Oracle commonly used command two: ASM disk group expansion

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Problem Description

The CRM system is abnormal and cannot be accessed, and the system reports the following warning errors:

java.sql.SQLException: ORA-00257: archiver error. Connect internal only, until freed.

problem analysis

The 400GB of database archive log space is suddenly full, and the archive logs are stored in the ASM DataGroup disk group.
Since business has stalled and must be restored immediately, the sudden growth of archive logs can only be analyzed later. At this stage, it is necessary to expand the capacity and continue to save the log.

problem solved

Storage increase disk sdm
ASM label production identification
Set asm_diskstring parameter
Expansion of ASM Disk Group

Additional information

Query archive generation time and quantity

select logtime,
count(*),
round(sum(blocks * block_size) / 1024 / 1024) mbsize
from (select trunc(first_time, 'dd') as logtime, a.BLOCKS, a.BLOCK_SIZE
from gv$archived_log a
where a.DEST_ID = 1
and a.FIRST_TIME > trunc(sysdate - 7))
group by logtime
order by logtime desc;

Logminer log analysis

PROMPT 
PROMPT +------------------------------------------------------------------------+
PROMPT | Author:Eric.zhong([email protected])                                |
PROMPT | Date:20160703                                                          |
PROMPT | Desc:Easy to analyze oracle log.                                       |
PROMPT +------------------------------------------------------------------------+

set lines 256
set pages 2000
col member format a50
col name format a50
col username for a10
col seg_owner for a10
col sql_redo for a70
col sql_undo for a70
col seg_name for a50
alter session set nls_date_format = "yyyy-mm-dd HH24:MI:SS";

PROMPT 
PROMPT +------------------------------------------------------------------------+
PROMPT | Select Analyze LogFile                                                 |
PROMPT +------------------------------------------------------------------------+

select a.group#,a.sequence#,a.members,a.archived,a.status,b.member from v$log a,v$logfile b where a.group#=b.group#;

select name,completion_time from v$archived_log where deleted='NO' and dest_id='1';

execute dbms_logmnr.add_logfile(logfilename=>'&REDOLOG' ,options=>dbms_logmnr.new);

execute dbms_logmnr.start_logmnr(options=>dbms_logmnr.dict_from_online_catalog + dbms_logmnr.PRINT_PRETTY_SQL);

PROMPT 
PROMPT +------------------------------------------------------------------------+
PROMPT | Display Time Interval at Analyze LogFile                               |
PROMPT +------------------------------------------------------------------------+

SELECT FILENAME AS name, LOW_TIME, HIGH_TIME FROM V$LOGMNR_LOGS;

select seg_owner,operation,count(*) from v$logmnr_contents group by seg_owner,operation order by seg_owner;

SELECT * FROM (
	SELECT SEG_OWNER, SEG_NAME, OPERATION, COUNT(*) AS Hits 
	FROM V$LOGMNR_CONTENTS WHERE SEG_NAME NOT LIKE '%$' 
		GROUP BY SEG_OWNER, SEG_NAME, OPERATION 
		ORDER BY Hits DESC) TMP 
WHERE ROWNUM < 21;

PROMPT  Display Operation SQLTEXT
PROMPT select username,seg_owner,scn,to_char(timestamp,'yyyy-mm-dd hh24:mi:mm') time,sql_redo from v$logmnr_contents where seg_owner='SEGOWNER' and operation='OPER';



PROMPT 
PROMPT +------------------------------------------------------------------------+
PROMPT | End Command : execute dbms_logmnr.end_logmnr();                        |
PROMPT +------------------------------------------------------------------------+