,

SQL>alter database register logfile '+DGROUP2/STDBY/datafile/ARC00001113_0732997804.001';