proc - Connect to remote oracle database - oracle

Question

I'm trying to connect to oracle DB on remote server:
userid = getenv("ORACLE_USER");
oracle_password = getenv("ORACLE_USER_PASSWORD");
db_name = getenv("DB_NAME");
EXEC SQL CONNECT :userid IDENTIFIED BY :oracle_password USING :db_name;
I get an error: ORA-01034.
I'd be happy for help. Thanks.

Answer 1

EXEC SQL BEGIN DECLARE SECTION;
userid VARCHAR(50);
oracle_password VARCHAR(50);
db_name VARCHAR(50);
EXEC SQL END DECLARE SECTION;
main()
{
userid.arr = getenv("ORACLE_USER");
userid.len = strlen(userid.arr);
oracle_password.arr = getenv("ORACLE_USER_PASSWORD");
oracle_password.len = strlen(oracle_password.arr);
db_name.arr = getenv("DB_NAME");
db_name.len = strlen(db_name.arr);
EXEC SQL CONNECT :userid IDENTIFIED BY :oracle_password USING :db_name;
if (sqlca.sqlcode==0)
{
prnitf("sucessful");
}
else
{
printf("failed");
return;
}
}
Hope it may be useful to you.

Answer 2

You will get ORA-01034 error when the database was not started up.
Possible causes include the following:
The SGA requires more space than was allocated for it.
The operating-system variable pointing to the instance is improperly defined.
Following line may resolve you issues
Check out link

Answer 3

First of all, use the alternative format:
EXEC SQL CONNECT :usr_pwd;
where the host variable usr_pwd contains your username and password separated by a slash character (/).
Then for usr_pwd attach remote server info:
"user/pwd#(DESCRIPTION = (ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = xx.xx.xx.xx)(PORT = xxxx)))(CONNECT_DATA = (SERVICE_NAME = xxxxx)))"
For fast verification, you can use sqlplus to see if it connects first then plug in your code and compile:
sqlplus user/pwd#(DESCRIPTION = (ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = xx.xx.xx.xx)(PORT = xxxx)))(CONNECT_DATA = (SERVICE_NAME = xxxxx)))