The answer is that the database connection is not properly established, or the session is in a bad state. This is the most likely cause because the “SAP cannot connect to Oracle RDS” error typically arises when a SQL statement is executed without being properly parsed, which occurs when the application server’s connection to the Oracle RDS instance is broken, idle, or in an invalid session state. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your ability to differentiate between database connectivity issues and other common pitfalls like insufficient memory or network misconfigurations; a frequent trap is assuming network problems are the root cause, but the error message itself points to a session or connection failure, not a transport layer issue. Remember the memory tip: “Parse before you execute, or the session will be moot”—if the SAP application server cannot establish a valid database session, parsing fails, leading directly to this error.
PAS-C01 Operations and Maintenance Practice Question
This PAS-C01 practice question tests your understanding of operations and maintenance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
Error log from SAP application server:
[ERROR] DBMS: SQL error: 1003 - 'ORA-01003: no statement parsed'
[ERROR] DBMS: SQL error: 1003 - 'ORA-01003: no statement parsed'
[ERROR] DBMS: SQL error: 1003 - 'ORA-01003: no statement parsed'
An SAP application server repeatedly logs the error above. The database is an Oracle RDS instance. What is the most likely cause of this error?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The database connection is not properly established, or the session is in a bad state.
Option A is correct because the error indicates that a SQL statement was not parsed before execution, often due to a connection issue or session state. Option B is wrong because insufficient memory usually causes different errors. Option C is wrong because the application server is not the database. Option D is wrong because network connectivity would cause different errors.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The SAP application server is misconfigured.
Why it's wrong here
The error is from the application server but indicates a database issue.
✓
The database connection is not properly established, or the session is in a bad state.
Why this is correct
The error 'no statement parsed' typically occurs when a SQL statement is executed without a valid parse call, often due to connection issues.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
✗
There is a network connectivity issue between the application server and the database.
Why it's wrong here
Network issues would typically cause timeout or connection refused errors.
✗
The Oracle database is out of memory.
Why it's wrong here
Out of memory errors are different, e.g., ORA-04031.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PAS-C01 ACL questions on filtering logic and placement.
Operations and Maintenance — This question tests Operations and Maintenance — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The database connection is not properly established, or the session is in a bad state. — Option A is correct because the error indicates that a SQL statement was not parsed before execution, often due to a connection issue or session state. Option B is wrong because insufficient memory usually causes different errors. Option C is wrong because the application server is not the database. Option D is wrong because network connectivity would cause different errors.
What should I do if I get this PAS-C01 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PAS-C01 ACL questions on filtering logic and placement.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Standard ACLs match source addresses.
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