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这篇文章主要为大家展示了“Oracle 12c 如何创建和删除 PDB”,内容简而易懂,条理清晰,希望能够帮助大家解决疑惑,下面让丸趣 TV 小编带领大家一起研究并学习一下“Oracle 12c 如何创建和删除 PDB”这篇文章吧。
1. 手工创建 PDB
从 SEED database 创建 PDB 的时候,可以指定文件存放的位置。有两种方法可以指定文件的位置。
第一种是在 CREATE PLUGGABLE DATABASE 语法中添加 FILE_NAME_CONVERT 选项。
http://www.cndba.cn/dave/article/221
http://www.cndba.cn/dave/article/221
SQL set lin 120
SQL col name for a60
SQL select * from v$dbfile;
13 /u01/app/oracle/oradata/dave/pdb1/ado2.dbf 3
14 /u01/app/oracle/oradata/dave/pdb1/cndba01.dbf 3
22 /u01/app/oracle/oradata/dave/cndba/system.dbf 4
23 /u01/app/oracle/oradata/dave/cndba/sysaux.dbf 4
24 /u01/app/oracle/oradata/dave/cndba/users.dbf 4
25 /u01/app/oracle/oradata/dave/cndba/ado1.dbf 4
26 /u01/app/oracle/oradata/dave/cndba/ado2.dbf 4
18 rows selected.
查看 PDB 的位置,创建新目录:
[oracle@Ora12c ~]$ mkdir /u01/app/oracle/oradata/dave/huaining
SQL create pluggable database huaining admin user cndba identified by cndba
file_name_convert=( /u01/app/oracle/oradata/dave/pdbseed/ , /u01/app/oracle/oradata/dave/huaining/
Pluggable database created.
也可以简写:http://www.cndba.cn/dave/article/221
create pluggable database huaining admin user cndba identified by cndba
file_name_convert=( pdbseed , huaining
SQL show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
4 CNDBA READ WRITE NO
5 HUAINING MOUNTED
– 查看 PDB 的状态:是 NEW,测试是不可用的。
http://www.cndba.cn/dave/article/221
SQL set lin 120
SQL col pdb_name for a15
SQL select pdb_name,status from dba_pdbs;
PDB_NAME STATUS
--------------- ---------
PDB1 NORMAL
PDB$SEED NORMAL
CNDBA NORMAL
HUAINING NEW
必须显示的打开数据库:http://www.cndba.cn/dave/article/221
SQL alter pluggable database huaining open;
Pluggable database altered.
SQL show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
4 CNDBA READ WRITE NO
5 HUAINING READ WRITE NO
SQL select pdb_name,status from dba_pdbs;
PDB_NAME STATUS
--------------- ---------
PDB1 NORMAL
PDB$SEED NORMAL
CNDBA NORMAL
HUAINING NORMAL
第二种方法,就是先指定 PDB_FILE_NAME_CONVERT 参数的值,然后执行创建命令,此时就不需要指定 FILE_NAME_CONVERT 选项。
http://www.cndba.cn/dave/article/221
[oracle@Ora12c pdbseed]$ mkdir /u01/app/oracle/oradata/dave/ahdba
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
pdb_file_name_convert string
pdb_lockdown string
pdb_os_credential string
SQL alter session set pdb_file_name_convert= /u01/app/oracle/oradata/dave/pdbseed/ , /u01/app/oracle/oradata/dave/ahdba/
Session altered.
SQL show parameter pdb_
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
pdb_file_name_convert string /u01/app/oracle/oradata/dave/p
dbseed/, /u01/app/oracle/orada
ta/dave/ahdba/
pdb_lockdown string
pdb_os_credential string
SQL create pluggable database ahdba admin user cndba identified by cndba;
Pluggable database created.
SQL show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
4 CNDBA READ WRITE NO
5 HUAINING READ WRITE NO
6 AHDBA MOUNTED
SQL alter pluggable database ahdba open;
Pluggable database altered.
SQL show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
4 CNDBA READ WRITE NO
5 HUAINING READ WRITE NO
6 AHDBA READ WRITE NO
SQL
2. 手工删除 PDB
在删除 PDB 的时候,有 2 个选项 KEEP DATAFILES 和 including DATAFILES, 默认是 KEEP.
SQL show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
4 CNDBA READ WRITE NO
5 HUAINING READ WRITE NO
6 AHDBA READ WRITE NO
SQL drop pluggable database huaining;
drop pluggable database huaining
ERROR at line 1:
ORA-65179: cannot keep datafiles for a pluggable database that is not unplugged
SQL !oerr ora 65179
65179, 00000, cannot keep datafiles for a pluggable database that is not unplugged
// *Cause: An attempt was made to drop a pluggable database without
// specifying the INCLUDING DATAFILES clause, and the pluggable
// database has not been unplugged.
// *Action: Unplug the pluggable database before dropping the pluggable
// database or use the INCLUDING DATAFILES clause in the
// DROP PLUGGABLE DATABASE statement.
SQL drop pluggable database huaining including datafiles;
Pluggable database dropped.
SQL show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
4 CNDBA READ WRITE NO
6 AHDBA READ WRITE NO
操作系统层面看,对应的文件,也一起删除了:[oracle@Ora12c huaining]$ pwd
/u01/app/oracle/oradata/dave/huaining[oracle@Ora12c huaining]$ ls[oracle@Ora12c huaining]$
如果是使用 KEEP datafiles,那么在执行 drop 之前,必须先执行 unplug 的操作。
SQL drop pluggable database ahdba keep datafiles;
drop pluggable database ahdba keep datafiles
ERROR at line 1:
ORA-65179: cannot keep datafiles for a pluggable database that is not unplugged
SQL alter pluggable database ahdba unplug into /tmp/ahdba.xml
Pluggable database altered.
SQL drop pluggable database ahdba keep datafiles;
Pluggable database dropped.
删除成功。
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