mysql で漢字が化ける。

/etc/mysql/my.cnf
[mysqld]
character-set-server=utf8

[mysql] 

default-character-set=utf8

/etc/init.d/mysql restart

※サーバ側は、mysql5.5以降表記が変わったらしい。

確認は、

mysql> 

show variables like 'character%';
show global variables like 'character%';

Oracle 触ってみた。

【RMANでディスクチェック】

# su - oracle

# rman target /

#  validate database check logical;

#-------------------------------------------------------

# archivelog 削除 ＆ 同期 （アーカイブログ）

#-------------------------------------------------------

# su - oracle

# rman target /

RMAN> list archivelog all;

RMAN> delete archivelog all;                    # 全削除

RMAN> crosscheck archivelog all;         ＃ 物理ディスクとの整合性（同期）

RMAN> configure channel device type disk format '/work/archivelog.backup/ar_%U';

RMAN> show all;         # 確認

RMAN configuration parameters for database with db_unique_name ARCSDBMS are:

CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default

CONFIGURE BACKUP OPTIMIZATION OFF; # default

CONFIGURE DEFAULT DEVICE TYPE TO 'SBT_TAPE';

CONFIGURE CONTROLFILE AUTOBACKUP ON;

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE SBT_TAPE TO '%F'; # default

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default

CONFIGURE DEVICE TYPE 'SBT_TAPE' PARALLELISM 1 BACKUP TYPE TO BACKUPSET;

CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT   '/work/archivelog.backup/ar_%U';

CONFIGURE MAXSETSIZE TO UNLIMITED; # default

CONFIGURE ENCRYPTION FOR DATABASE OFF; # default

CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default

CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default

CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default

CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+DATA/ARCSDBMS/snapcf_arcsdbms1.f';

RMAN> backup archivelog until sequence XXX thread=1 delete input;

※ XXXは、Seq.

RMAB> backup archivelog all delete all input;               # 全バックアップ＆削除

RMAN> list archivelog all;

using target database control file instead of recovery catalog

List of Archived Log Copies for database with db_unique_name ARCSDBMS

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

Key       Thrd Seq     S Low Time     Name:

--------- ------ ------- - -------------------------

161321  1      45331   A    21-11-24 +ARCT_M/arcsdbms/archivelog/2021_11_24/thread_1_seq_45331.297.1089496643

# su - oracle

ORACLE_BASE=/opt/app/oracle
ORACLE_HOME=/opt/app/oracle/product/11.2.0/db_1
ORACLE_SID=XXXXXXXXX

# sqlplus / as sysdba
SQL> select * from v$version; #バージョン表示
SQL> def #ユーザ情報等確認
SQL> select username,expiry_date,profile from dba_users; #ユーザ一覧
SQL> select * from all_users; #ユーザ一覧
SQL> select * from v$instance; #インスタンス表示
SQL> select * from sys.gv_$instance; #インスタンス一覧
SQL> host #OSコマンドを実行。
SQL> select username,osuser,machine,terminal,program from v$session; #session一覧
SQL> select * from product_component_version;
SQL> select * from v$option; #オプション製品Ver.
SQL> select * from v$pwfile_users; #DBA接続可能ユーザ
SQL> select * v$database; #DBID

# sqlplus ARCSXXXX/xxxxxxx@arcsdbms1
SQL> select owner, table_name from all_tables where owner='XXX'; #テーブル一覧
SQL> select column_name,data_type, data_length from user_tab_columns where owner='XXXXXXX' and table_name='CCMXXX'; #column一覧

SQL> select * from CCMXXX;

【python36でアクセス】
# vi oracle.py
#!/usr/bin/env python
import cx_Oracle
import os

HOST = '192.168.xx.xxx'
PORT = '1521'
SID = 'arcsdbms'
os.environ["NLS_LANG"] = "JAPANESE_JAPAN.JA16SJISTILDE"

tns = cx_Oracle.makedsn(HOST, PORT, SID)
conn = cx_Oracle.connect("ARCSxxxx", "XXXXXXX", tns)

print( conn.version)

cur = conn.cursor()
cur.execute("""select column_name,data_type,data_length from all_tab_columns where table_name='XXXnnn'""")
rows = cur.fetchall()

for r in rows:
   print("%s %s %s" % (r[0],r[1],r[2]))

cur.execute("""select * from XXXnnn""")
rows = cur.fetchall()
for r in rows:
   print("%s %s %s %s" % (r[0],r[1],r[2],r[3]))


【Oracle RMANの有効期限が切れた。】
# su - oracle
ORACLE_BASE=/opt/app/oracle
ORACLE_HOME=/opt/app/oracle/product/11.2.0/db_1
ORACLE_SID=XXXXXXXXX

# sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue Aug 4 11:58:16 2015
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters and Automatic Storage Management options

set linesize 200;

SQL>  select username,expiry_date,profile from dba_users;
USERNAME       EXPIRY_D PROFILE
------------------------------ -------- ------------------------------
MGMT_VIEW DEFAULT
SYS DEFAULT
SYSTEM DEFAULT
DBSNMP DEFAULT
SYSMAN DEFAULT
PERFSTAT DEFAULT
SGNGDBMC DEFAULT
NEORDS DEFAULT
ARCSDBPA DEFAULT
DRCSDBCB DEFAULT
ARCSDBSS DEFAULT

USERNAME       EXPIRY_D PROFILE
------------------------------ -------- ------------------------------
ARCSDBCO DEFAULT
ARCSDBCB DEFAULT
SGNGDBMS DEFAULT
ARCSDBCS DEFAULT
TRCSDBCB DEFAULT
XRCSDBCB DEFAULT
OUTLN       15-01-20 DEFAULT
WMSYS       15-01-20 DEFAULT
APPQOSSYS       15-01-20 DEFAULT
DIP       15-01-20 DEFAULT
GG_USER       15-04-07 DEFAULT

USERNAME       EXPIRY_D PROFILE
------------------------------ -------- ------------------------------
ORACLE_OCM       15-01-20 DEFAULT

23 rows selected.

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters and Automatic Storage Management options


[oracle@dbsv1 ~]$ sqlplus sys/パスワード@rmanrepo1 as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue Aug 4 12:01:34 2015
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Release 11.2.0.4.0 - 64bit Production

SQL> select username,expiry_date,profile from dba_users;

USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
MGMT_VIEW     15-07-23
DEFAULT

SYS     15-07-23
DEFAULT

SYSTEM     15-07-23
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
RMAN     16-01-30
DEFAULT

DBSNMP     15-07-30
DEFAULT

SYSMAN     15-07-30
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
OUTLN     15-01-24
DEFAULT

ANONYMOUS     15-01-24
DEFAULT

WMSYS     15-01-24
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
XDB     15-01-24
DEFAULT

APPQOSSYS     15-01-24
DEFAULT

DIP     15-01-24
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
ORACLE_OCM     15-01-24
DEFAULT

XS$NULL     15-01-24
DEFAULT


14 rows selected.

SQL> select username,expiry_date,profile from dba_users;

USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
MGMT_VIEW     15-07-23
DEFAULT

SYS     15-07-23
DEFAULT

SYSTEM     15-07-23
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
RMAN     16-01-30
DEFAULT

DBSNMP     15-07-30
DEFAULT

SYSMAN     15-07-30
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
OUTLN     15-01-24
DEFAULT

ANONYMOUS     15-01-24
DEFAULT

WMSYS     15-01-24
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
XDB     15-01-24
DEFAULT

APPQOSSYS     15-01-24
DEFAULT

DIP     15-01-24
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
ORACLE_OCM     15-01-24
DEFAULT

XS$NULL     15-01-24
DEFAULT


14 rows selected.

SQL> select *  from dba_profiles where PROFILE = 'DEFAULT'and RESOURCE_NAME = 'PASSWORD_LIFE_TIME';

PROFILE
------------------------------------------------------------
RESOURCE_NAME
----------------------------------------------------------------
RESOURCE_TYPE
----------------
LIMIT
--------------------------------------------------------------------------------
DEFAULT
PASSWORD_LIFE_TIME
PASSWORD
180


SQL> alter profile DEFAULT limit password_life_time unlimited;

Profile altered.

SQL> select *  from dba_profiles where PROFILE = 'DEFAULT'and RESOURCE_NAME = 'PASSWORD_LIFE_TIME';

PROFILE
------------------------------------------------------------
RESOURCE_NAME
----------------------------------------------------------------
RESOURCE_TYPE
----------------
LIMIT
--------------------------------------------------------------------------------
DEFAULT
PASSWORD_LIFE_TIME
PASSWORD
UNLIMITED


SQL> select username,expiry_date,profile from dba_users;

USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
MGMT_VIEW
DEFAULT

SYS
DEFAULT

SYSTEM
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
RMAN
DEFAULT

DBSNMP     15-07-30
DEFAULT

SYSMAN     15-07-30
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
OUTLN     15-01-24
DEFAULT

ANONYMOUS     15-01-24
DEFAULT

WMSYS     15-01-24
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
XDB     15-01-24
DEFAULT

APPQOSSYS     15-01-24
DEFAULT

DIP     15-01-24
DEFAULT


USERNAME     EXPIRY_D
------------------------------------------------------------ --------
PROFILE
------------------------------------------------------------
ORACLE_OCM     15-01-24
DEFAULT

XS$NULL     15-01-24
DEFAULT


14 rows selected.

【パスワード変更】
SQL> alter USER DBSNMP IDENTIFIED BY "パスワード";

SQL> exit
Disconnected from Oracle Database 11g Release 11.2.0.4.0 - 64bit Production
[oracle@dbsv1 ~]$ logout
[root@dbsv1 ~]# logout

メモリーキャッシュをクリアーする

# free
                 total                used                  free                shared    buffers         cached
Mem:      32814980   28182252      4632728     0              7003044   13676724
-/+ buffers/cache:        7502484    25312496
Swap:     33554424      95664   33458760

# sync;sync;sync

# sysctl -w vm.drop_caches=3
vm.drop_caches = 3
# free
                  total                used               free                  shared    buffers     cached
Mem:      32814980   15127824   17687156     0              11532      8721792
-/+ buffers/cache:         6394500   26420480
Swap:     33554424           95664    33458760

[root@dbsv1 ~]# sync




【参考】
# echo 1 > /proc/sys/vm/drop_caches
              1.ページキャッシュ解放
              2.ダーティキャッシュ、inode解放
              3.ページキャッシュとダーティキャッシュ、inode解放