数据文件从系统文件迁移到asm的操作专栏
select file_name ,tablespace_name from dba_data_files ;
FILE_NAME TABLESPACE_NAME
--------------------------------------------- ------------------------------
+DATA/rac/datafile/system.259.926647219 SYSTEM
+DATA/rac/datafile/sysaux.260.926647323 SYSAUX
+DATA/rac/datafile/undotbs1.261.926647405 UNDOTBS1
+DATA/rac/datafile/undotbs2.263.926647467 UNDOTBS2
+DATA/rac/datafile/users.264.926647499 USERS
+DATA/rac/datafile/admin_tbs.274.927927081 ADMIN_TBS
+DATA/rac/datafile/admin_tb2.275.927927171 ADMIN_TB2
+DATA/rac/datafile/tbs_low_freq.276.927939255 TBS_LOW_FREQ
/oracle/app/oracle/11.2/db_1/dbs/q1_orders Q1_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/q2_orders Q2_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/q3_orders Q3_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/q4_orders Q4_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/2006_orders 2006_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/2005_orders 2005_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/2004_orders 2004_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/old_orders OLD_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/cc_this_mont CC_THIS_MONTH
数据文件都节点1本地。
案例重演：
sys@RAC> show parameter db_create_file_dest
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_create_file_dest string +DATA
采用了omf管理
sys@RAC> create tablespace qn datafile size 20m ;
Tablespace created.
sys@RAC> select file_name ,tablespace_name from dba_data_files ;
FILE_NAME TABLESPACE_NAME
--------------------------------------------- ------------------------------
.........
+DATA/rac/datafile/qn.277.928807173 QN
此时发现数据文件qn建在ASM存储上
sys@RAC> create tablespace qn2 datafile 'qn2' size 20m ;
Tablespace created.
sys@RAC> select file_name ,tablespace_name from dba_data_files ;
FILE_NAME TABLESPACE_NAME
--------------------------------------------- ------------------------------
/oracle/app/oracle/11.2/db_1/dbs/cc_prev_12 CC_PREV_12MTH
/oracle/app/oracle/11.2/db_1/dbs/cc_old_tran CC_OLD_TRAN
+DATA/rac/datafile/qn.277.928807173 QN
/oracle/app/oracle/11.2/db_1/dbs/qn2 QN2
此时发现数据文件qn2建在系统文件上,这样会出问题的，其节点报错。
那么如何把这个数据库的系统文件迁移到ASM上呢？
在线迁移数据文件至ASM上：
1. offline数据文件
select file_name ,tablespace_name from dba_data_files where tablespace_name in ('Q1_ORDERS','Q2_ORDERS','Q3_ORDERS','Q4_ORDERS','2006_ORDERS','2005_ORDERS','2004_ORDERS','OLD_ORDERS','CC_THIS_MONTH','CC_PREV_MONTH','CC_PREV_12MTH','QN2' ) ;
FILE_NAME TABLESPACE_NAME
------------------------------------------------------------ ------------------------------
/oracle/app/oracle/11.2/db_1/dbs/q1_orders Q1_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/q2_orders Q2_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/q3_orders Q3_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/q4_orders Q4_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/2006_orders 2006_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/2005_orders 2005_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/2004_orders 2004_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/old_orders OLD_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/cc_this_month CC_THIS_MONTH
/oracle/app/oracle/11.2/db_1/dbs/cc_prev_month CC_PREV_MONTH
/oracle/app/oracle/11.2/db_1/dbs/cc_prev_12 CC_PREV_12MTH
/oracle/app/oracle/11.2/db_1/dbs/qn2 QN2
2. rman copy
alter tablespace Q1_ORDERS offline ;
backup as copy datafile '/oracle/app/oracle/11.2/db_1/dbs/q1_orders' format '+DATA';
or
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/q1_orders' to '+DATA';
RMAN> copy datafile '/oracle/app/oracle/11.2/db_1/dbs/q1_orders' to '+DATA';
Starting backup at 2016-11-25 02:55:42
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=28 instance=rac1 device type=DISK
channel ORA_DISK_1: starting datafile copy
input datafile file number=00009 name=/oracle/app/oracle/11.2/db_1/dbs/q1_orders
output file name=+DATA/rac/datafile/q1_orders.278.928810547 tag=TAG20161125T025546 RECID=1 STAMP=928810550
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 2016-11-25 02:55:50
3. rename
alter database rename file 'D:\NSOADP\SYSTEM01.DBF' to '+ORADATA/nsoa/datafile/system.260.877082571';
or
switch datafile 37 to copy;
RMAN> switch datafile '/oracle/app/oracle/11.2/db_1/dbs/q1_orders' to copy ;
datafile 9 switched to datafile copy "+DATA/rac/datafile/q1_orders.278.928810547"
4. recover
recover datafile '+DATA/rac/datafile/q1_orders.278.928810547';
5. online
alter tablespace Q1_ORDERS online
sys@RAC> select file_name ,tablespace_name from dba_data_files where tablespace_name in ('Q1_ORDERS')
2 /
FILE_NAME TABLESPACE_NAME
------------------------------------------------------------ ------------------------------
+DATA/rac/datafile/q1_orders.278.928810547 Q1_ORDERS
快速恢复:
sys@RAC> select file_name ,tablespace_name from dba_data_files where tablespace_name in ('Q2_ORDERS','Q3_ORDERS','Q4_ORDERS','2006_ORDERS','2005_ORDERS','2004_ORDERS','OLD_ORDERS','CC_THIS_MONTH','CC_PREV_MONTH','CC_PREV_12MTH','QN2' ) ;
FILE_NAME TABLESPACE_NAME
------------------------------------------------------------ ------------------------------
/oracle/app/oracle/11.2/db_1/dbs/q2_orders Q2_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/q3_orders Q3_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/q4_orders Q4_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/2006_orders 2006_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/2005_orders 2005_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/2004_orders 2004_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/old_orders OLD_ORDERS
/oracle/app/oracle/11.2/db_1/dbs/cc_this_month CC_THIS_MONTH
/oracle/app/oracle/11.2/db_1/dbs/cc_prev_month CC_PREV_MONTH
/oracle/app/oracle/11.2/db_1/dbs/cc_prev_12 CC_PREV_12MTH
/oracle/app/oracle/11.2/db_1/dbs/qn2 QN2
sys@RAC> select 'alter tablespace '|| tablespace_name||' offline;' from dba_data_files where tablespace_name in ('Q2_ORDERS','Q3_ORDERS','Q4_ORDERS','2006_ORDERS','2005_ORDERS','2004_ORDERS','OLD_ORDERS','CC_THIS_MONTH','CC_PREV_MONTH','CC_PREV_12MTH','QN2'
) ;
'ALTERTABLESPACE'||TABLESPACE_NAME||'OFFLINE;'
--------------------------------------------------------
alter tablespace Q2_ORDERS offline;
alter tablespace Q3_ORDERS offline;
alter tablespace Q4_ORDERS offline;
alter tablespace 2006_ORDERS offline;
alter tablespace 2005_ORDERS offline;
alter tablespace 2004_ORDERS offline;
alter tablespace OLD_ORDERS offline;
alter tablespace CC_THIS_MONTH offline;
alter tablespace CC_PREV_MONTH offline;
alter tablespace CC_PREV_12MTH offline;
alter tablespace QN2 offline;
sys@RAC> sys@RAC> alter tablespace Q2_ORDERS offline;
alter tablespace Q3_ORDERS offline;
alter tablespace Q4_ORDERS offline;
alter tablespace 2006_ORDERS offline;
alter tablespace 2005_ORDERS offline;
alter tablespace 2004_ORDERS offline;
alter tablespace OLD_ORDERS offline;
alter tablespace CC_THIS_MONTH offline;
alter tablespace CC_PREV_MONTH offline;
alter tablespace CC_PREV_12MTH offline;
alter tablespace QN2 offline;
sys@RAC> alter tablespace "2006_ORDERS" offline
*
ERROR at line 1:
ORA-02140: invalid tablespace name
sys@RAC> alter tablespace 2005_ORDERS offline
*
ERROR at line 1:
ORA-02140: invalid tablespace name
sys@RAC> alter tablespace 2004_ORDERS offline
*
ERROR at line 1:
ORA-02140: invalid tablespace name
alter tablespace "2004_ORDERS" offline;
alter tablespace "2005_ORDERS" offline;
alter tablespace "2006_ORDERS" offline;
select 'copy datafile '''||file_name||''' to ''+DATA'';' from dba_data_files where tablespace_name in ('Q2_ORDERS','Q3_ORDERS','Q4_ORDERS','2006_ORDERS','2005_ORDERS','2004_ORDERS','OLD_ORDERS','CC_THIS_MONTH','CC_PREV_MONTH','CC_PREV_12MTH','QN2' ) ;
'COPYDATAFILE'''||FILE_NAME||'''TO''+DATA'';'
----------------------------------------------------------------------------------------------------------------------------------------------------------
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/q2_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/q3_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/q4_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/2006_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/2005_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/2004_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/old_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_this_month' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_prev_month' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_prev_12' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/qn2' to '+DATA';
RMAN> copy datafile '/oracle/app/oracle/11.2/db_1/dbs/q2_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/q3_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/q4_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1
/dbs/2006_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/2005_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/2004_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/old_orders' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_this_month' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_prev_month' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_prev_12' to '+DATA';
copy datafile '/oracle/app/oracle/11.2/db_1/dbs/qn2' to '+DATA';Starting backup at 2016-11-25 03:20:57
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00010 name=/oracle/app/oracle/11.2/db_1/dbs/q2_orders
output file name=+DATA/rac/datafile/q2_orders.279.928812061 tag=TAG20161125T032059 RECID=3 STAMP=928812062
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 2016-11-25 03:21:02
RMAN>
Starting backup at 2016-11-25 03:21:08
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00011 name=/oracle/app/oracle/11.2/db_1/dbs/q3_orders
output file name=+DATA/rac/datafile/q3_orders.280.928812071 tag=TAG20161125T032109 RECID=4 STAMP=928812073
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
Finished backup at 2016-11-25 03:21:17
RMAN>
Starting backup at 2016-11-25 03:21:22
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00012 name=/oracle/app/oracle/11.2/db_1/dbs/q4_orders
output file name=+DATA/rac/datafile/q4_orders.281.928812085 tag=TAG20161125T032124 RECID=5 STAMP=928812088
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 2016-11-25 03:21:28
RMAN>
Starting backup at 2016-11-25 03:21:33
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00013 name=/oracle/app/oracle/11.2/db_1/dbs/2006_orders
output file name=+DATA/rac/datafile/2006_orders.282.928812095 tag=TAG20161125T032134 RECID=6 STAMP=928812099
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
Finished backup at 2016-11-25 03:21:42
RMAN>
Starting backup at 2016-11-25 03:21:46
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00014 name=/oracle/app/oracle/11.2/db_1/dbs/2005_orders
output file name=+DATA/rac/datafile/2005_orders.283.928812109 tag=TAG20161125T032148 RECID=7 STAMP=928812112
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
Finished backup at 2016-11-25 03:21:56
RMAN>
Starting backup at 2016-11-25 03:22:00
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00015 name=/oracle/app/oracle/11.2/db_1/dbs/2004_orders
output file name=+DATA/rac/datafile/2004_orders.284.928812123 tag=TAG20161125T032202 RECID=8 STAMP=928812126
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
Finished backup at 2016-11-25 03:22:10
RMAN>
Starting backup at 2016-11-25 03:22:14
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00016 name=/oracle/app/oracle/11.2/db_1/dbs/old_orders
output file name=+DATA/rac/datafile/old_orders.285.928812137 tag=TAG20161125T032216 RECID=9 STAMP=928812141
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
Finished backup at 2016-11-25 03:22:24
RMAN>
Starting backup at 2016-11-25 03:22:29
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00017 name=/oracle/app/oracle/11.2/db_1/dbs/cc_this_month
output file name=+DATA/rac/datafile/cc_this_month.286.928812151 tag=TAG20161125T032231 RECID=10 STAMP=928812154
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 2016-11-25 03:22:34
RMAN>
Starting backup at 2016-11-25 03:22:45
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00018 name=/oracle/app/oracle/11.2/db_1/dbs/cc_prev_month
output file name=+DATA/rac/datafile/cc_prev_month.287.928812167 tag=TAG20161125T032246 RECID=11 STAMP=928812167
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
Finished backup at 2016-11-25 03:22:47
RMAN>
Starting backup at 2016-11-25 03:22:52
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00019 name=/oracle/app/oracle/11.2/db_1/dbs/cc_prev_12
output file name=+DATA/rac/datafile/cc_prev_12mth.288.928812175 tag=TAG20161125T032253 RECID=12 STAMP=928812175
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 2016-11-25 03:22:57
Starting backup at 2016-11-25 03:26:09
RMAN>
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
input datafile file number=00022 name=/oracle/app/oracle/11.2/db_1/dbs/qn2
output file name=+DATA/rac/datafile/qn2.289.928812371 tag=TAG20161125T032611 RECID=13 STAMP=928812376
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
Finished backup at 2016-11-25 03:26:18
sys@RAC> select 'switch datafile '''||file_name||''' to copy;' from dba_data_files where tablespace_name in ('Q2_ORDERS','Q3_ORDERS','Q4_ORDERS','2006_ORDERS','2005_ORDERS','2004_ORDERS','OLD_ORDERS','CC_THIS_MONTH','CC_PREV_MONTH','CC_PREV_12MTH','QN2'
) ;
'SWITCHDATAFILE'''||FILE_NAME||'''TOCOPY;'
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/q2_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/q3_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/q4_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/2006_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/2005_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/2004_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/old_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_this_month' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_prev_month' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_prev_12' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/qn2' to copy;
RMAN> switch datafile '/oracle/app/oracle/11.2/db_1/dbs/q2_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/q3_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/q4_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/
dbs/2006_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/2005_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/2004_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/old_orders' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_this_month' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_prev_month' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/cc_prev_12' to copy;
switch datafile '/oracle/app/oracle/11.2/db_1/dbs/qn2' to copy;
datafile 10 switched to datafile copy "+DATA/rac/datafile/q2_orders.279.928812061"
RMAN>
datafile 11 switched to datafile copy "+DATA/rac/datafile/q3_orders.280.928812071"
RMAN>
datafile 12 switched to datafile copy "+DATA/rac/datafile/q4_orders.281.928812085"
RMAN>
datafile 13 switched to datafile copy "+DATA/rac/datafile/2006_orders.282.928812095"
RMAN>
datafile 14 switched to datafile copy "+DATA/rac/datafile/2005_orders.283.928812109"
RMAN>
datafile 15 switched to datafile copy "+DATA/rac/datafile/2004_orders.284.928812123"
RMAN>
datafile 16 switched to datafile copy "+DATA/rac/datafile/old_orders.285.928812137"
RMAN>
datafile 17 switched to datafile copy "+DATA/rac/datafile/cc_this_month.286.928812151"
RMAN>
datafile 18 switched to datafile copy "+DATA/rac/datafile/cc_prev_month.287.928812167"
RMAN>
datafile 19 switched to datafile copy "+DATA/rac/datafile/cc_prev_12mth.288.928812175"
RMAN>
datafile 22 switched to datafile copy "+DATA/rac/datafile/qn2.289.928812371"
alter tablespace Q3_ORDERS online;
alter tablespace Q4_ORDERS online;
alter tablespace "2006_ORDERS" online;
alter tablespace "2005_ORDERS" online;
alter tablespace "2004_ORDERS" online;
alter tablespace OLD_ORDERS online;
alter tablespace CC_THIS_MONTH online;
alter tablespace CC_PREV_MONTH online;
alter tablespace CC_PREV_12MTH online;
alter tablespace QN2 online;
sys@RAC> select file_name ,tablespace_name from dba_data_files where tablespace_name in ('Q1_ORDERS','Q2_ORDERS','Q3_ORDERS','Q4_ORDERS','2006_ORDERS','2005_ORDERS','2004_ORDERS','OLD_ORDERS','CC_THIS_MONTH','CC_PREV_MONTH','CC_PREV_12MTH','QN2' ) ;
FILE_NAME TABLESPACE_NAME
------------------------------------------------------------ ------------------------------
+DATA/rac/datafile/q1_orders.278.928810547 Q1_ORDERS
+DATA/rac/datafile/q2_orders.279.928812061 Q2_ORDERS
+DATA/rac/datafile/q3_orders.280.928812071 Q3_ORDERS
+DATA/rac/datafile/q4_orders.281.928812085 Q4_ORDERS
+DATA/rac/datafile/2006_orders.282.928812095 2006_ORDERS
+DATA/rac/datafile/2005_orders.283.928812109 2005_ORDERS
+DATA/rac/datafile/2004_orders.284.928812123 2004_ORDERS
+DATA/rac/datafile/old_orders.285.928812137 OLD_ORDERS
+DATA/rac/datafile/cc_this_month.286.928812151 CC_THIS_MONTH
+DATA/rac/datafile/cc_prev_month.287.928812167 CC_PREV_MONTH
+DATA/rac/datafile/cc_prev_12mth.288.928812175 CC_PREV_12MTH
+DATA/rac/datafile/qn2.289.928812371 QN2
至此系统上的数据文件都迁移到asm上。
更多相关教程请访问 MySQL视频教程
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Oracle에 대한 솔루션은 개설 할 수 없습니다. 1. 데이터베이스 서비스 시작; 2. 청취자를 시작하십시오. 3. 포트 충돌을 확인하십시오. 4. 환경 변수를 올바르게 설정하십시오. 5. 방화벽이나 바이러스 백신 소프트웨어가 연결을 차단하지 않도록하십시오. 6. 서버가 닫혀 있는지 확인하십시오. 7. RMAN을 사용하여 손상된 파일을 복구하십시오. 8. TNS 서비스 이름이 올바른지 확인하십시오. 9. 네트워크 연결 확인; 10. Oracle 소프트웨어를 다시 설치하십시오.
Oracle Cursor를 닫는 문제를 해결하는 방법
Apr 11, 2025 pm 10:18 PM
Oracle Cursor Closure 문제를 해결하는 방법에는 다음이 포함됩니다. Close 문을 사용하여 커서를 명시 적으로 닫습니다. For Update 절에서 커서를 선언하여 범위가 종료 된 후 자동으로 닫히십시오. 연관된 PL/SQL 변수가 닫히면 자동으로 닫히도록 사용 절에서 커서를 선언하십시오. 예외 처리를 사용하여 예외 상황에서 커서가 닫혀 있는지 확인하십시오. 연결 풀을 사용하여 커서를 자동으로 닫습니다. 자동 제출을 비활성화하고 커서 닫기를 지연시킵니다.
Oracle Loop에서 커서를 만드는 방법
Apr 12, 2025 am 06:18 AM
Oracle에서 FOR 루프 루프는 커서를 동적으로 생성 할 수 있습니다. 단계는 다음과 같습니다. 1. 커서 유형을 정의합니다. 2. 루프를 만듭니다. 3. 커서를 동적으로 만듭니다. 4. 커서를 실행하십시오. 5. 커서를 닫습니다. 예 : 커서는 상위 10 명의 직원의 이름과 급여를 표시하기 위해주기별로 만들 수 있습니다.
Oracle 로그가 가득 차면해야 할 일
Apr 12, 2025 am 06:09 AM
Oracle Log 파일이 가득 차면 다음 솔루션을 채택 할 수 있습니다. 1) 오래된 로그 파일 청소; 2) 로그 파일 크기를 늘리십시오. 3) 로그 파일 그룹을 늘리십시오. 4) 자동 로그 관리를 설정합니다. 5) 데이터베이스를 다시 이용하십시오. 솔루션을 구현하기 전에 데이터 손실을 방지하기 위해 데이터베이스를 백업하는 것이 좋습니다.
Oracle View를 내보내는 방법
Apr 12, 2025 am 06:15 AM
Oracle View는 Expitility : Oracle 데이터베이스에 로그인하여 내보낼 수 있습니다. 뷰 이름 및 내보내기 디렉토리를 지정하여 EXP 유틸리티를 시작하십시오. 대상 모드, 파일 형식 및 테이블 스페이스를 포함한 내보내기 매개 변수를 입력하십시오. 내보내기를 시작하십시오. IMPDP 유틸리티를 사용하여 내보내기를 확인하십시오.
비즈니스 세계에서 오라클의 역할
Apr 23, 2025 am 12:01 AM
Oracle은 데이터베이스 회사 일뿐 만 아니라 클라우드 컴퓨팅 및 ERP 시스템의 리더이기도합니다. 1. Oracle은 데이터베이스에서 클라우드 서비스 및 ERP 시스템에 이르기까지 포괄적 인 솔루션을 제공합니다. 2. OracleCloud는 AWS와 Azure에 도전하여 IAA, PAAS 및 SAAS 서비스를 제공합니다. 3. E-BusinessSuite 및 FusionApplications와 같은 Oracle의 ERP 시스템은 기업이 운영을 최적화하는 데 도움이됩니다.
HDFS에서 CentOS를 구성하는 데 어떤 단계가 필요합니까?
Apr 14, 2025 pm 06:42 PM
Centos 시스템에서 Hadoop 분산 파일 시스템 (HDF)을 구축하려면 여러 단계가 필요합니다. 이 기사는 간단한 구성 안내서를 제공합니다. 1. 초기 단계에서 JDK를 설치할 준비 : 모든 노드에 JavadevelopmentKit (JDK)을 설치하면 버전이 Hadoop과 호환되어야합니다. 설치 패키지는 Oracle 공식 웹 사이트에서 다운로드 할 수 있습니다. 환경 변수 구성 : /etc /프로파일 파일 편집, Java 및 Hadoop 설정 설정 시스템에서 JDK 및 Hadoop의 설치 경로를 찾을 수 있습니다. 2. 보안 구성 : SSH 비밀번호가없는 로그인 SSH 키 : 각 노드에서 ssh-keygen 명령을 사용하십시오.
Oracle 데이터베이스를 중지하는 방법
Apr 12, 2025 am 06:12 AM
Oracle 데이터베이스를 중지하려면 다음 단계를 수행하십시오. 1. 데이터베이스에 연결하십시오. 2. 즉시 종료; 3. 셧다운은 완전히 중단됩니다.
