* First pass of changing netdata to Netdata
* Second pass of netdata -> Netdata
* Starting work on netdata with no whitespace after
* Pass for netdata with no whitespace at the end
* Pass for netdata with no whitespace at the front
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##### Summary
Fixes: #1996
##### Component Name
python.d.plugin oracledb module
##### Additional Information
#### Used queries:
- [system metrics]:
```sql
SELECT
metric_name,
value
FROM
gv$sysmetric
ORDER BY
begin_time
```
<details><summary>collected metrics</summary>
<p>
| name|
|---|
| average_active_sessions |
| session_count |
| session_limit_percent |
| logons_per_sec |
| physical_reads_per_sec |
| physical_writes_per_sec |
| disk_sort_per_sec |
| long_table_scans_per_sec |
| database_wait_time_ratio |
| shared_pool_free_percent |
| memory_sorts_ratio |
| sql_service_response_time |
| user_rollbacks_per_sec |
| enqueue_timeouts_per_sec |
| buffer_cache_hit_ratio |
| cursor_cache_hit_ratio |
| library_cache_hit_ratio |
| row_cache_hit_ratio |
| global_cache_blocks_corrupted |
| global_cache_blocks_lost |
</p>
</details>
</br>
- [tablespace]
```sql
SELECT
m.tablespace_name,
m.used_space * t.block_size AS used_bytes,
m.tablespace_size * t.block_size AS max_bytes,
m.used_percent
FROM
dba_tablespace_usage_metrics m
JOIN dba_tablespaces t ON m.tablespace_name = t.tablespace_name
```
<details><summary>collected metrics</summary>
<p>
| name|
|---|
| tablespace_size |
| tablespace_used |
| tablespace_used_in_percent |
</p>
</details>
</br>
- [activities count]
```sql
SELECT
name,
value
FROM
v$sysstat
WHERE
name IN (
'parse count (total)',
'execute count',
'user commits',
'user rollbacks'
)
```
<details><summary>collected metrics</summary>
<p>
| name|
|---|
| activity_parse_count |
| activity_execute_count |
| activity_user_commits |
| activity_user_rollbacks |
</p>
</details>
</br>
- wait time
```sql
SELECT
n.wait_class,
round(m.time_waited / m.INTSIZE_CSEC, 3)
FROM
v$waitclassmetric m,
v$system_wait_class n
WHERE
m.wait_class_id = n.wait_class_id
AND n.wait_class != 'Idle'
```
