Posts Tagged ‘oracle dba immam’

ORA-48913 Writing into trace file failed, file size limit 10485760 reached

October 1st, 2019, posted in Oracle EBS Application, Oracle Queries
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ORA-48913: Writing into trace file failed, file size limit [10485760] reached

ERROR:-
Non critical error ORA-48913 caught while writing to trace file
"/apps/PROD/db/diag/rdbms/prod/PROD/trace/PROD_dbrm_6874.trc"
Error message: ORA-48913: Writing into trace file failed, file size limit [10485760] reached.

In some environments DBAs limit the size of trace files generated by the database. This included all trace files that could get generated under USER_DUMP_DEST/DIAGNOSTIC_DEST). The parameter to set the limit for trace files is MAX_DUMP_FILE_SIZE and its value is in OS number of blocks. After setting this value, if any trace file size would increase form the size specified in this parameter, ORA-48913 would be recorded in alert log file.

 

Cause : 

The reason was Parameter MAX_DUMP_FILE_SIZE is set too low.

Solution :

We can increase the setting for the parameter MAX_DUMP_FILE_SIZE or set it to unlimited
MAX_DUMP_FILE_SIZE specifies the maximum size of trace files (excluding the alert file). Change this limit if you are concerned that trace files may use too much space.
A numerical value for MAX_DUMP_FILE_SIZE specifies the maximum size in operating system blocks.
A number followed by a K or M suffix specifies the file size in kilobytes or megabytes.
The special value string UNLIMITED means that there is no upper limit on trace file size. Thus, dump files can be as large as the operating system permits.


SQL> show parameter max_dump_file

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
max_dump_file_size string 20000


SQL> alter system set max_dump_file_size=UNLIMITED scope=both;

System altered.


SQL> show parameter max_dump_file

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
max_dump_file_size string UNLIMITED

 

OR

 

SQL> show parameter dump_file

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
max_dump_file_size string 20480

SQL> select max(lebsz) from x$kccle;

MAX(LEBSZ)
----------
512

SQL> alter session set max_dump_file_size=’1024M’;

Session altered.

SQL> show parameter max_dump_file_size

NAME TYPE VALUE
———————————— ———– ———–
max_dump_file_size string 1024M
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Renaming Data Files in 11g database

September 22nd, 2019, posted in Oracle Queries
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Renaming datafile (.dbf) rename in 11g

 

Rename Datafiles in Single Tablespace (Database Open Mode) :

Caution : Backup your tablespace Before you will do some change in your tablespace.

Please find below steps to rename datafile.

We can use the alter tablespace rename datafile command,
but the tablespace most be offline and you must re-name at OS level command the data file while the tablespace is offline:

Step: 1

[ora@oracle ~]$ sqlplus / as sysdba

SQL> ALTER TABLESPACE SYSAUX OFFLINE NORMAL;
Tablespace altered.

SQL> !



Step: 2

Rename undo07.dbf to sysaux08.dbf

[ora@oracle ~]$ cd /u01/db/apps_st/data/

[ora@oracle data]$ ls -lrt|grep undo07.dbf
-rw-r----- 1 oraqa dba 3221233664 Aug 9 11:32 undo07.dbf

[ora@oracle data]$ chmod 755 undo07.dbf

[ora@oracle data]$ mv undo07.dbf sysaux08.dbf

[ora@oracle data]$ ls -lrt|grep undo07.dbf

[ora@oracle data]$ ls -lrt|grep sysaux08.dbf
-rwxr-xr-x 1 oraqa dba 3221233664 Aug 9 11:32 sysaux08.dbf


Step: 3

[ora@oracle data]$ sqlplus / as sysdba

SQL> ALTER TABLESPACE SYSAUX RENAME DATAFILE '/u01/db/apps_st/data/undo07.dbf' to '/u01/db/apps_st/data/sysaux08.dbf';

Tablespace altered.



Step: 4

SQL> ALTER TABLESPACE SYSAUX ONLINE;

Tablespace altered.


Steps: 5

Verify tablespace status.

SQL> SELECT status
FROM dba_tablespaces
WHERE tablespace_name = 'SYSAUX';

STATUS
---------
ONLINE

Verify datafile name.

SQL> select TABLESPACE_NAME,FILE_NAME from dba_data_files where TABLESPACE_NAME = 'SYSAUX';

TABLESPACE_NAME-------------FILE_NAME
--------------------------------------------------------------------------------
SYSAUX /u01/db/apps_st/data/sysaux08.dbf

 

Rename datafile undo07.dbf to sysaux08.dbf completed.

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