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  • Oracle Magazine - Sep/Oct 2010

    Oracle Magazine Sep/Oct features articles on Oracle Exadata, Database Security, Oracle Enterprise Manager 11g, PL/Scope to analyze your PL/SQL, Using Oracle Essbase Release 11.1.2 Aggregate Storage Option Databases, Oracle Application Express 4.0 Websheets, Oracle Automatic Storage Management disk groups, Tom Kyte revisits a classic, recounts Cardinality Feedback, and remembers SQL*Plus and much more.

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  • wlan0 (WPA2) doesn't work when configured manually

    - by 71GA
    I have been trying to reconfigure my eth0 and wlan0 interfaces by editing /etc/network/interfaces file as folows: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.1.11 gateway 192.168.1.1 netmask 255.255.255.0 network 192.168.1.0 dns-nameservers 193.2.1.66 auto wlan0 iface wlan0 inet static address 192.168.1.10 gateway 192.168.1.1 netmask 255.255.255.0 network 192.168.1.0 dns-nameservers 193.2.1.66 wpa-driver wext wpa-ssid lausi wpa-ap-scan 2 wpa-proto RSN wpa-pairwise CCMP wpa-group CCMP wpa-key-mgmt WPA-PSK wpa-psk 8952a447c860d13847ba1cabd15314ba9caf2fb207f19598f90c43fcd43c0d97 But my wireless doesnt work when i use command /etc/init.d/networking restart and when i do this i get an error: * Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces * Reconfiguring network interfaces... RTNETLINK answers: File exists Failed to bring up eth0. ioctl[SIOCSIWENCODEEXT]: Invalid argument ioctl[SIOCSIWENCODEEXT]: Invalid argument RTNETLINK answers: File exists Failed to bring up wlan0. Although it clearly states that my eth0 interface couldn't be brought to life it is working! But i cant say this for the wlan0 interface which doesn't even work if i unplug internet cable and again use command /etc/init.d/networking restart. This seems weird to me... When i use ìfconfig -a command i get an output which confirms that wlan0 isnt working and eth0 is. ziga@ziga-cq56:/etc/network$ ifconfig -a eth0 Link encap:Ethernet HWaddr 60:eb:69:6f:5f:69 inet addr:192.168.1.11 Bcast:192.168.1.13 Mask:255.255.255.0 inet6 addr: fe80::62eb:69ff:fe6f:5f69/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6764 errors:0 dropped:0 overruns:0 frame:0 TX packets:6641 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:5932190 (5.9 MB) TX bytes:1331846 (1.3 MB) Interrupt:42 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1759 errors:0 dropped:0 overruns:0 frame:0 TX packets:1759 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:107772 (107.7 KB) TX bytes:107772 (107.7 KB) wlan0 Link encap:Ethernet HWaddr 70:f3:95:e7:57:cc inet addr:192.168.1.10 Bcast:192.168.1.12 Mask:255.255.255.0 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) How can i make my wlan0 interface work? It had been working previously with network manager and wicd...

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  • Applying DDD principles in a RESTish web service

    - by Andy
    I am developing an RESTish web service. I think I got the idea of the difference between aggregation and composition. Aggregation does not enforce lifecycle/scope on the objects it references. Composition does enforce lifecycle/scope on the objects it contain/own. If I delete a composite object then all the objects it contain/own are deleted as well, while the deleting an aggregate root does not delete referenced objects. 1) If it is true that deleting aggregate roots does not necessary delete referenced objects, what sense does it make to not have a repository for the references objects? Or are aggregate roots as a term referring to what is known as composite object? 2) When you create an web service you will have multiple endpoints, in my case I have one entity Book and another named Comment. It does not make sense to leave the comments in my application if the book is deleted. Therefore, book is a composite object. I guess I should not have a repository for comments since that would break the enforcement of lifecycle and rules that the book class may have. However I have URL such as (examples only): GET /books/1/comments POST /books/1/comments Now, if I do not have a repository for comments, does that mean I have to load the book object and then return the referenced comments? Am I allowed to return a list of Comment entities from the BookRepository, does that make sense? The repository for Book may eventually become rather big with all sorts of methods. Am I allowed to write JPQL (JPA queries) that targets comments and not books inside the repository? What about pagination and filtering of comments. When adding a new comment triggered by the POST endpoint, do you need to load the book, add the comment to the book, and then update the whole book object? What I am currently doing is having a own CommentRepository, even though the comments are deleted with the book. I could need some direction on how to do it correct. Since you are exposing not only root objects in RESTish services I wonder how to handle this at the backend. I am using Hibernate and Spring.

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  • 5 Easy Ways Link Building

    Link building is a way in which, if properly done can increase your site popularity and overall ranking on the search engines. More the number of links, more will be your visibility and scope and more will the traffic directed from the search engines.

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  • L'EDI BlueJ est sorti dans sa version 3.0. Votre avis sur cet environnement de développement destiné

    Bonjour, BlueJ est un environnement de développement spécifiquement destiné à l'enseignement de Java, développé conjointement par l'Université de Deakin (Melbourne, Australie) et l'Université de Kent (Canterbury, Angleterre) et soutenu par Sun Microsystems. La dernière version majeure de BlueJ (2.0) datait de 2004. Au programme : Mise à jour du look de l'interface Scope highlighting Vue de navigation Complétion de code Que pensez-vous de cette initiative ? Source

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  • SEO For the Beginner - Three Basic Methods

    Search Engine Optimization, or SEO as it is known, is a process of improving the quality or amount of traffic that visits one's website through search engine results. For anyone who is just entering into this new world of search engine optimization, the scope of it can be overwhelming.

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  • Planning a Website and What to Expect

    A successful project begins with careful planning. No matter what the size of the task at hand (whether running errands or plotting for world domination), ample thought needs to be given to the task as a whole before the work begins. This is especially true for website development. Planning the strategy for the site and how the website fits into the larger vision of the project beyond the scope of the online presence is an absolutely essential phase for both the website developer and the client.

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  • ?Oracle????SELECT????UNDO

    - by Liu Maclean(???)
    ????????Oracle?????(dirty read),?Oracle??????Asktom????????Oracle???????, ???undo??????????(before image)??????Consistent, ???????????????Oracle????????????? ????????? ??,??,Oracle?????????????RDBMS,???????????? ?????????2?????: _offline_rollback_segments or _corrupted_rollback_segments ?2?????????Oracle???????????ORA-600[4XXX]???????????????,???2??????Undo??Corruption????????????,?????2????????????????? ??????????????_offline_rollback_segments ? _corrupted_rollback_segments ?2?????: ???????(FORCE OPEN DATABASE) ????????????(consistent read & delayed block cleanout) ??????rollback segment??? ?????:???????Oracle????????,??????????2?????,?????????????!! _offline_rollback_segments ? _corrupted_rollback_segments ???????????: ??2???????Undo Segments(???/???)????????online ?UNDO$???????????OFFLINE??? ???instance??????????????????? ??????Undo Segments????????active transaction????????????dead??SMON???(????????SMON??(?):Recover Dead transaction) _OFFLINE_ROLLBACK_SEGMENTS(offline undo segment list)????(hidden parameter)?????: ???startup???open database???????_OFFLINE_ROLLBACK_SEGMENTS????Undo segments(???/???),?????undo segments????????alert.log???TRACE?????,???????startup?? ?????????????,?ITL?????undo segments?: ???undo segments?transaction table?????????????????? ???????????commit,?????CR??? ????undo segments????(???corrupted??,???missed??)???????????alert.log,??????? ?DML?????????????????????????????????CPU,????????????????????? _CORRUPTED_ROLLBACK_SEGMENTS(corrupted undo segment list)??????????: ?????startup?open database???_CORRUPTED_ROLLBACK_SEGMENTS????undo segments(???/???)???????? ???????_CORRUPTED_ROLLBACK_SEGMENTS???undo segments????????????commit,???undo segments???drop??? ??????????? ??????????????????,?????????????????? ??bootstrap???????????,?????????ORA-00704: bootstrap process failure??,???????????(???Oracle????:??ORA-00600:[4000] ORA-00704: bootstrap process failure????) ??????_CORRUPTED_ROLLBACK_SEGMENTS????????????????????,??????????????? Oracle???????TXChecker??????????? ???????2?????,??????????????_CORRUPTED_ROLLBACK_SEGMENTS?????SELECT????UNDO???????: SQL> alter system set event= '10513 trace name context forever, level 2' scope=spfile; System altered. SQL> alter system set "_in_memory_undo"=false scope=spfile; System altered. 10513 level 2 event????SMON ??rollback ??? dead transaction _in_memory_undo ?? in memory undo ?? SQL> startup force; ORACLE instance started. Total System Global Area 3140026368 bytes Fixed Size 2232472 bytes Variable Size 1795166056 bytes Database Buffers 1325400064 bytes Redo Buffers 17227776 bytes Database mounted. Database opened. session A: SQL> conn maclean/maclean Connected. SQL> create table maclean tablespace users as select 1 t1 from dual connect by level exec dbms_stats.gather_table_stats('','MACLEAN'); PL/SQL procedure successfully completed. SQL> set autotrace on; SQL> select sum(t1) from maclean; SUM(T1) ---------- 501 Execution Plan ---------------------------------------------------------- Plan hash value: 1679547536 ------------------------------------------------------------------------------ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------ | 0 | SELECT STATEMENT | | 1 | 3 | 3 (0)| 00:00:01 | | 1 | SORT AGGREGATE | | 1 | 3 | | | | 2 | TABLE ACCESS FULL| MACLEAN | 501 | 1503 | 3 (0)| 00:00:01 | ------------------------------------------------------------------------------ Statistics ---------------------------------------------------------- 1 recursive calls 0 db block gets 3 consistent gets 0 physical reads 0 redo size 515 bytes sent via SQL*Net to client 492 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 1 rows processe ???????????,????current block, ????????,consistent gets??3? SQL> update maclean set t1=0; 501 rows updated. SQL> alter system checkpoint; System altered. ??session A?commit; ???? session: SQL> conn maclean/maclean Connected. SQL> SQL> set autotrace on; SQL> select sum(t1) from maclean; SUM(T1) ---------- 501 Execution Plan ---------------------------------------------------------- Plan hash value: 1679547536 ------------------------------------------------------------------------------ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------ | 0 | SELECT STATEMENT | | 1 | 3 | 3 (0)| 00:00:01 | | 1 | SORT AGGREGATE | | 1 | 3 | | | | 2 | TABLE ACCESS FULL| MACLEAN | 501 | 1503 | 3 (0)| 00:00:01 | ------------------------------------------------------------------------------ Statistics ---------------------------------------------------------- 0 recursive calls 0 db block gets 505 consistent gets 0 physical reads 108 redo size 515 bytes sent via SQL*Net to client 492 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 1 rows processed ?????? ?????????undo??CR?,???consistent gets??? 505 [oracle@vrh8 ~]$ ps -ef|grep LOCAL=YES |grep -v grep oracle 5841 5839 0 09:17 ? 00:00:00 oracleG10R25 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq))) [oracle@vrh8 ~]$ kill -9 5841 ??session A???Server Process????,???dead transaction ????smon?? select ktuxeusn, to_char(sysdate, 'DD-MON-YYYY HH24:MI:SS') "Time", ktuxesiz, ktuxesta from x$ktuxe where ktuxecfl = 'DEAD'; KTUXEUSN Time KTUXESIZ KTUXESTA ---------- -------------------- ---------- ---------------- 2 06-AUG-2012 09:20:45 7 ACTIVE ???1?active rollback segment SQL> conn maclean/maclean Connected. SQL> set autotrace on; SQL> select sum(t1) from maclean; SUM(T1) ---------- 501 Execution Plan ---------------------------------------------------------- Plan hash value: 1679547536 ------------------------------------------------------------------------------ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------ | 0 | SELECT STATEMENT | | 1 | 3 | 3 (0)| 00:00:01 | | 1 | SORT AGGREGATE | | 1 | 3 | | | | 2 | TABLE ACCESS FULL| MACLEAN | 501 | 1503 | 3 (0)| 00:00:01 | ------------------------------------------------------------------------------ Statistics ---------------------------------------------------------- 0 recursive calls 0 db block gets 411 consistent gets 0 physical reads 108 redo size 515 bytes sent via SQL*Net to client 492 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 1 rows processed ????? ????kill?? ???smon ??dead transaction , ???????????? ?????undo??????? ????active?rollback segment??? SQL> select segment_name from dba_rollback_segs where segment_id=2; SEGMENT_NAME ------------------------------ _SYSSMU2$ SQL> alter system set "_corrupted_rollback_segments"='_SYSSMU2$' scope=spfile; System altered. ? _corrupted_rollback_segments ?? ???2?rollback segment, ????????undo SQL> startup force; ORACLE instance started. Total System Global Area 3140026368 bytes Fixed Size 2232472 bytes Variable Size 1795166056 bytes Database Buffers 1325400064 bytes Redo Buffers 17227776 bytes Database mounted. Database opened. SQL> conn maclean/maclean Connected. SQL> set autotrace on; SQL> select sum(t1) from maclean; SUM(T1) ---------- 94 Execution Plan ---------------------------------------------------------- Plan hash value: 1679547536 ------------------------------------------------------------------------------ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------ | 0 | SELECT STATEMENT | | 1 | 3 | 3 (0)| 00:00:01 | | 1 | SORT AGGREGATE | | 1 | 3 | | | | 2 | TABLE ACCESS FULL| MACLEAN | 501 | 1503 | 3 (0)| 00:00:01 | ------------------------------------------------------------------------------ Statistics ---------------------------------------------------------- 228 recursive calls 0 db block gets 29 consistent gets 5 physical reads 116 redo size 514 bytes sent via SQL*Net to client 492 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 4 sorts (memory) 0 sorts (disk) 1 rows processed SQL> / SUM(T1) ---------- 94 Execution Plan ---------------------------------------------------------- Plan hash value: 1679547536 ------------------------------------------------------------------------------ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------ | 0 | SELECT STATEMENT | | 1 | 3 | 3 (0)| 00:00:01 | | 1 | SORT AGGREGATE | | 1 | 3 | | | | 2 | TABLE ACCESS FULL| MACLEAN | 501 | 1503 | 3 (0)| 00:00:01 | ------------------------------------------------------------------------------ Statistics ---------------------------------------------------------- 0 recursive calls 0 db block gets 3 consistent gets 0 physical reads 0 redo size 514 bytes sent via SQL*Net to client 492 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 1 rows processed ?????? consistent gets???3,?????????????????,??ITL???UNDO SEGMENTS?_corrupted_rollback_segments????,???????????COMMIT??,????UNDO? ???????,?????????????????????????(????????????????????),????????????????? ???? , ?????

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  • ?11.2RAC??????????????

    - by JaneZhang(???)
           ?????,???????????????,???dbca???????,???????????dbca,?????????11.2???????,???????,??dbca??????????????????,????????????????     ????11.2???????RACDB2???,?????RACDB1? ?????rac1,????rac2?     ?11.2?,?????grid?????GI,??oracle????????,????????oracle?????? 1. ??????????????????,?????,???????????:audit_file_dest, background_dump_dest, user_dump_dest ?core_dump_dest????audit_file_dest=/u01/app/oracle/admin/RACDB/adump,?????????,?????????:ORA-09925: Unable to create audit trail fileLinux-x86_64 Error: 2: No such file or directoryAdditional information: 99252. ????????????????????????????:SQL> alter system set instance_number=2 scope=spfile sid='RACDB2';SQL> alter system set thread=2 scope=spfile sid='RACDB2';SQL> alter system set undo_tablespace='UNDOTBS2' scope=spfile sid='RACDB2';SQL> alter system set local_listener='(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.0.2.122)(PORT=1521))))' sid='RACDB2'; <=====192.0.2.122???2?VIP 3. ???????DB?$ORACLE_HOME/dbs/init<sid>.ora ?????DB?$ORACLE_HOME/dbs/init<sid>.ora,??????????????init<sid>.ora ????,????spfile???:=======================SPFILE='+DATA/racdb/spfileracdb.ora'??:[oracle@rac1 ~]$ scp $ORACLE_HOME/dbs/initRACDB1.ora rac2:$ORACLE_HOME/dbs/initRACDB2.ora <===????????24.  ??????/etc/oratab,????????????:RACDB2:/u01/app/oracle/product/11.2.0/dbhome_1:N       5.  ???????????: DB?$ORACLE_HOME/dbs/ora<sid>.pwd ????DB?$ORACLE_HOME/dbs/ora<sid>.pwd,??????????????:[oracle@rac1 dbs]$ scp $ORACLE_HOME/dbs/orapwRACDB1 rac2:$ORACLE_HOME/dbs/orapwRACDB2 <==?????26.  ?????????????,????????UNDO TABLESPACE?(??????dbca?????,???????undo tablespace????,?????????)??:SQL>CREATE UNDO TABLESPACE "UNDOTBS2" DATAFILE '/dev/….' SIZE 4096M ;???????:SQL>CREATE UNDO TABLESPACE "UNDOTBS2" DATAFILE '+DATA' SIZE 4096M ;7.  ?????????????,????????redo thread?redo log:??:SQL> alter database add logfile thread 2      group 3 ('/dev/...', '/dev/...') size 1024M,     group 4 ('/dev/...','dev/...') size 1024M;???????:SQL> alter database add logfile thread 2     group 3 ('+DATA','+RECO') size 1024M,     group 4 ('+DATA','+RECO') size 1024M;SQL> alter database enable thread 2; <==????thread8.  ??????????,?????????????:[oracle@rac2 admin]$su - oracle[oracle@rac2 admin]$export ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1[oracle@rac2 admin]$export ORACLE_SID=RACDB2[oracle@rac2 admin]$ sqlplus / as sysdbaSQL> startup <==??????,???????2????????????9. ?????OCR???GI??,?????????????:$srvctl add instance -d <database name> -i <new instance name> -n <new node name>Example of srvctl add instance command:============================[oracle@rac2 ~]$ srvctl add instance -d racdb -i RACDB2 -n rac2  <==????????,????ps -ef|grep smon???[oracle@rac2 dbs]$ ps -ef|grep smonroot      3453     1  1 Jun12 ?        04:03:05 /u01/app/11.2.0/grid/bin/osysmond.bingrid      3727     1  0 Jun12 ?        00:00:19 asm_smon_+ASM2oracle    5343  4543  0 14:06 pts/1    00:00:00 grep smonoracle   28736     1  0 Jun25 ?        00:00:03 ora_smon_RACDB2 <========??????10. ???????:$su - grid[grid@rac2 ~]$ crsctl stat res -t...ora.racdb.db      1        ONLINE  ONLINE       rac1                     Open                      2        OFFLINE OFFLINE             rac2????,??????offline,????????????sqlplus??????sqlplus??????,???srvctl??:[grid@rac2 ~]$ su  - oraclePassword: [oracle@rac2 ~]$ sqlplus / as sysdbaSQL> shutdown immediate;Database closed.Database dismounted.ORACLE instance shut down.SQL> exit[oracle@rac2 ~]$ srvctl start instance -d racdb -i RACDB2[oracle@rac2 ~]$ su - gridPassword: [grid@rac2 ~]$ crsctl stat res -tora.racdb.db      1        ONLINE  ONLINE       rac1                     Open                      2        ONLINE  ONLINE       rac2                     Open                11. ?????????:[oracle@rac2 ~]$ crsctl stat res ora.racdb.db -pNAME=ora.racdb.dbTYPE=ora.database.typeACL=owner:oracle:rwx,pgrp:oinstall:rwx,other::r--ACTION_FAILURE_TEMPLATE=ACTION_SCRIPT=ACTIVE_PLACEMENT=1AGENT_FILENAME=%CRS_HOME%/bin/oraagent%CRS_EXE_SUFFIX%AUTO_START=restoreCARDINALITY=2CHECK_INTERVAL=1CHECK_TIMEOUT=30CLUSTER_DATABASE=trueDATABASE_TYPE=RACDB_UNIQUE_NAME=RACDBDEFAULT_TEMPLATE=PROPERTY(RESOURCE_CLASS=database) PROPERTY(DB_UNIQUE_NAME= CONCAT(PARSE(%NAME%, ., 2), %USR_ORA_DOMAIN%, .)) ELEMENT(INSTANCE_NAME= %GEN_USR_ORA_INST_NAME%) ELEMENT(DATABASE_TYPE= %DATABASE_TYPE%)DEGREE=1DESCRIPTION=Oracle Database resourceENABLED=1FAILOVER_DELAY=0FAILURE_INTERVAL=60FAILURE_THRESHOLD=1GEN_AUDIT_FILE_DEST=/u01/app/oracle/admin/RACDB/adumpGEN_START_OPTIONS=GEN_START_OPTIONS@SERVERNAME(rac1)=openGEN_START_OPTIONS@SERVERNAME(rac2)=openGEN_USR_ORA_INST_NAME=GEN_USR_ORA_INST_NAME@SERVERNAME(rac1)=RACDB1HOSTING_MEMBERS=INSTANCE_FAILOVER=0LOAD=1LOGGING_LEVEL=1MANAGEMENT_POLICY=AUTOMATICNLS_LANG=NOT_RESTARTING_TEMPLATE=OFFLINE_CHECK_INTERVAL=0ONLINE_RELOCATION_TIMEOUT=0ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1ORACLE_HOME_OLD=PLACEMENT=restrictedPROFILE_CHANGE_TEMPLATE=RESTART_ATTEMPTS=2ROLE=PRIMARYSCRIPT_TIMEOUT=60SERVER_POOLS=ora.RACDBSPFILE=+DATA/RACDB/spfileRACDB.oraSTART_DEPENDENCIES=hard(ora.DATA.dg,ora.RECO.dg) weak(type:ora.listener.type,global:type:ora.scan_listener.type,uniform:ora.ons,global:ora.gns) pullup(ora.DATA.dg,ora.RECO.dg)START_TIMEOUT=600STATE_CHANGE_TEMPLATE=STOP_DEPENDENCIES=hard(intermediate:ora.asm,shutdown:ora.DATA.dg,shutdown:ora.RECO.dg)STOP_TIMEOUT=600TYPE_VERSION=3.2UPTIME_THRESHOLD=1hUSR_ORA_DB_NAME=RACDBUSR_ORA_DOMAIN=USR_ORA_ENV=USR_ORA_FLAGS=USR_ORA_INST_NAME=USR_ORA_INST_NAME@SERVERNAME(rac1)=RACDB1USR_ORA_INST_NAME@SERVERNAME(rac2)=RACDB2USR_ORA_OPEN_MODE=openUSR_ORA_OPI=falseUSR_ORA_STOP_MODE=immediateVERSION=11.2.0.3.0???11.2,?OCR???database??,??????,???????????database???????database???????,??????,???????????????ASM????????????  ?:dbca ???????????:????????oracle????dbca:su - oracledbca?? RAC database?? Instance Management?? add an instance???active rac database??????? ??undo?redo??

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  • ASA DHCP Relay configuration..

    - by Jeff
    I have locations in different cities, connected using 2 Cisco ASA devices. my main location, corporate, use the IP 192.168.1.x The second location, remote store, use the IP 192.168.3.x I have a DHCP server (192.168.1.254) at my corporate location. I have created a scope for the 192.168.1.x which works fine for the corporate location. I created a scope for the remote location (192.168.3.x) on my DHCP server and tried to configure the remote ASA DCHP Relay, on the remote ASA: I disabled the DHCP Server on the inside. I enabled DHCP Relay on the inside, with set route set at yes. I set the Global DHCP Relay Servers, specify up to four servers to which DHCP requests would be relayed. I added my DHCP, 192.168.1.254 I flashed these settings to the ASA and gave it a try, didn't do anything. am i missing something - forgetting something. not really sure what im doing wrong. DHCP Settings on remote ASA: dhcp-client update dns server both dhcpd dns 192.168.1.254 dhcpd ping_timeout 750 dhcpd domain JEWELS.LOCAL dhcpd auto_config outside dhcpd update dns both ! dhcpd address 192.168.3.2-192.168.3.33 inside ! dhcprelay server 192.168.1.254 outside dhcprelay enable inside dhcprelay setroute inside on my local ASA: i have two ACLs for UDP ports 67 and 68 permitting any inbound traffic from the remote locations IP ... dhcprelay timeout 120

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  • How do I effectively use WinSCP on my GoDaddy Dedicated Hosting

    - by Scott
    After being told that Virtual Private Servers would not fit the scope of my project, I have timidly entered the world of dedicated hosting. Unfortunately, this is forcing me how to learn the basics of being a Linux server admin. GoDaddy has a master account for the server. When you use SSH, they want you to use "su" to switch to the root user. Thus far, I have been able to do everything I have needed to thus far via the command line as this root user. However, now I need to upload files to my server. I'm used to using WinSCP to upload files. I can use my general server account to view the files but when I try to drag or create files its says that I cannot because I do not have permission to do so. I have researched the WinSCP documentation and it seems that this "su" function is beyond the scope of the program. How am I to grant myself access to upload these files using SSH? Should I create a user with the proper permissions? I'm happy to do this but thus far I have not been able to make sense of what I have found online. I'm going to try and move forward but any help and/or insight is appreciated.

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  • How do I tell ubuntu to send traffic to a single IP through eth6?

    - by flashnode
    I want to ensure that all IP traffic going to 172.16.60.62 uses eth6. Please provide complete commands because my linux-fu is rusty. The host is running Ubuntu Precise 12.04 user@host:~$ ifconfig eth3 eth3 Link encap:Ethernet HWaddr 00:e0:81:72:fe:c9 inet addr:172.16.60.122 Bcast:172.16.60.255 Mask:255.255.255.0 inet6 addr: fe80::2e0:81ff:fe72:fec9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:128500 errors:0 dropped:0 overruns:0 frame:0 TX packets:29082 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:67524823 (67.5 MB) TX bytes:2217634 (2.2 MB) Interrupt:71 Base address:0x6000 user@host:~$ ifconfig eth6 eth6 Link encap:Ethernet HWaddr 00:60:dd:47:81:35 inet addr:172.16.60.61 Bcast:172.16.60.255 Mask:255.255.255.0 inet6 addr: fe80::260:ddff:fe47:8135/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:9000 Metric:1 RX packets:109610 errors:0 dropped:0 overruns:0 frame:0 TX packets:109388 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:10785630 (10.7 MB) TX bytes:10754350 (10.7 MB) Interrupt:70 user@host:~$ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 172.16.60.1 0.0.0.0 UG 0 0 0 eth3 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth6 172.16.60.0 0.0.0.0 255.255.255.0 U 1 0 0 eth6 172.16.60.0 0.0.0.0 255.255.255.0 U 1 0 0 eth3

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  • LDAP not showing secondary groups

    - by Sandy Dolphinaura
    Currently, I have a LDAP server (running ClearOS if that makes any difference) containing a database of users. So, I went and setup LDAP on a couple of my debian VMs, using libpam-ldapd and I discovered this odd problem. My group/user mapping would show up when running getent group but the secondary groups would not show up when running id . Here is my /etc/nslcd.conf # /etc/nslcd.conf # nslcd configuration file. See nslcd.conf(5) # for details. # The user and group nslcd should run as. uid nslcd gid nslcd # The location at which the LDAP server(s) should be reachable. uri ldaps://10.3.0.1 # The search base that will be used for all queries. base dc=pnet,dc=sandyd,dc=me # The LDAP protocol version to use. #ldap_version 3 # The DN to bind with for normal lookups. binddn cn=manager,ou=internal,dc=pnet,dc=sandyd,dc=me bindpw Me29Dakyoz8Wn2zI # The DN used for password modifications by root. #rootpwmoddn cn=admin,dc=example,dc=com # SSL options ssl on tls_reqcert never # The search scope. #scope sub #filter group (&(objectClass=group)(gidNumber=*)) map group uniqueMember member

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  • DHCP forwarding behind access list on a Cisco Catalyst

    - by Ásgeir Bjarnason
    I'm having some trouble with forwarding DHCP from a subnet behind an access list on a Cisco Catalyst 4500 switch. I'm hoping somebody can see the mistake I'm making. The subnet is defined like this: (first three octets of IP addresses and vrf name anonymized) interface Vlan40 ip vrf forwarding vrf_name ip address 10.10.10.126 255.255.255.0 secondary ip address 10.10.10.254 255.255.255.0 ip access-group 100 out ip helper-address 10.10.20.36 no ip redirects I tried turning on a VMWare machine on this subnet that was configured to use DHCP, but I never got a DHCP response and the DHCP server didn't receive a request. I tried putting the following in the access-list: access-list 100 permit udp host 10.10.10.254 host 10.10.20.36 eq bootps access-list 100 permit udp host 10.10.10.254 host 10.10.20.36 eq bootpc access-list 100 permit udp host 10.10.20.36 host 10.10.10.254 eq bootps access-list 100 permit udp host 10.10.20.36 host 10.10.10.254 eq bootpc That didn't help. Can anybody see what the problem is? I know that the DHCP server works; our whole network is running off of this DHCP server I also know that the subnet works because we have active servers running on the network The DHCP scope is already defined on the DHCP server The subnet is correctly defined on the VMWare server (already servers running on the subnet on VMWare) Edit 2012-10-19: This is solved! The subnet had formerly been defined as a /25 network, but was then expanded into a /24 network. When the DHCP scope was altered after this change it was done incorrectly; the gateway was moved to .254, the leasable IP range was in the lower half of the /24 subnet but we forgot to change the CIDR prefix from /25 into /24. This happened some 2 years ago, and we didn't need to use DHCP on this server network again until this week. Thank you MDMarra and Jason Seemann for looking at the question and trying to troubleshoot. Now I'm wondering if I should mark Jason's answer as the accepted answer (I am new to the Stack Exchange network, so I don't know the etiquette of what to do if I misstated the question like in this case).

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  • Secondary IP (eth0:0) acts like main server IP

    - by George Tasioulis
    I have a CentOS server, configured with 4 consecutive IPs: eth0 5.x.x.251 eth0:0 5.x.x.252 eth0:1 5.x.x.253 eth0:2 5.x.x.254 The problem is that all traffic goes out to the internet with eth0:0 (5.x.x.252) as the source IP, instead of eth0. # curl ifconfig.me 5.x.x.252 How can I fix this, so that all traffic goes out via eth0, ie my main IP? PS: My server is VPS running on a Xen dom0, the latter being configured in routed mode networking. Thanks in advance! Server configuration # ifconfig eth0 Link encap:Ethernet HWaddr 00:x:x:x:x:AE inet addr:5.x.x.251 Bcast:5.x.x.255 Mask:255.255.255.255 inet6 addr: fe80::x:x:x:x/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:14675569 errors:0 dropped:0 overruns:0 frame:0 TX packets:9463227 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4122016502 (3.8 GiB) TX bytes:25959110751 (24.1 GiB) Interrupt:23 eth0:0 Link encap:Ethernet HWaddr 00:x:x:x:x:AE inet addr:5.x.x.252 Bcast:5.x.x.255 Mask:255.255.255.224 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:23 eth0:1 Link encap:Ethernet HWaddr 00:x:x:x:x:AE inet addr:5.x.x.253 Bcast:5.x.x.255 Mask:255.255.255.224 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:23 eth0:2 Link encap:Ethernet HWaddr 00:x:x:x:x:AE inet addr:5.x.x.254 Bcast:5.x.x.255 Mask:255.255.255.224 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:23 # cat /etc/hosts 127.0.0.1 localhost.localdomain localhost 5.x.x.251 [fqdn] [hostname] # cat ifcfg-eth0 DEVICE=eth0 BOOTPROTO=static ONBOOT=yes IPADDR=5.x.x.251 NETMASK=255.255.255.224 SCOPE="peer 5.x.y.82" # cat ifcfg-eth0:0 DEVICE=eth0:0 BOOTPROTO=static ONBOOT=yes IPADDR=5.x.x.252 NETMASK=255.255.255.224 # cat route-eth0 ADDRESS0=0.0.0.0 NETMASK0=0.0.0.0 GATEWAY0=5.x.y.82 # netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 5.x.y.82 0.0.0.0 255.255.255.255 UH 0 0 0 eth0 5.x.x.224 0.0.0.0 255.255.255.224 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 0.0.0.0 5.x.y.82 0.0.0.0 UG 0 0 0 eth0

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  • Ubuntu-VirtualBox-LikeWiseOpen network disaster

    - by Sergio
    I've a virtual machine on VirtualBox 4.1.4 with Ubuntu 11.04. It was working perfectly, but after a reboot something really wrong happened: I wasn't able to connect to the internal network (same for NAT). $ sudo dhclient -v Internet Systems Consortium DHCP Client 4.1.1-P1 Copyright 2004-2010 Internet System Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ Error creating socket to list interfaces; Permission denied Can't get list of interfaces. The network interface is PCnet-FAST III. Additional information: $ uname -a Linux LinuxFileServer 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 i686 i386 GNU/Linux Any ideas? Thanks EDIT: $ sudo ifconfig -a eth1 Link encap:Ethernet HWaddr 08:00:27:af:f2:c7 indirizzo inet6: fe80::a00:27ff:feaf:f2c7/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisioni:0 txqueuelen:1000 Byte RX:0 (0 B) Byte TX:3870 (3.8 KB) Interrupt:10 lo Link encap:Loopback locale indirizzo inet:127.0.0.1 Maschera:255.0.0.0 indirizzo inet6: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:16 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisioni:0 txqueuelen:0 Byte RX:960 (960.0 B) Byte TX:960 (960.0 B)

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  • MSDTC - Communication with the underlying transaction manager has failed (Firewall open, MSDTC network access on)

    - by SocialAddict
    I'm having problems with my ASP.NET web forms system. It worked on our test server but now we are putting it live one of the servers is within a DMZ and the SQL server is outside of that (on our network still though - although a different subnet) I have open up the firewall completely between these two boxes to see if that was the issue and it still gives the error message "Communication with the underlying transaction manager has failed" whenever we try and use the "TransactionScope". We can access the data for retrieval it's just transactions that break it. We have also used msdtc ping to test the connection and with the amendments on the firewall that pings successfully, but the same error occurs! How do i resolve this error? Any help would be great as we have a system to go live today. Panic :) Edit: I have created a more straightforward test page with a transaction as below and this works fine. Could a nested transaction cause this kind of error and if so why would this only cause an issue when using a live box in a dmz with a firewall? AuditRepository auditRepository = new AuditRepository(); try { using (TransactionScope scope = new TransactionScope()) { auditRepository.Add(DateTime.Now, 1, "TEST-TRANSACTIONS#1", 1); auditRepository.Save(); auditRepository.Add(DateTime.Now, 1, "TEST-TRANSACTIONS#2", 1); auditRepository.Save(); scope.Complete(); } } catch (Exception ex) { Response.Write("Test Error For Transaction: " + ex.Message + "<br />" + ex.StackTrace); }

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  • Add IPv6 support to DirectAdmin server

    - by George Boot
    I just set up an new DirectAdmin, and I want to prepare it for IPv6 use. My ISP have gave me an range of IPv6 addresses that I can use. Lets say that address is 2a01:7c8:**:1f::. My neworkadapter user DHCP to resolves its IP-addresses. When i type ifoncig eth0 I get the following result: eth0 Link encap:Ethernet HWaddr 52:**:**:**:ce:f3 inet addr:37.**.**.44 Bcast:37.**.**.255 Mask:255.255.255.0 inet6 addr: 2a01:7c8:****:1f::/64 Scope:Global inet6 addr: fe80::5054:ff:fe87:cef3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:38941 errors:0 dropped:0 overruns:0 frame:0 TX packets:29439 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3779534 (3.6 MiB) TX bytes:5089379 (4.8 MiB) As you can see, I have an IPv6 address set, but I can't ping6 an IPv6 host. I get the error: connect: Network is unreachable. I decided that I needed an gateway, so I tryed to add one: ip -6 route add default via 2a01:7c8:****::1 dev eth0 (2a01:7c8:**::1 is the gateway of my ISP). But it trows an error: RTNETLINK answers: No route to host. Does somebody know what to do, and how to solve this issue? Thanks a lot!

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  • IPSec Tunnel to Amazon EC2 - Netkey, NAT, and routing problem

    - by Ernest Mueller
    Hey all, I'm working on getting an IPSec VPN working between Amazon EC2 and my on-premise. The goal is to be able to safely administer stuff, up/download data, etc. over that tunnel. I have gotten the tunnel up in openswan between a Fedora 12 instance with an elastic IP and a Cisco router that's also NATted. I think the ipsec part is OK, but I'm having trouble figuring out how to route traffic that way; there's no "ipsec0" virutal interface because on Amazon you have to use netkey and not KLIPS for the vpn. I hear iptables may be required and I'm an iptables noob. On the left (Amazon), I have a 10. network. Box 1 is privately 10.254.110.A, publically IP 184.73.168.B. Netkey tunnel is up. Box 2 is publically 130.164.26.C, privately 130.164.0.D And my .conf is: conn ni type= tunnel authby= secret left= 10.254.110.A leftid= 184.73.168.B leftnexthop= %defaultroute leftsubnet= 10.254.0.0/32 right= 130.164.26.C rightid= 130.164.0.D rightnexthop= %defaultroute rightsubnet= 130.164.0.0/18 keyexchange= ike pfs= no auto= start keyingtries= 3 disablearrivalcheck=no ikelifetime= 240m auth= esp compress= no keylife= 60m forceencaps= yes esp= 3des-md5 I added a route to box 1 (130.164.0.0/18 via 10.254.110.A dev eth0) but that doesn't do it for predictable reasons, when I traceroute the traffic's still going "around" and not through the vpn. Routing table: 10.254.110.0/23 dev eth0 proto kernel scope link src 10.254.110.A 130.164.0.0/18 via 10.254.110.178 dev eth0 src 10.254.110.A 169.254.0.0/16 dev eth0 scope link metric 1002 Anyone know how to do the routing with a netkey ipsec tunnel where both sides are NATted? Thanks...

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  • Debian/Ubuntu - No network connection

    - by leviathanus
    I have a very weird situation on my Ubuntu 12.04 LTS Server. I can not access (ping) my gateway, although I believe my config is ok - I attach the outputs. Any hints where to look? (I changed the beginning of the IP to something different, just obfuscation) ping 5.9.10.129 PING 5.9.10.129 (5.9.10.129) 56(84) bytes of data. From 5.9.10.129 (5.9.10.129) icmp_seq=2 Destination Host Unreachable From 5.9.10.129 (5.9.10.129) icmp_seq=3 Destination Host Unreachable From 5.9.10.129 (5.9.10.129) icmp_seq=4 Destination Host Unreachable uname -r 3.2.0-29-generic ifconfig eth0 eth0 Link encap:Ethernet HWaddr 3c:97:0e:0e:54:d7 inet addr:5.9.10.142 Bcast:5.9.10.159 Mask:255.255.255.224 inet6 addr: fe80::8e70:5aff:feda:c4ac/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1216 errors:0 dropped:0 overruns:0 frame:0 TX packets:490 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:107470 (107.4 KB) TX bytes:34344 (34.3 KB) Interrupt:17 Memory:d2500000-d2520000 ip route default via 5.9.10.129 dev eth0 metric 100 5.9.10.128/27 via 5.9.10.129 dev eth0 5.9.10.128/27 dev eth0 proto kernel scope link src 5.9.10.142 route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 5.9.10.129 0.0.0.0 UG 1000 0 0 eth0 5.9.10.128 5.9.10.129 255.255.255.224 UG 0 0 0 eth0 5.9.10.128 0.0.0.0 255.255.255.224 U 0 0 0 eth0 iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination UPD: Eric, this is how routing information looks on a working server: 0.0.0.0 78.47.198.49 0.0.0.0 UG 100 0 0 eth0 78.47.198.48 78.47.198.49 255.255.255.240 UG 0 0 0 eth0 78.47.198.48 0.0.0.0 255.255.255.240 U 0 0 0 eth0 As I understand it, Hetzner tries to ensure security by this, so I can not take over an IP by changing my MAC. But this is another server, which has another netmask (255.255.255.240) UPD2: BatchyX, on the working server: 78.47.198.49 dev eth0 src 78.47.198.60 cache on the broken: 5.9.10.129 dev eth0 src 5.9.10.142 cache

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  • IPSec Tunnel to Amazon EC2 - Netkey, NAT, and routing issue

    - by Ernest Mueller
    I'm working on getting an IPSec VPN working between Amazon EC2 and my on-premise. The goal is to be able to safely administer stuff, up/download data, etc. over that tunnel. I have gotten the tunnel up in openswan between a Fedora 12 instance with an elastic IP and a Cisco router that's also NATted. I think the ipsec part is OK, but I'm having trouble figuring out how to route traffic that way; there's no "ipsec0" virutal interface because on Amazon you have to use netkey and not KLIPS for the vpn. I hear iptables may be required and I'm an iptables noob. On the left (Amazon), I have a 10. network. Box 1 is privately 10.254.110.A, publically IP 184.73.168.B. Netkey tunnel is up. Box 2 is publically 130.164.26.C, privately 130.164.0.D And my .conf is: conn ni type= tunnel authby= secret left= 10.254.110.A leftid= 184.73.168.B leftnexthop= %defaultroute leftsubnet= 10.254.0.0/32 right= 130.164.26.C rightid= 130.164.0.D rightnexthop= %defaultroute rightsubnet= 130.164.0.0/18 keyexchange= ike pfs= no auto= start keyingtries= 3 disablearrivalcheck=no ikelifetime= 240m auth= esp compress= no keylife= 60m forceencaps= yes esp= 3des-md5 I added a route to box 1 (130.164.0.0/18 via 10.254.110.A dev eth0) but that doesn't do it for predictable reasons, when I traceroute the traffic's still going "around" and not through the vpn. Routing table: 10.254.110.0/23 dev eth0 proto kernel scope link src 10.254.110.A 130.164.0.0/18 via 10.254.110.178 dev eth0 src 10.254.110.A 169.254.0.0/16 dev eth0 scope link metric 1002 Anyone know how to do the routing with a netkey ipsec tunnel where both sides are NATted? Thanks...

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  • Routing subnet over GRE tunnel

    - by eMgz
    Hi, Im trying to configure a GRE over IPSec connection between two subnets. The IPSec tunnel is opened and now I want to add a GRE tunnel over it: ip tunnel add GRE01 mode gre remote 10.244.0.1 local 10.244.245.32 ttl 255 ip link set GRE01 up ip addr add 10.244.248.126 dev GRE01 ip route add 10.244.248.125 dev GRE01 Now I have an interface GRE01 (ifconfig): GRE10 Link encap:UNSPEC HWaddr <h_addr> inet addr:10.244.248.126 P-t-P:10.244.248.126 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MTU:1476 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) And the following routes (ip route list): 10.244.248.125 dev GRE10 scope link <pub_subnet> dev eth0 proto kernel scope link src <pub_ip> default via <pub_gw> dev eth0 metric 100 As a last step, I need now to route my subnet over the tunnel: ip route add 10.245.1.224/28 10.244.248.125 However, I am getting the error Error: either "to" is duplicate, or "10.244.248.125" is a garbage. So, what I didn't understand is why I can't route my subnet over the tunnel, once the only route I have there says that it should route the tunnel IP over the GRE01 interface. Any hint? Thanks.

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  • Amazon EC2 instance missing Network Interface

    - by Sergiks
    I am running Linux on a t1.micro instance at Amazon EC2. Once I noticed bruteforce ssh login attemtps from a certain IP, after litle Googling I issued the two following commands (other ip): iptables -A INPUT -s 202.54.20.22 -j DROP iptables -A OUTPUT -d 202.54.20.22 -j DROP Either this, or maybe some other actions like yum upgrade perhaps, caused the follwing fiasco: after rebooting the server, it came up without the Network Interface! I only can connect to it through AWS Management Console JAVA ssh client - via local 10.x.x.x address. Console's Attach Network Interface as well as Detach.. are greyed out for this instance. Network Interfaces item at the left does not offer any Subnets to choose from, to create a new N.I. Please advice, how can I recreate a Network Interface for the instance? Upd. The instance is not accessible from outside: cannot be pinged, SSH'ed or connected by HTTP on port 80. Here's the ifconfig output: eth0 Link encap:Ethernet HWaddr 12:31:39:0A:5E:06 inet addr:10.211.93.240 Bcast:10.211.93.255 Mask:255.255.255.0 inet6 addr: fe80::1031:39ff:fe0a:5e06/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1426 errors:0 dropped:0 overruns:0 frame:0 TX packets:1371 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:152085 (148.5 KiB) TX bytes:208852 (203.9 KiB) Interrupt:25 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) What is also unusual: a new micro instance I created from scratch, with no relation to the troubled one, was not pingable too.

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  • ssh from 1 ubuntu box to another ubuntu box

    - by michael
    Hi, I have 2 ubuntu boxes in a WiFi network. Below is the 'ifconfig' of my destination machine. But in my source machine, I tried 'ssh 192.168.1.2' I get connection refused. $ ifconfig eth0 Link encap:Ethernet HWaddr c8:0a:a9:4d:d6:6a UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:35 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:4508 errors:0 dropped:0 overruns:0 frame:0 TX packets:4508 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:330441 (330.4 KB) TX bytes:330441 (330.4 KB) wlan0 Link encap:Ethernet HWaddr 00:23:14:32:e8:dc inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::223:14ff:fe32:e8dc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:319828 errors:0 dropped:0 overruns:0 frame:0 TX packets:618371 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:30642011 (30.6 MB) TX bytes:921522542 (921.5 MB) How to set up so that I can ssh from 1 box to another?

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