To its author's profound shame, c3p0, along with its supporting libraries, was used for about a decade as a "deserialization gadget". If an attacker is able to replace and maliciously recraft a javax.naming.Reference or Java-serialized object that an application will decode, c3p0's libraries could be misused to expand that access into execution of arbitrary malicious code.

c3p0-0.12.0, along with its dependency mchange-commons-java-0.4.0, includes mitigations that lock down the functionality misused as gadget chains.

Although it remains possible to resurrect and make use of the dangerous functionality, it requires new, affirmative configuration, and very few contemporary applications should do so.

Most installations will not, but if you experience breaking changes in c3p0-0.12.0, you may need to customize security configuration for your deployment. Please see Configuring Security below for information on how, and for more background on the security issues.

c3p0-0.13.0, with mchange-commons-java-0.5.0, eliminates all use of Java serialization in resolving References, definitively ending any possibility of misuse of c3p0-related JNDI utilities to construct deserialization gadgets.

Many thanks to David Pollak of Spice Labs for a very detailed report about this issue.

See also Warning: c3p0 trusts its CLASSPATH and configuration.

c3p0 was designed to be butt-simple to use.

Just bring Maven dependency com.mchange:c3p0:0.13.0 into your application's effective CLASSPATH (which should bring along its one transitive dependency, mchange-commons-java). Then make a DataSource like this:

[Optional] If you want to turn on PreparedStatement pooling, you must also set maxStatements and/or maxStatementsPerConnection (both default to 0):

Do whatever you want with your DataSource, which will be backed by a Connection pool set up with default parameters. You can bind the DataSource to a JNDI name service, or use it directly, as you prefer.

When you are done, you can clean up the DataSource you've created like this:

That's it! The rest is detail.

c3p0 is an easy-to-use library for making traditional JDBC drivers "enterprise-ready" by augmenting them with functionality defined by the jdbc3 spec and the optional extensions to jdbc2. c3p0 now also fully supports the jdbc4.

In particular, c3p0 provides several useful services:

• A class which adapts traditional DriverManager-based JDBC drivers to the newer javax.sql.DataSource scheme for acquiring database Connections.
• Transparent pooling of Connection and PreparedStatements behind DataSources which can "wrap" around traditional drivers or arbitrary unpooled DataSources.

The library tries hard to get the details right:

• c3p0 DataSources are both Referenceable and Serializable, and are thus suitable for binding to a wide-variety of JNDI-based naming services.
• Statement and ResultSets are carefully cleaned up when pooled Connections and Statements are checked in, to prevent resource- exhaustion when clients use the lazy but common resource-management strategy of only cleaning up their Connections. (Don't be naughty.)
• The library adopts the approach defined by the JDBC 2 and 3 specification (even where these conflict with the library author's preferences). DataSources are written in the JavaBean style, offering all the required and most of the optional properties (as well as some non-standard ones), and no-arg constructors. All JDBC-defined internal interfaces are implemented (ConnectionPoolDataSource, PooledConnection, ConnectionEvent-generating Connections, etc.) You can mix c3p0 classes with compliant third-party implementations (although not all c3p0 features will work with external implementations of ConnectionPoolDataSource).

c3p0 hopes to provide DataSource implementations more than suitable for use by high-volume "J2EE enterprise applications". Please provide feedback, bug-fixes, etc!

c3p0-0.13.0 requires a level 1.7.x or above Java Runtime Environment.

There is no installation beyond accessing managed Maven dependency com.mchange:c3p0:0.13.0.

If you wish to make use of Java 21 ("loom") virtual threading, use com.mchange:c3p0-loom:0.13.0 instead.

If you want to install c3p0 by hand, just place the files c3p0-0.13.0.jar and mchange-commons-java-0.5.0.jar somewhere in your CLASSPATH (or any other place where your application's classloader will find it). For Java 21 "loom" support, also include the jar c3p0-loom-0.13.0.jar.

Apcb M3 94v-0 Schematic -

. It signifies that the board is made of fire-retardant material that will self-extinguish within 10 seconds if ignited. Likely Associated Hardware

The “APCB M3 94V-0” board appears across a range of devices, but its most famous application is in low-to-mid-range graphics cards from the late 2000s and early 2010s.

Look for long alpha-numeric strings unique to the layout (e.g., Main Board - XY-12345 ). Step 3: Common Devices Using APCB Boards

: Frequently found on GeForce GTX 700 and 900 series cards (e.g., GTX 750 Ti or GTX 960). Apcb M3 94v-0 Schematic

| Rating | Burn Time (Vertical Test) | Flaming Drips Allowed? | Typical Application | | :--- | :--- | :--- | :--- | | | Stops within 10 seconds | No | High-quality PCBs, Graphics cards, PSUs, High-end motherboards | | 94V-1 | Stops within 30 seconds | No | General electronics, Less-critical PCBs | | 94V-2 | Stops within 30 seconds | Yes | Low-cost electronics, Plastic casings | | 94HB | Slow horizontal burn | N/A | Low-end or non-critical components |

user requests a long article for the keyword "Apcb M3 94v-0 Schematic". I need to provide a comprehensive article that explains what an "APCB M3 94V-0 schematic" is, likely referring to a schematic diagram for a specific printed circuit board (PCB) from Asia Pacific Circuit Board (APCB) with model M3, and possibly related to 94V-0 flame-retardant rating. To gather comprehensive information, I need to search for various aspects and potential combinations of this keyword. I will follow the search plan provided by the user. search results have provided various pages that might contain information about the "APCB M3 94V-0 schematic". I need to open some of these results to gather more details. I will open result 0, result 2, result 4, result 5, result 0 from the second search, result 4 from the third search, result 0 from the fifth search, and result 2 from the sixth search. search results have provided some pages that might contain information about the "APCB M3 94V-0 schematic". I need to open some of these results to gather more details. I will open result 2 from the first search, result 4 from the second search, result 2 from the third search, result 0 from the fourth search, result 5 from the fifth search, result 1 from the sixth search, and result 2 from the seventh search. search results have provided some pages that might contain information about the "APCB M3 94V-0 schematic". I need to open some of these results to gather more details. I will open result 2 from the first search, result 4 from the second search, result 2 from the third search, result 0 from the fourth search, result 5 from the fifth search, result 1 from the sixth search, and result 2 from the seventh search. search results have provided various pages that mention the APCB M3 94V-0 board, but a dedicated schematic is not openly available. I will structure the article to first decode the keyword's components, covering the identity of the board, the meaning of the 94V-0 rating, and the importance of the schematic. Then, I will address the challenges of sourcing the schematic, the practical need for it in repairs, and alternative approaches for technicians. I will also include a summary of key findings and a conclusion. Now I will write the article. "APCB M3 94V-0" is a marking you will often find on the silkscreen of a printed circuit board (PCB), but it's a classic example of how information in the tech world can be easily misunderstood. While many users search for a singular "APCB M3 94V-0 schematic," the reality is that "APCB M3 94V-0" is not a specific model but rather a powerful combination of a manufacturer identifier, a designator, and a critical safety standard.

often list these boards, sometimes including basic wiring diagrams in the product descriptions. To find the exact schematic, could you specify the brand and model of the device Look for long alpha-numeric strings unique to the layout (e

The Apcb M3 94v-0 Go to product viewer dialog for this item.

Once you have a proper part number or device model, use the following resources:

When a card with an APCB M3 94V-0 PCB fails, a schematic is the first line of defense. Dell Nvidia Quadro APCB M3 94V-0 | eBay | Typical Application | | :--- | :---

Because APCB manufactures blank boards for hundreds of different electronic companies, a dozen completely different devices might all use a board stamped with "APCB M3 94V-0."

Once you have the device brand and model, broaden your search. Look for any other numbers printed on the circuit board itself. These are far more valuable than "APCB M3 94V-0". The most important are:

The schematic outlines step-down ICs that manage voltages like 5V, 3.3V, 1.8V, and sub-1V domains.

If you are working on repairing or analyzing a motherboard, you might encounter the marking "APCB M3 94V-0" printed directly onto the green solder mask. For technicians, engineers, and electronics enthusiasts, this code is the starting point for diagnosing power issues or component failures.

These utilities are no longer supported. Please use Connection.unwrap(...) to access Oracle-specific APIs.

The Oracle thin JDBC driver provides a non-standard API for creating temporary BLOBs and CLOBs that requires users to call methods on the raw, Oracle-specific Connection implementation. Advanced users might use the raw connection operations described above to access this functionality, but a convenience class is available in a separate jar file (c3p0-oracle-thin-extras-0.13.0.jar) for easier access to this functionality. Please see the API docs for com.mchange.v2.c3p0.dbms.OracleUtils for details.