When i am connect database through toad,one error occured. ORA-12514: TNS:listener does not currently know of service requested in connect descriptor. plz help me thanks advance.............

2316

ORA-16516: The current state is invalid for the attempted operation.

8062

IMP-00096: Warning: Skipping table "string"."string" because type synonym "string"."string" cannot be created

1236

NZE-28868: Peer certificate chain check failed.

2263

ORA-26030: index string.string had string partitions made unusable due to:

1558

ORA-26079: file "string" is not part of table string.string

1518

In my project I am using star schema and only diimension tables are loaded and not fact tables any one can help me why it is happening? Plase guide me.

2325

ORA-26082: load of overlapping segments on table string.string is not allowed

1376

invalid quantity specification negative quantity are not allowed for this item please check this item definition quantity

2857

ORA-26076: cannot set or reset value after direct path structure is allocated

1472

NZE-28890: Entrust Login Failed

1408

ORA-26029: index string.string partition string initially in unusable state

1711

if the lengths of two wires are same and the area of cross sections is 4:7 then what will be the ratio of current passing through these wires

2231

IMP-00060: Warning: Skipping table "string"."string" because object type "string"."string" does not exist or has different identifier

2620

ORA-26094: stream format error: input column overflow

2248