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Oracle 12c 数据库字符集AL32UTF8改为ZHS16GBK
[日期：2017-12-08] 来源：Linux社区 作者：roidba [字体：]
Oracle 12c 数据库字符集AL32UTF8改为ZHS16GBK
一、查看字符集
SQL> select * from v$version; BANNER CON_ID -------------------------------------------------------------------------------- ---------- Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production 0 PL/SQL Release 12.1.0.2.0 - Production 0 CORE 12.1.0.2.0 Production 0 TNS for Linux: Version 12.1.0.2.0 - Production 0 NLSRTL Version 12.1.0.2.0 - Production 0 SQL> select * from nls_database_parameters; PARAMETER VALUE ------------------------------ ------------------------------ NLS_RDBMS_VERSION 12.1.0.2.0 NLS_NCHAR_CONV_EXCP FALSE NLS_LENGTH_SEMANTICS BYTE NLS_COMP BINARY NLS_DUAL_CURRENCY $ NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZR NLS_TIME_TZ_FORMAT HH.MI.SSXFF AM TZR NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM NLS_TIME_FORMAT HH.MI.SSXFF AM NLS_SORT BINARY NLS_DATE_LANGUAGE AMERICAN PARAMETER VALUE ------------------------------ ------------------------------ NLS_DATE_FORMAT DD-MON-RR NLS_CALENDAR GREGORIAN NLS_NUMERIC_CHARACTERS ., NLS_NCHAR_CHARACTERSET AL16UTF16 NLS_CHARACTERSET AL32UTF8 NLS_ISO_CURRENCY AMERICA NLS_CURRENCY $ NLS_TERRITORY AMERICA NLS_LANGUAGE AMERICAN 20 rows selected.二、修改字符集
SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> startup mount; ORACLE instance started. Total System Global Area 1778384896 bytes Fixed Size 2925408 bytes Variable Size 1627393184 bytes Database Buffers 134217728 bytes Redo Buffers 13848576 bytes Database mounted. SQL> alter session set sql_trace=true; Session altered. SQL> alter system enable restricted session; System altered. SQL> alter system set job_queue_processes=0; System altered. SQL> alter system set aq_tm_processes=0; System altered. SQL> alter database open; Database altered. SQL> ALTER DATABASE CHARACTER SET INTERNAL_USE ZHS16GBK; Database altered. SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> SQL> startup ORACLE instance started. Total System Global Area 1778384896 bytes Fixed Size 2925408 bytes Variable Size 1627393184 bytes Database Buffers 134217728 bytes Redo Buffers 13848576 bytes Database mounted. Database opened. SQL> select userenv('language') from dual; USERENV('LANGUAGE') ---------------------------------------------------- AMERICAN_AMERICA.ZHS16GBK SQL> select * from nls_database_parameters; PARAMETER VALUE ------------------------------ ------------------------------ NLS_RDBMS_VERSION 12.1.0.2.0 NLS_NCHAR_CONV_EXCP FALSE NLS_LENGTH_SEMANTICS BYTE NLS_COMP BINARY NLS_DUAL_CURRENCY $ NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZR NLS_TIME_TZ_FORMAT HH.MI.SSXFF AM TZR NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM NLS_TIME_FORMAT HH.MI.SSXFF AM NLS_SORT BINARY NLS_DATE_LANGUAGE AMERICAN PARAMETER VALUE ------------------------------ ------------------------------ NLS_DATE_FORMAT DD-MON-RR NLS_CALENDAR GREGORIAN NLS_NUMERIC_CHARACTERS ., NLS_NCHAR_CHARACTERSET AL16UTF16 NLS_CHARACTERSET ZHS16GBK NLS_ISO_CURRENCY AMERICA NLS_CURRENCY $ NLS_TERRITORY AMERICA NLS_LANGUAGE AMERICAN 20 rows selected. -需要修改回来 JOB_QUEUE_PROCESSES 默认1000 AQ_TM_PROCESSES 默认10485760