I recently deployed a new installation at one customer with 2 linux servers and 2 Oracle SE2 databases with dbvisit StandbyMP v11 disaster recovery solution. I prepared the standby database using RMAN duplication method, and then just wanted to create the dbvisit DDC configuration using CLI command. I had to troubleshoot one error, and wanted to share quickly the solution hoping it will help you save some time if you are facing the same problem.<\/p>\n\n\n\n
I used dbvctl command to create the DDC configuration. Using the GUI generated exactly the same problem.<\/p>\n\n\n\n
\noracle@srv01:\/u01\/app\/dbvisit\/standbymp\/oracle\/ [MYDB] .\/dbvctl -o setup\n\n\n=========================================================\n\n Dbvisit Standby Database Technology (11.4.1)\n http:\/\/www.dbvisit.com\n\n=========================================================\n\n=>dbvctl only needs to be run on the primary server.\n\nIs this the primary server? [Yes]:\nThe following Dbvisit Database configuration (DDC) file(s) found on this\nserver:\n\n DDC\n ===\n1) Create New DDC\n2) Cancel\n\nPlease enter choice [] : 1\n\nIs this correct? [Yes]:\n\n=========================================================\nDbvisit Standby setup begins.\n=========================================================\nThe following Oracle instance(s) have been found on this server:\n\n SID ORACLE_HOME\n === ===========\n1) MYDB \/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\/\n2) Enter own ORACLE_SID and ORACLE_HOME\nPlease enter choice [] : 1\n\nIs this correct? [Yes]:\n=>ORACLE_SID will be: MYDB\n=>ORACLE_HOME will be: \/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\/\n\n<<<>>>\n\nPID:434403\nTRACEFILE:dbvisit_install.log\nSERVER:srv01\nERROR_CODE:808\nDatabase in unknown mode (94). Setup cannot proceed.\n>>>> Dbvisit Standby terminated <<<<\n<\/pre>\n<\/br>\n\n\n\nI faced following error:<\/p>\n\n\n\n
\nERROR_CODE:808\nDatabase in unknown mode (94). Setup cannot proceed.\n>>>> Dbvisit Standby terminated <<<<\n<\/pre>\n<\/br>\n\n\n\nTroubleshooting<\/h2>\n\n\n\n
I troubleshooted dbvisit_install.log log and could find following errors:<\/p>\n\n\n\n
\noracle@srv01:\/u01\/app\/dbvisit\/standbymp\/oracle\/log\/ [MYDB] cat dbvisit_install.log\n...\n...\n...\n4472 20231214 10:56:04 main::cmn_get_rooh_oraenv: ORACLE_BASE_HOME =\/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\/\n4472 20231214 10:56:04 main::cmn_get_rooh_oraenv: ORACLE_BASE_CONFIG=\/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\/\n...\n...\n...\n59 20231214 10:18:36 main::ora_db_connect: connection failed:ORA-12547: TNS:lost contact (DBD ERROR: OCIServerAttach)\n59 20231214 10:18:36 main::ora_exec_sql: end: error_code=12547 error=ORA-12547: TNS:lost contact (DBD ERROR: OCIServerAttach)\n...\n...\n...\n<\/pre>\n<\/br>\n\n\n\nIt seems dbvisit could not access the database through the Oracle Net Services.<\/p>\n\n\n\n
But I checked the listener configuration, and the database services were correctly registered in the listener. I could even successfully test a connection to the database through the listener using sqlplus.<\/p>\n\n\n\n
Solution<\/h2>\n\n\n\n
Doing more troubleshooting, I could realise that the problem was coming from the oratab. The Oracle SID was configured with appropriate ORACLE_HOME but having a “\/” at the end.<\/p>\n\n\n\n
\noracle@srv01:\/u01\/app\/dbvisit\/standbymp\/oracle\/log\/ [MYDB] cat \/etc\/oratab\n#\n\n\n\n# This file is used by ORACLE utilities. It is created by root.sh\n# and updated by either Database Configuration Assistant while creating\n# a database or ASM Configuration Assistant while creating ASM instance.\n\n# A colon, ':', is used as the field terminator. A new line terminates\n# the entry. Lines beginning with a pound sign, '#', are comments.\n#\n# Entries are of the form:\n# $ORACLE_SID:$ORACLE_HOME::\n#\n# The first and second fields are the system identifier and home\n# directory of the database respectively. The third field indicates\n# to the dbstart utility that the database should , \"Y\", or should not,\n# \"N\", be brought up at system boot time.\n#\n# Multiple entries with the same $ORACLE_SID are not allowed.\n#\n#\nMYDB:\/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\/:Y\n<\/pre>\n<\/br>\n\n\n\nI modified the oratab accordingly on both primary and standby side:<\/p>\n\n\n\n
\noracle@srv01:\/u01\/app\/dbvisit\/standbymp\/oracle\/log\/ [MYDB] vi \/etc\/oratab\n\noracle@srv01:\/u01\/app\/dbvisit\/standbymp\/oracle\/log\/ [MYDB] cat \/etc\/oratab\n#\n\n\n\n# This file is used by ORACLE utilities. It is created by root.sh\n# and updated by either Database Configuration Assistant while creating\n# a database or ASM Configuration Assistant while creating ASM instance.\n\n# A colon, ':', is used as the field terminator. A new line terminates\n# the entry. Lines beginning with a pound sign, '#', are comments.\n#\n# Entries are of the form:\n# $ORACLE_SID:$ORACLE_HOME::\n#\n# The first and second fields are the system identifier and home\n# directory of the database respectively. The third field indicates\n# to the dbstart utility that the database should , \"Y\", or should not,\n# \"N\", be brought up at system boot time.\n#\n# Multiple entries with the same $ORACLE_SID are not allowed.\n#\n#\nMYDB:\/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0:Y\n<\/pre>\n<\/br>\n\n\n\nAnd could then successfully create the DDC configuration:<\/p>\n\n\n\n
\noracle@srv01:~\/ [MYDB] cd \/u01\/app\/dbvisit\/standbymp\/oracle\/\n\noracle@srv01:\/u01\/app\/dbvisit\/standbymp\/oracle\/ [MYDB] .\/dbvctl -o setup\n\n\n=========================================================\n\n Dbvisit Standby Database Technology (11.4.1)\n http:\/\/www.dbvisit.com\n\n=========================================================\n\n=>dbvctl only needs to be run on the primary server.\n\nIs this the primary server? [Yes]:\nThe following Dbvisit Database configuration (DDC) file(s) found on this\nserver:\n\n DDC\n ===\n1) Create New DDC\n2) Cancel\n\nPlease enter choice [] : 1\n\nIs this correct? [Yes]:\n\n=========================================================\nDbvisit Standby setup begins.\n=========================================================\nThe following Oracle instance(s) have been found on this server:\n\n SID ORACLE_HOME\n === ===========\n1) MYDB \/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\n2) Enter own ORACLE_SID and ORACLE_HOME\nPlease enter choice [] : 1\n\nIs this correct? [Yes]:\n=>ORACLE_SID will be: MYDB\n=>ORACLE_HOME will be: \/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\n\n------------------------------------------------------------------------------\nEnter the primary server name.\nNote: The hostname is case sensitive on UNIX based systems.\n=>SOURCE is [srv01]:\nYour input: srv01\n\nIs this correct? [Yes]:\nChoice is srv01\n\n------------------------------------------------------------------------------\nPlease enter a filesystem directory that Dbvisit Standby use to store (archive)\nlog files. This directory is not the same as the database recovery area or\narchive destinations and should not be located in these areas.\nThe ARCHSOURCE directory is located on the primary server and will become the\nARCHDEST location when the primary database is converted to a standby database\nduring a Graceful Switchover operation.\nThis directory will ONLY contain (archive) log files related to this database.\nIt should not contain any other (non archive log) files.\nPlease ensure that this directory exists on\n\n=>ARCHSOURCE is [\/u01\/app\/oracle\/dbvisit_arch\/MYDB_SITE1]: \/u90\/dbvisit_arch\/MYDB\nYour input: \/u90\/dbvisit_arch\/MYDB\n\nIs this correct? [Yes]:\nChoice is \/u90\/dbvisit_arch\/MYDB\n\n------------------------------------------------------------------------------\nSpecify the DBVNET port number on the primary server. If unsure leave at\ndefault\n=>NETPORT is [7890]:\nYour input: 7890\n\nIs this correct? [Yes]:\nChoice is 7890\n\n------------------------------------------------------------------------------\nEnter the standby database hostname.\n\nIf the standby database will be Oracle RAC enabled:\nEnter the the Virtual Hostname (linked to a Virtual IP) for standby database.\nThis virtual hostname is attached to a VIP that will be able to move between\nthe RAC nodes. Dbvisit Standby will only run on the server where this virtual\nhostname (VIP) resource is running.\nThe Virtual Hostname (and VIP) should be configured as a resouce in clusterware\nand must be enabled and started on one of the nodes before yo continue with the\nsetup. If you are not using a Virtual Hostname (Highly Recommended), Dbvisit\nStandby can only be configured to run on one dedicated node in the RAC\nconfiguration - specify the hosts name here if you do not have a Virtual\nHostname (attached to VIP) for the cluster configured.\nFor non-RAC configurations specify the standby database server name here.\n\n=>DESTINATION is []: srv02\nYour input: srv02\n\nIs this correct? [Yes]:\nChoice is srv02\n\n------------------------------------------------------------------------------\nSpecify the DBVNET port number on the standby server. If unsure leave at\ndefault\n=>NETPORT_DR is [7890]:\nYour input: 7890\n\nIs this correct? [Yes]:\nChoice is 7890\n\n------------------------------------------------------------------------------\nEnter Dbvisit Standby installation directory on the standby server\n=>DBVISIT_BASE_DR is [\/u01\/app\/dbvisit\/standbymp]:\nYour input: \/u01\/app\/dbvisit\/standbymp\n\nIs this correct? [Yes]:\nChoice is \/u01\/app\/dbvisit\/standbymp\n\n------------------------------------------------------------------------------\nEnter ORACLE_HOME directory on the standby server\n=>ORACLE_HOME_DR is [\/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0]:\nYour input: \/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\n\nIs this correct? [Yes]:\nChoice is \/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\n\n------------------------------------------------------------------------------\nEnter DB_UNIQUE_NAME on the standby server\n=>DB_UNIQUE_NAME_DR is [MYDB_SITE1]: MYDB_SITE2\nYour input: MYDB_SITE2\n\nIs this correct? [Yes]:\nChoice is MYDB_SITE2\n\n------------------------------------------------------------------------------\nPlease enter the directory where Dbvisit Standby will transfer the (archive)\nlog files to on standby server. This directory is not the same as the\ndatabase recovery area or archive destinations and should not be located in\nthese areas.\nThis directory should ONLY contain (archive) log files related to this\ndatabase. It should not contain any other (non archive log) files.\nPlease ensure that this directory exists on the standby server\n\n=>ARCHDEST is [\/u90\/dbvisit_arch\/MYDB]:\nYour input: \/u90\/dbvisit_arch\/MYDB\n\nIs this correct? [Yes]:\nChoice is \/u90\/dbvisit_arch\/MYDB\n\n------------------------------------------------------------------------------\nEnter ORACLE_SID on the standby server\n=>ORACLE_SID_DR is [MYDB]:\nYour input: MYDB\n\nIs this correct? [Yes]:\nChoice is MYDB\n\n------------------------------------------------------------------------------\nEnter ASM instance name on the standby server, if your standby is using ASM.\nIf you are not using ASM on the standby or standby is ACFS leave the value\nnull.\n=>ORACLE_SID_ASM_DR is []:\n\nIs this correct? [Yes]:\nChoice is null\n\n------------------------------------------------------------------------------\nPlease specify the name of the Dbvisit Database configuration (DDC) file.\nThe DDC file is a plain text file that contains all the Dbvisit Standby\nsettings.\n=>ENV_FILE is [MYDB_SITE1]: MYDB\nYour input: MYDB\n\nIs this correct? [Yes]:\nChoice is MYDB\n\n------------------------------------------------------------------------------\nProvide license key.\n=>LICENSE_KEY is []: *****-*****-*****-*****-*****-*****-*****\nYour input: *****-*****-*****-*****-*****-*****-*****\n\nIs this correct? [Yes]:\nChoice is *****-*****-*****-*****-*****-*****-*****\n\n------------------------------------------------------------------------------\n\n\nBelow are the list of configuration variables provided during the setup\nprocess:\n\nConfiguration Variable Value Provided\n====================== ==============\nORACLE_SID MYDB\nORACLE_HOME\n\/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\n\nSOURCE srv01\nARCHSOURCE \/u90\/dbvisit_arch\/MYDB\nNETPORT 7890\nDESTINATION srv02\nNETPORT_DR 7890\nDBVISIT_BASE_DR \/u01\/app\/dbvisit\/standbymp\nORACLE_HOME_DR\n\/u01\/app\/oracle\/product\/19_20_0_0_RU230718_v0\nDB_UNIQUE_NAME_DR MYDB_SITE2\nRAC_DR N\nARCHDEST \/u90\/dbvisit_arch\/MYDB\nORACLE_SID_DR MYDB\nENV_FILE MYDB\nLICENSE_KEY *****-*****-*****-*****-*****-*****-*****\n\nAre these variables correct? [Yes]:\n\n>>> Dbvisit Database configuration (DDC) file MYDB created.\n\n>>> Dbvisit Database repository (DDR) MYDB created.\n Repository Version 11.0\n Software Version 11.0\n Repository Status VALID\n\n>>> Created a matching configuration in the Control Center.\n\nPID:5554\nTRACE:dbvisit_install.log\n<\/pre>\n<\/br>\n\n\n\nConclusion<\/h2>\n\n\n\n
Make sure your ORACLE_HOME value in the oratab is not finishing with a “\/”. I was already facing the same problem with Oracle Data Guard configuration having DGMGRL static entry in the listener that were configured with a ORACLE_HOME value finishing with a “\/”.<\/p>\n","protected":false},"excerpt":{"rendered":"
I recently deployed a new installation at one customer with 2 linux servers and 2 Oracle SE2 databases with dbvisit StandbyMP v11 disaster recovery solution. I prepared the standby database using RMAN duplication method, and then just wanted to create the dbvisit DDC configuration using CLI command. I had to troubleshoot one error, and wanted […]<\/p>\n","protected":false},"author":48,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[59],"tags":[372,790,3208],"type_dbi":[],"class_list":["post-30000","post","type-post","status-publish","format-standard","hentry","category-oracle","tag-dbvisit","tag-disaster-recovery","tag-oracle-se2"],"acf":[],"yoast_head":"\n
dbvisit StandbyMP with Oracle SE2 - ERROR_CODE:808 Database in unknown mode (94). Setup cannot proceed. - dbi Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dbi-services.com\/blog\/dbvisit-standbymp-with-oracle-se2-error_code808-database-in-unknown-mode-94-setup-cannot-proceed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"dbvisit StandbyMP with Oracle SE2 - ERROR_CODE:808 Database in unknown mode (94). Setup cannot proceed.\" \/>\n<meta property=\"og:description\" content=\"I recently deployed a new installation at one customer with 2 linux servers and 2 Oracle SE2 databases with dbvisit StandbyMP v11 disaster recovery solution. 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